taxonID	type	description	language	source
03A287B7FFB1FFD77520F949FE15FA85.taxon	description	(Figs 1 A; 2; 3)	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB1FFD77520F949FE15FA85.taxon	diagnosis	Dwarf shrubs with suborbicular leaves that are florally most similar to the linear-leaved twiner M. neocaledonica, sp. nov. but possessing longer pedicels (7 - 14 mm long vs 3 - 6 mm long in M. neocaledonica, sp. nov.), triangular corona lobes c. 1 mm long (vs ovate, 0.5 mm long in M. neocaledonica, sp. nov.), anther appendages 500 µm long, erect and parallel to the elongated-conical, rostrate style-head (vs 375 µm long, appressed to the broadly conical style-head in M. neocaledonica, sp. nov.).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB1FFD77520F949FE15FA85.taxon	materials_examined	TYPUS. — New Caledonia. Grande-Terre, North Prov., Kaala- Gomen, Mount Kaala, 164 ° 23 ’ 22 ” E, 20 ° 37 ’ 6 ” S, 920 m alt., in maquis among peridotites, 7. XII. 2005, fl., Y. Pillon, R. Barrière & F. Rigault 213 (holo-, P [P 05208158]!; iso-, NOU [NOU 009225]!). PARATYPI. — New Caledonia. Grande-Terre, North Prov.: Koumac / Kaala-Gomen limit, crest between Pic Pandop and Mount Kaala, 700 m alt., in degraded maquis vegetation on eroded laterites, 14. XI. 2005, G. Dagostini, F. Rigault & R. Barrière 1088 (NOU 020355); Kaala-Gomen, top of Mount Kaala, 21. VI. 1966, A. Nothis 200 (NOU 017720).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB1FFD77520F949FE15FA85.taxon	etymology	ETYMOLOGY. — Marsdenia kaalaensis, sp. nov. is named after the massif of Kaala, where it grows and of which it is a micro-endemic or a narrow endemic species restricted to one location (NES 1) according to the definition of Wulff et al. (2013).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB1FFD77520F949FE15FA85.taxon	distribution	DISTRIBUTION AND HABITAT. — New Caledonia. Grande-Terre, North Prov., Kaala-Gomen and Koumac, Mont Kaala (Fig. 3). The species is strictly confined to more or less degraded maquis vegetation on lateritic soils or between peridotites blocks and grows between 700 and 1000 m altitude.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB1FFD77520F949FE15FA85.taxon	conservation	CONSERVATION STATUS. — So far, the only known locality of this new species is on the top of the Kaala massif in the northwest of the main island of New Caledonia. The Kaala massif is especially rich in endemic plant species of different plant families with seven micro-endemic species reported to occur only there (Wulff et al. 2013). Mount Kaala is not a protected area and is facing a major impact from nickel mining activity especially the top of the mountain where this new species occurs. The whole predicted area suitable for the ecology (Mount Kaala between 700 and 1000 m altitude) of M. kaalaensis, sp. nov. is under mining concession belonging to two different mining companies. At the moment, M. kaalaensis, sp. nov. is only reported from the middle part of the Kaala, and there from the crest south of Piton de Pandop for the northern population and around the Kaala peak for the southern population; the whole area belonging to Société des Mines de Tontouta concessions. Thus, it is considered as a single location (sensu IUCN) with an EOO and an AAO of 4 km 2. The species is uncommon in the locality (cf. Pillon et al. 213) and a whole day search in the three previously reported places by three people did not locate it again on 27 April 2016. Marsdenia kaalaensis, sp. nov. is assigned a preliminary IUCN conservation status of “ Critically endangered ” [CR B 1 ab (ii, iii, v) + 2 ab (ii, iii, v)] using Red List criteria (IUCN 2012).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB1FFD77520F949FE15FA85.taxon	description	DESCRIPTION Plants Compact, erect shrubs to 30 cm high, non-twining, branched, often trailing. Shoots Perennial, woody, with scattered trichomes when young; internodes 5 - 15 mm long, 1.5 - 3 mm diam. Latex Colour unknown. Leaves With petiole 10 - 30 mm long, spreading to ascending, pedicels 2 - 5 mm long, canaliculate above, with scattered trichomes when young, leaf blades without basal colleters, plain, stiff and coriaceous, 8 - 25 mm long, 7 - 17 mm wide, (broadly elliptic-) suborbicular, basally rounded, apically rounded but usually mucronate, glabrous, discolorous, adaxially dark green, abaxially bright green, with protruding rachis. Inflorescences Always one per node, extra-axillary, subsessile to shortly pedunculate, 2 - many-flowered, sciadioidal, flowers open synchronously and in succession. Peduncles 0 - 1.5 mm long, persistent, glabrous or nearly so. Flowers Floral bracts broadly elliptic, less than 1 mm long, scattered hirsute (ciliate). Pedicels 7 - 14 mm long, glabrous or nearly so, bright green, occasionally spotted dark red. Flower buds c. 2 × 2 mm when mature, ovoid-globose. Calyx Free-lobed, glabrous, sepals c. 1.5 mm long, 1 mm wide, ovate, apically obtuse. Corolla Rotate-campanulate, 3 - 4 mm long, abaxially yellowish, adaxially bright yellow (occasionally with purple zones), glabrous; lobes fused for about a quarter of total corolla length, 1.5 - 2 mm long, 1.3 - 1.5 mm wide, horizontal to ascending, oblong, apically obtuse. Gynostegial corona of staminal lobes (Cs) Basally fused to each other to form a ring-like structure, yellowish, glabrous, c. 1 mm high, 1.5 mm diam., shorter than the gynostegium; staminal corona lobes spreading to erect, c. 0.7 mm long, 0.6 mm wide at base, solid, deltoid, adaxially with a central depression, with thickened, recurved margins and recurved tips. Gynostegium c. 1.5 mm high, 1 mm diam., elevated by a very short column; anthers twice as high as broad, c. 1.5 mm long, rectangular; anther wings c. 300 µm long, extending along two thirds of anther length, consisting of distal ridge alone; adjacent anther wings parallel to each other in upper half, spreading in lower; connective appendages foliaceous, erect, c. 500 µm long, 400 µm wide, rectangular, shortly tipped. Pollinarium Corpusculum c. 200 µm long, 65 µm broad, elliptic; caudicles c. 60 µm long, cylindrical, with a s-shaped bent, basally inserted at the corpusculum; pollinia basally attached to the caudicles, erect, c. 300 µm long, 90 µm wide, ovate in crosssection, oblongoid. Style-head c. 0.7 mm long, 0.6 mm diam., elongated-conical, rostrate, rostrum 0.3 - 0.4 mm long. Fruits and Seeds Not seen.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB1FFD77520F949FE15FA85.taxon	discussion	REMARKS The new species makes an unusual sight, not only for Marsdenia in New Caledonia, with its low but compact shrubby habit and the condensed foliage of suborbicular, stiff and spreading leaves. In contrast, the flowers of Marsdenia kaalaensis, sp. nov. are not very spectacular except for their long pedicels that can reach 14 mm and surpass in length all New Caledonian Marsdenia species. A corona that is basally fused to form a ring-like structure spanning the interstaminal positions is found in other species as well (e. g. M. neocaledonica, sp. nov., M. tylophoroides) and elongate-conical and rostrate style-heads are also not unique (M. lyonsioides, M. speciosa). However, the conspicuously erect and foliaceous anther appendages are diagnostic for M. kaalaensis, sp. nov. alone. With regard to Asclepiadoideae, two other Marsdenia species are known from this locality, namely the frequent M. microstoma Schltr., and M. oubatchensis Schltr.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB5FFD57722FA4AFCE7F803.taxon	description	(Fig. 4)	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB5FFD57722FA4AFCE7F803.taxon	diagnosis	A slender vine with linear to slenderly elliptic, discolorous leaves as in M. microstoma but with cymose (bostrychoid) inflorescences with persistent rachis elongating with age (vs sciadioidal inflorescences in M. microstoma), ascending-erect connective appendages (vs inwardly bent in M. microstoma), and a significantly conical style-head (vs depressed-conical style head in M. microstoma).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB5FFD57722FA4AFCE7F803.taxon	materials_examined	TYPUS. — New Caledonia. Grande-Terre, South Prov., Yaté, Gouemba, 500 m, in maquis on serpentine soil, 22. III. 1981, H. S. MacKee 38863 (holo-, P [P 00607333]!; iso-, P [P 00607334]). PARATYPI. — New Caledonia. Grande-Terre: Road to Mt. Dzumac, N of Dumbéa, 8. I. 2004, P. P. Lowry et al. 6332 (NOU 050203); La Coulée, 10 m, 13. VI. 1971, H. S. MacKee 23841 (P 04222323); Kouaoua / Canala, Dahi, 500 m, 30. III. 1977, H. S. MacKee 32981 (P); Yaté, Haute rivière blanche, 450 m, 4. V. 1981, H. S. MacKee 39024 (NOU 017827; P 04222319); Yaté, 100 m, 22. XI. 1985, H. S. Mackee 42925 (NOU 057812, P 04593769); Plaine des lacs region, E of Grand Lac, along road to Haute Kuébini, 3 km along Kuébini rd, c. 300 m, 4. XI. 1982, G. McPherson 5050 (MO, NOU 017828, P 04222320); s. loc., 1861 - 1867, E. Vieillard (leg. Pancher) 3004 (P 04222321); Mont Dore-Dumbéa, Montagne des Sources, 22. VIII. 1968, G. L. Webster & R. Hildreth 14950 (P 04222322). Possibly also: Yaté, 100 m, 17. V. 1992, H. S. Mackee 45818 (P 04593759), sterile.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB5FFD57722FA4AFCE7F803.taxon	etymology	ETYMOLOGY. — Named after Hugh S. MacKee (1912 - 1995) and his wife Margaret E. MacKee (? 1913 - 1990). Hugh S. MacKee was supposedly the biggest and best collector in New Caledonia ever. His wife was always helping him in collecting and preparing the samples (Morat 1995, 2010).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB5FFD57722FA4AFCE7F803.taxon	distribution	DISTRIBUTION AND HABITAT. — New Caledonia. Grande-Terre, North and South Provinces (Fig. 3). On serpentine, in moist forests or maquis, 10 - 700 m. Marsdenia mackeeorum, sp. nov. is typically found on ultramafic derived soils (serpentinite) in the southernmost part of Grande-Terre.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB5FFD57722FA4AFCE7F803.taxon	conservation	CONSERVATION STATUS. — Most of the locations are in the southernmost part of Grande-Terre south of Mt. Dzumac with one locality outside this range, between Canala and Kouaoua. All localities are on ultramafic substrate with some of them under mining concessions and some others not. Bush fires could also be a threat to the populations occurring in maquis vegetation. With more than five localities, an EOO of 1950 km ² and an AAO of 32 km ², we are assigning a preliminary IUCN conservation status of “ Vulnerable ” [VU B 1 ab (ii, iii, v) + 2 ab (ii, iii, v)] using Red List criteria (IUCN, 2012).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB5FFD57722FA4AFCE7F803.taxon	description	DESCRIPTION Plants Ascending, twining to 3 m high. Shoots Perennial, herbaceous, glabrous. Latex White (fide MacKee 38863, 39024). Leaves With petiole 5 - 10 mm long, leaf blades coriaceous, with 3 - 5 colleters at the base, discolorous, 5 - 13 × 0.7 - 0.9 cm wide, linear to narrowly elliptic, basally rounded, apically acute, marginally revolute, glabrous on both sides. Inflorescences Always one per node, extra-axillary, bostrychoid, partial inflorescences geminiflorous, 12 - 25 - flowered, 3 - 9 flowers open synchronously. Peduncles 5 - 7 mm long, glabrous; rachis 8 - 12 mm long, persistent, straight. Flowers With floral bracts c. 0.7 mm long, c. 0.5 mm wide at the base, triangular, glabrous or apically ciliate. Pedicels 4 - 7 mm long, with a single line of appressed, c. 150 µm long trichomes. Flower buds 2.5 - 3 × 1.5 - 2 mm when mature, conical. Calyx Entirely free, glabrous; lobes 0.6 - 0.8 × 1 - 1.2 mm, ovate, apically obtuse. Corolla Urceolate, 3 - 4 mm long, c. 2.5 mm diam., whitish, yellow or rose, adaxially with 350 - 450 µm long trichomes, concentrated on the throat of the tube; lobes fused for about half of total corolla length, c. 1 mm wide, incurved, triangular, apically acute. Gynostegial corona of free staminal lobes Glabrous, 0.6 - 0.8 mm long, shorter than the gynostegium; lobes laminar, triangular. Gynostegium 1.2 - 1.4 mm long, 1.4 - 1.5 mm diam., elevated by a column of 0.5 - 0.7 mm length; anthers about as long as broad, rectangular, abaxially planar; anther wings 400 - 500 µm long, divergent, extending along the whole length of the anther, consisting of distal ridge alone; anther wings of adjacent anthers parallel to each other, basally widened, in the same plane as the anther; connective appendages 450 - 500 × 300 - 350 µm, triangular, narrower than the stamen, slightly inflexed. Pollinarium Corpusculum 380 - 400 × c. 100 µm, ovoid to elliptic, margins of the corpuscular cleft centrally widened; caudicles 80 - 100 µm long, (sub-) basally inserted at the corpusculum, cylindrical, straight, horizontal; pollinia apically attached to the caudicles, erect, c. 250 × 140 - 150 µm, round in cross-section, ovoid. Style-head 0.7 - 0.8 mm long, c. 0.8 mm diam.; upper part c. 0.6 mm long, longer than the lower part, conical. Follicles Always one per flower, c. 60 × 12 mm, obclavate, round in cross-section, apically shortly beaked, wingless, dark brown, longitudinally grooved, glabrous. Seeds 6 - 7 × 3.5 - 4 mm, ovate, dark brown; smooth on both sides, marginally with c. 0.3 mm wide wing with entire margin; coma c. 15 mm long.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB5FFD57722FA4AFCE7F803.taxon	discussion	REMARKS Herbarium material of this species has been previously identified as Marsdenia oubatchensis (syn. M. pseudoparsonsia Guillaumin) or M. microstoma. the linear-leaved M. mackeeorum, sp. nov. cannot be mistaken for the elliptical-ovate-leaved M. oubatchensis despite sharing very similar ovate-urceolate flowers. Vegetatively, the new species hardly differs from M. microstoma, from which it is distinguished by the bostrychoid inflorescences with a rachis that continues growth and flowering for long, whereas M. microstoma has sciadioidal inflorescences with all the flowers opening synchronously. In addition, long-ascending connective appendages, a conical style-head (broadly conical and depressed in M. microstoma) and smaller caudicles make it possible to recognize this species.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB7FFDB7549FF2FFC00FBC6.taxon	description	(Figs 1 B, C; 5)	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB7FFDB7549FF2FFC00FBC6.taxon	diagnosis	Similar to M. microstoma but differing in being erect to occasionally twining, sarmentose shrubs with densely and mostly distichously arranged, short, linear leaves, and campanulate flowers that do not exceed 3 mm in length.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB7FFDB7549FF2FFC00FBC6.taxon	materials_examined	TYPUS. — New Caledonia. Grande-Terre, North Prov., Koumac, Siounda, 200 m alt., in maquis on serpentine soil, 22. IV. 1967, M. S. MacKee 16662 (holo-, P [P 00607336]!). PARATYPI. — New Caledonia. Grande-Terre, North Prov.: Kafeate, 12. XII. 1950, M. Baumann-Bodenheim 9623 (P 04258708, Z 000052709); Pindai, 14. V. 1992, T. Jaffré 3156 (NOU 017801, P 04237233); Vallée de la Koumac, 30 m, 19. IV. 1967, H. S. MacKee 16598 (P 04237234); Baaba, Pointe Sud-ouest, 5 - 20 m, 6. I. 1971, H. S. MacKee 23212 (P 04237231); Poum, Anse de Pouani, 5 m, 17. II. 1971, H. S. MacKee 23336 (NOU 057837, P 04237232); Koné, Pinjen, 50 m, 25. IV. 1971, H. S. MacKee 23654 (P 04237228); Gomen, Cap Deverd, 20 m, 10. IV. 1975, H. S. MacKee 30019 (NOU 057777, P 04237229); Plaine des Gaiacs, 20 m, 12. VIII. 1977, H. S. MacKee 33588 (NOU 017800, P 04237230); Koumac, Siounda, 200 m, 13. V. 1978, H. S. MacKee 35147 (NOU 017802, P 04237225); Néhoué, Babouillat, 5 m, 9. V. 1979, H. S. MacKee 36861 (NOU 017819, P 04237226); Koumac, Tangadiou, 50 m, 9. V. 1979, H. S. MacKee 36874 (P 04237227); Voh, Katepaik mountain, 4. IV. 2016, G. Gâteblé 760 (NOU); Ouaco, Néchoua, 100 m, 18. V. 1981, H. S. MacKee 39095 (NOU 017818, P 04237224); Montagnes de Gomonen près Gatope, 1861 - 1867, E. Vieillard 2999 (P 04237221, P 04237222, P 04237223) and E. Vieillard 3000 (P 04237219, P 04237220). The following sterile specimens probably also belong to M. neocaledonica, sp. nov.: Siouda, 20. I. 2004, G. Dagostini 754, (NOU 001304, P 04526643); Poum, 13. XI. 1990, I. H. Müller 186 (P 04564507); Pagoumene, VIII. 1967, A. Nothis 564 (P 04593762).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB7FFDB7549FF2FFC00FBC6.taxon	etymology	ETYMOLOGY. — While so many species of Marsdenia are endemic to New Caledonia, none has previously been named after the archipelago, where the new species is only found in the northwest of Grande-Terre.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB7FFDB7549FF2FFC00FBC6.taxon	distribution	DISTRIBUTION AND HABITAT. — New Caledonia. Grande-Terre northwest and Baaba island, North Prov. (Fig. 3). On serpentine sites at the base of northwest ultramafic massifs or on serpentine veins in maquis close to the coast, receiving comparatively little precipitation (800 - 1200 mm / p. a.); 5 - 200 m altitude.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB7FFDB7549FF2FFC00FBC6.taxon	conservation	CONSERVATION STATUS. — This species has a northwest pattern of distribution at low altitudes on serpentine soils between Plaine des Gaiacs in the south and Baaba island in the north. There is no or very little nickel mining in these places and bush fires are the main issue for conservation of plants in those localities. With about ten localities, an EOO of 1075 km ² and an AOO of 44 km ², we are assigning a preliminary IUCN conservation status of “ Near Threatened ” using Red List criteria (IUCN 2012).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB7FFDB7549FF2FFC00FBC6.taxon	description	DESCRIPTION Plants Erect to ascending shrubs, self-supporting or twining, 50 - 70 cm high, sarmentose, runners warty. Shoots Perennial, herbaceous, basally slightly corky, sparsely covered with appressed, 180 - 200 µm long trichomes, glabrescent; internodes 5 - 15 mm long, 1 - 2 mm diam. Latex Colourless, sparse. Leaves With petiole 2 - 5 mm long, densely and mostly distichously arranged, leaf blades coriaceous, with 2 colleters at the base, discolorous, 20 - 40 mm long (leaves supporting lateral shoots to 120 mm), 4 - 8 mm wide, elliptic, basally rounded, apically obtuse and mucronate, marginally revolute, adaxially and abaxially glabrous. Inflorescences Always one per node, growth continued beyond inflorescence, 3 - 7 (- 15) - flowered, all flowers open synchronously, sciadioidal. Peduncles 3 - 6 mm long, with sparse appressed trichomes, 180 - 200 µm long. Flowers With floral bracts c. 0.3 mm long, 0.2 mm wide at the base, ovate, with scattered trichomes. Pedicels 3 - 6 mm long, sparsely covered over the whole surface with flexuous trichomes, 180 - 200 µm long. Flower buds 20 × 15 mm when mature, conical. Calyx Entirely free, ciliate; lobes 0.6 - 0.8 mm long, c. 0.5 mm wide, ovate, apically acute. Corolla 2 - 2.5 mm long, c. 4 mm diam., campanulate-rotate, abaxially yellow to purple, adaxially yellow, adaxially with 100 - 150 µm long trichomes concentrated on the tube and on the lateral parts of the lobes; lobes fused for about a third of total corolla length, 1 - 1.5 mm wide, patent, ovate, apically acute. Gynostegial corona of free staminal lobes Glabrous, 0.5 - 0.7 mm long, shorter than the gynostegium; lobes laminar, ovate, marginally thickened, apically recurved. Gynostegium 0.9 - 1 mm long, 0.9 - 1 mm diam., elevated by a column of 350 - 400 µm length; anthers broader than long, rectangular, abaxially planar; anther wings 300 - 350 µm long, extending along the whole length of the anther; anther wings of adjacent anthers parallel to each other, in the same plane as the anther; connective appendages 375 - 400 × 300 - 350 µm, triangular, narrower than the stamen, slightly inflexed. Pollinarium Corpusculum c. 220 µm long, more than twice as long as broad, elliptic, margins of the corpuscular cleft sinuate; caudicles 70 - 100 µm long, (sub-) basally inserted at the corpusculum, cylindrical, s-shaped, concave-convex, not thickened at the insertion of the pollinium; pollinia apically attached to the caudicles, erect, 250 - 270 × 60 - 80 µm, ovate in cross-section, oblongoid. Style-head 0.5 - 0.7 mm long, 0.5 - 0.6 mm diam., forming a nose at the upper end of the corpusculum; upper part 0.4 - 0.5 mm long, longer than the lower part, conical. Follicles Always one per flower, 30 - 40 × 6 - 8 mm, obclavate, round in cross-section, acute, apically strongly beaked, wingless, medium brown, longitudinally grooved (when dry), glabrous, endocarp shining. Seeds 6 - 6.5 × 3 - 3.5 mm, ovate, medium brown; seta and aseta side smooth, marginally with 0.5 - 0.6 mm wide wing with entire margin; coma 15 - 20 mm long.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB7FFDB7549FF2FFC00FBC6.taxon	discussion	REMARKS Vegetatively with the linear leaves and florally with details such as gynostegium, corona and pollinarium structure a close relationship between M. neocaledonica, sp. nov. and M. mackeeorum, sp. nov. and M. microstoma is indicated. However, with 4 cm as maximum length, the leaves are shortest in M. neocaledonica, always surpassed in length in the other two species. The epithet “ microstoma ” indicates that the corolla of M. microstoma is urceolate (urn-shaped) and fused for more than half of its length, similar to the ovoid-urceolate corolla in M. mackeeorum, sp. nov. The corolla of M. neocaledonica, sp. nov., however, is open and subcampanulate with the lobes fused for around one third of total corolla length. Finally, the corona of M. neocaledonica, sp. nov. is expanded to include interstaminal portions as well, a character missing in the other two species.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB9FFD97558FB8BFB64F804.taxon	description	(Fig. 1 D, E; 6)	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB9FFD97558FB8BFB64F804.taxon	diagnosis	Similar to Marsdenia tylophoroides, but latex white, corolla yellow and suburceolate with spreading to reflexed, ciliate, basally pilose to bearded lobes; style-head elongated conical, much exserted from the corolla tube, often bilobed. Outside New Caledonia most similar to the Australian M. rostrata, but with branching, bostrychoid inflorescences and a yellow suburceolate corolla with ovate lobes only basally pilose to bearded.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB9FFD97558FB8BFB64F804.taxon	materials_examined	TYPUS. — New Caledonia. Grande-Terre, South Prov., Montagne des Sources, c. 20 air-km NE of Nouméa, bushy slopes, 500 - 600 m, 19. II. 1980, G. McPherson 2451 (holo-, P [P 00607338]!; iso-, MO).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB9FFD97558FB8BFB64F804.taxon	etymology	ETYMOLOGY. — This new species is named after Paul I. Forster, Australian botanist, and a taxonomist / curator at the Queensland Herbarium (BRI). Forster revised the genus Marsdenia for Australia and Papuasia (Forster 1995 b); he is author of many Marsdenia taxa.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB9FFD97558FB8BFB64F804.taxon	distribution	DISTRIBUTION AND HABITAT. — New Caledonia. Grande-Terre, South Prov. (Fig. 3). On ultramafic substrate, in rainforests and maquis of the southernmost part of Grande Terre; 50 - 800 m.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB9FFD97558FB8BFB64F804.taxon	conservation	CONSERVATION STATUS. — This new species is distributed in maquis and rainforests in the south part of the main island. There are about ten different localities sensu IUCN with at least three that are in protected areas. The species is not particularly threatened by nickel mining and the main threats could be bush fires especially for the low altitude populations growing in maquis. With an EOO of 1900 km 2 and an AAO of 52 km 2, we are assigning a preliminary IUCN conservation status of “ Least Concern ”.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB9FFD97558FB8BFB64F804.taxon	materials_examined	PARATYPI. — New Caledonia. South Prov., la Couvélée, 1. V. 1951, M. G. Baumann-Bodenheim 13053 (P 04237188, Z 000052731); Thy, Upper Western Extension, 14. I. 1981, H. Brinon 1108 (NOU 057806); Montagne des Sources, 11. II. 1983, E. Cayrol 50 (NOU 057859, P 04593777); Monts Dzumac, 166 ° 27 ’ 51.9 ’’ E, 22 ° 01 ’ 00.9 ’ S, 800 m, 26. I. 2010, G. Gâteblé 337 (NOU 083601); To’Ndeu (Thio) (Plante cultivée en pépiniére à SRA St. Louis, Mont Dore), 15. I. 2015, G. Karnadi 231 (NOU 052046, IACNC 000975); near site of old sawmill on road to Montagne des Sources, 650 m, 13. II. 1955, M. MacKee 2089 (P 04237186); route de la Montagne des Sources, 600 m, 28. I. 1956, M. MacKee 3856 (P 04237187); sentier du Mt. Dzumac, environs du 1 er col, c. 600 m, 23. XII. 1962, H. S. MacKee 9823 (P 04237183; NOU 057809); sentier du Mt. Dzumac, au dessus de la Couvélée, 500 m, 23. II. 1967, H. S. MacKee 16458 (P 04237184); c. 12 air-km NE of Nouméa; Thy river valley, c. 300 m, 15. II. 1980, G. McPherson 2432 (MO, P 04237185); Mt Dzumac, c. 600 m, 23. II. 1967, J. M. Veillon 1051 (NOU 0057811, P 04593763); Mt Dzumac, c. 800 m, 30. III. 1978, J. M. Veillon 3552 (P 04593755); Montagne des Sources, c. 800 m, III. 1981, J. M. Veillon 4430 (P 04593768, P 04593773; NOU 057805); Piste du Dzumac, 600 m, 11. II. 1988, J. M. Veillon 6690 (NOU 057808, P 04593782); “ Wagap ”, 1861 - 1867, E. Vieillard 3003 (P 04237181); environs de l’ancien campement Pages, vallée de la rivière du Humboldt, c. 130 m, 9. XII. 1940, R. Virot 357 (P 04237182); Route de Yaté, vallée de la Numbée, c. 50 m, 25. XII. 1945, R. Virot 1556 (P 04237179, P 04237180).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB9FFD97558FB8BFB64F804.taxon	description	DESCRIPTION Plants Ascending, twining, to 3 m high. Shoots Perennial, herbaceous, glabrous; internodes 10 - 13 cm long, 2 - 2.5 mm diam. Latex White (fide Mackee 16458 [P 04237184]). Leaves With petiole 15 - 40 mm long, leaf blades coriaceous, with 5 - 13 colleters at the base, 50 - 120 × 20 - 55 mm, elliptic to ovate, basally rounded to indistinctly cordate, apically acute to acuminate with acumen 5 - 10 mm long, glabrous on both sides. Inflorescences Always one per node, extra-axillary, 9 - 30 - flowered (and more), long-lasting, 3 - 15 flowers open synchronously, basally dichasially branching, apically bostrychoid. Peduncles 10 - 40 mm long, glabrous; rachis 1 - 20 mm long, straight. Flowers With floral bracts 0.2 mm long, 0.3 mm wide at the base, deltoid, glabrous. Pedicels 5 - 10 mm long, glabrous. Flower buds 4 - 5 × 2 - 3 mm when mature, conical. Calyx Entirely free, ciliate; lobes 2 - 3 × 1.5 - 3 mm, ovate, apically obtuse. Corolla Suburceolate, 4 - 6 mm long, abaxially greenish yellow, adaxially yellow, adaxially pilose to bearded with 150 - 250 µm long trichomes, forming a ring on the throat; lobes fused for about half of total corolla length, 1.5 - 3 mm wide, patent to decurved, ovate, apically obtuse to acute, adaxially basally pilose to bearded, marginally ciliate. Gynostegial corona of free staminal lobes Glabrous, 0.5 mm high, shorter than the gynostegium; lobes laminar, broadly oblong. Gynostegium 2.5 - 3.2 mm long, 1.4 - 1.7 mm diam., elevated by a column of 200 - 800 µm length; anthers about as long as broad, rectangular, abaxially planar, forming a basal arch; anther wings 600 - 800 µm long, extending along the whole length of the anther, consisting of distal and proximal ridge; anther wings of adjacent anthers parallel to each other, in the same plane as the anther; connective appendages c. 800 × 500 µm, ovate, equalling the stamen in width, slightly inflexed. Pollinarium Corpusculum c. 200 µm long, between 1.5 times and twice as long as broad, ovoid, margins of the corpuscular cleft centrally widened; caudicles c. 150 µm long, (sub-) basally inserted at the corpusculum, cylindrical, concavely recurved to straight, horizontal; pollinia subapically attached to the caudicles, erect, 250 - 300 µm long, 130 - 140 µm wide, ovate in cross-section, ovoid to oblongoid. Style-head 1.8 - 2.5 mm long, 0.7 - 0.8 mm diam., invertedly infundibuliform, exserted from the corolla tube for around 1.5 mm, rostrate, rostrum elongated conical, 1.5 - 2.2 mm long, usually bifurcate. Follicles Always one per flower, c. 80 × 10 - 15 mm diam., obclavate, round in cross-section, apically obtuse, not beaked, wingless, grey, longitudinally grooved (when dry), glabrous, with thick pericarp.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFB9FFD97558FB8BFB64F804.taxon	discussion	REMARKS A vigorous and multi-flowered climber with large (up to 12 cm long) elliptic to ovate leaves and long-lasting inflorescence axes. Very characteristic are the yellow, spreading to reflexed corolla lobes exposing the unusually long, rostrate style-head much exserted from the corolla tube (Fig. 1 E). With such a rostrum M. paulforsteri, sp. nov. shares an important character with the Australian Marsdenia rostrata R. Br. Other similarities concern the vegetative habit, size of flowers and apex of pollinia that points towards the corpusculum (Fig. 6 E; cf. Forster 1995 b: fig. 33). However, M. rostrata can be clearly distinguished from M. paulforsteri, sp. nov. by its sciadioidal inflorescences and campanulate flowers with mostly creamish corolla and lanceolate-ovate corolla lobes that are densely pilose all over.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBDFFDC768EFF2FFEA8FDD9.taxon	description	(Fig. 7)	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBDFFDC768EFF2FFEA8FDD9.taxon	diagnosis	A twining herb with ovate, coriacous and discolorous leaves indistinguishable from M. nigriflora by vegetative characters, but otherwise unique within New Caledonian Marsdenia species because of its radiate flowers of around 12 mm diam. with adaxially glabrous corolla lobes, bipartite staminal corona lobes differentiated into a swollen, transversally ovate base and a lingulate apical part. The style-head is subconical and slightly papillate, and thus very similar to the one of M. nigriflora.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBDFFDC768EFF2FFEA8FDD9.taxon	materials_examined	TYPUS. — New Caledonia. Grande-Terre, North Prov., Hô (Houaïlou), reste de forêt sur terrain serpentineux altéré, 50 m, 29. IV. 1973, H. S. MacKee 26650 (holo-, P [P 00607351]!; iso-, P [P 00607352]!).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBDFFDC768EFF2FFEA8FDD9.taxon	etymology	ETYMOLOGY. — Named after the late Prof. Focko Weberling (University of Ulm, Germany), well-known morphologist and inflorescence specialist. Weberling, highly respected teacher and mentor of S. Liede-Schumann, would have celebrated his 90 th birthday in March 2016.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBDFFDC768EFF2FFEA8FDD9.taxon	distribution	DISTRIBUTION AND HABITAT. — New Caledonia. Grande-Terre, North Prov. Known only from the type collection (Fig. 3). Margins of disturbed rainforest on serpentine; 50 m.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBDFFDC768EFF2FFEA8FDD9.taxon	conservation	CONSERVATION STATUS. — So far, the only known locality of this new species is at Hô, just north of Houaïlou. The col de Hô region and the Cap Bocage peninsula are renowned for several rare species despite a general lack of botanical knowledge for the area. As a whole this region could be considered as an “ ultramafic island ”. Most of the area is under nickel mining concession and the Cap Bocage peninsula is under active mining. The other main threat in this region are the severe bush fires that frequently occur. The North Province “ Nature Guard ” Philippe Nekotrotro has recently surveyed the type locality for this species without success. Considering that the remnants of rainforest pockets in the area are under fire and mining pressure, M. weberlingiana Liede, sp. nov. is assigned a preliminary IUCN conservation status of “ Critically endangered ” [CR B 1 ab (i, ii, iii, v) + 2 ab (i, ii, iii, v)] using Red List criteria (IUCN, 2012) if not Extinct.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBDFFDC768EFF2FFEA8FDD9.taxon	description	DESCRIPTION Plants Ascending, twining. Shoots Perennial, herbaceous, glabrescent, sparsely covered with appressed trichomes, 250 - 300 µm long; internodes 6 - 10 cm long, 2 - 2.5 mm diam. Latex Colorless fide MacKee 26650. Leaves with petiole 10 - 15 mm long, leaf blades coriaceous, with 2 - 4 colleters at the base, 70 - 100 × 30 - 45 mm, elliptic, basally rounded, apically acuminate with acumen 4 - 7 mm long, discolourous, glabrous on both sides. Inflorescences Always one per node, extra-axillary, 5 - 12 - flowered, all flowers open synchronously, sciadioidal. Peduncles 12 - 15 mm long, sparsely covered over the whole surface with appressed, 250 - 300 µm long trichomes. Flowers With floral bracts 1 mm long, 0.6 mm wide at the base, ovate, with scattered trichomes. Pedicels 10 - 15 mm long, sparsely covered over the whole surface with appressed trichomes, 150 - 200 µm long. Flower buds 7 × 4 mm when mature, ovoid. Calyx Fused for almost half of its length, campanulate, ciliate; lobes 2.5 × 1.5 mm, ovate, apically obtuse. Corolla Rotate, 6 mm long, abaxially green, adaxially brown to purple; lobes basally fused, 2.5 - 3 mm wide, horizontal, oblong, apically obtuse, marginally ciliate. Gynostegial corona of free staminal lobes Purplish-red, glabrous, 1.4 - 1.5 mm long, equalling to or longer than the gynostegium; lobes solid, massive, basally oblongoid, apically subulate, extended into a long, slender tip. Gynostegium c. 1.5 mm long, 0.7 mm diam., sessile. Stamens without filament; anthers broader than long, trapezoidal, abaxially planar; anther wings 450 µm long, extending along the whole length of the anther, consisting of distal ridge alone; anther wings of adjacent anthers parallel to each other, in the same plane as the anther; connective appendages c. 700 × 700 µm, triangular, equalling the stamen in width, strongly inflexed. Pollinarium Corpusculum c. 500 µm long, more than twice as long as broad, elliptic, margins of the corpuscular cleft parallel; caudicles c. 625 µm long, (sub-) basally inserted at the corpusculum, cylindrical, s-shaped, convex-concave, not thickened at the insertion of the pollinium; pollinia apically attached to the caudicles, erect, c. 450 × 200 µm, ovate in cross-section, ovoid. Style-head Slightly papillose, c. 0.5 mm long, c. 1 mm diam.; upper part c. 0.25 mm long, equalling the lower part, depressed-conical. Fruits and seeds Unknown.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBDFFDC768EFF2FFEA8FDD9.taxon	discussion	REMARKS The generic placement of this new species left some questions due to its unusual character combination. Unfortunately, the condition of the herbarium specimens was not sufficient to extract DNA for molecular analysis, so that the relationships could not be tested molecularly. Originally thought to belong to Sarcolobus R. Br. (cf. labels on type specimens), because of geniculate caudicles and a papillate style-head surface (cf. Forster 1991), this element is nevertheless published under Marsdenia, here. Latex constitution supports this placement, as colorless and clear instead of the predominant milky latex is a feature not rarely found in Marsdenia (Forster 1995 b), especially in New Caledonian species (e. g. M. ericoides Schltr., M. koniamboensis Guillaumin). Colorless latex, in contrast, is not known to occur in Sarcolobus (cf. Forster 1991). Also, Marsdenia weberlingiana Liede, sp. nov. is not only indistinguishable from M. nigriflora Guillaumin with regard to vegetative characters, it shares a radiate corolla (but of 12 mm diam. versus 5 mm diam. in M. nigriflora), a more or less papillate style-head surface and similar pollinaria. However, pollinaria are larger in M. weberlingiana Liede, sp. nov. and with more distinctly geniculate caudicles. Geniculate caudicles, though fairly short ones, also occur in M. kaalaensis, sp. nov. (Fig. 2 E).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBEFFDD7751FD4DFE77FDB9.taxon	materials_examined	TYPUS. — New Caledonia. Grande-Terre, North Prov., Balade, 1861 - 1867, E. Vieillard 987 (holo-, P [P 00607353]!; iso-, P [P 04258524]!).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBEFFDD7751FD4DFE77FDB9.taxon	etymology	ETYMOLOGY. — This species is named after André Guillaumin (1885 - 1974), author of the Flore analytique et synoptique de la Nouvelle-Calédonie (Guillaumin 1948).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBEFFDD7751FD4DFE77FDB9.taxon	distribution	DISTRIBUTION AND HABITAT. — New Caledonia. Grande-Terre, North Prov.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBEFFDD7751FD4DFE77FDB9.taxon	conservation	CONSERVATION STATUS. — Known from the type collection over 150 years ago, only, and possibly extinct.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBEFFDD7751FD4DFE77FDB9.taxon	description	DESCRIPTION Plants Ascending, twining, 6 - 10 m tall. Shoots Perennial, herbaceous, glabrous; internodes 3.5 - 5 cm long, 1.5 - 2 mm diam. Leaves With 10 - 15 mm long petioles, blades with 4 colleters at the base, herbaceous to coriaceous, 3 - 4.5 × 2 - 2.8 cm, elliptic, basally rounded, apically obtuse or minutely mucronate, glabrous on both sides. Inflorescences Always one per node, extra-axillary, forming a basal dichasium bearing two sciadioids, 10 - 20 - flowered, all flowers open synchronously. Peduncles 10 - 15 mm long, glabrous. Flowers With pedicels 2 - 3 mm long, glabrous. Flower buds c. 1.5 × 1 mm when mature, globose. Calyx Entirely free; lobes c. 1 x. 0.7 mm, ovate, apically acute. Corolla Rotate-campanulate, 1.5 - 2 mm long, c. 2.5 mm diam., adaxially with to 200 µm long trichomes on apical and lateral parts of the lobes; lobes fused about half of total corolla length, 0.6 - 0.7 mm wide, patent, ovate, apically acute. Gynostegial corona of free staminal lobes Glabrous, c. 0.6 mm long, shorter than the gynostegium; lobes laminar, oblong. Gynostegium c. 0.7 mm long, c. 0.6 mm diam., elevated by a column of c. 200 µm length; anthers broader than long, rectangular, abaxially planar, forming a basal arch; anther wings c. 300 µm long, extending along the whole length of the anther; anther wings of adjacent anthers parallel to each other, in the same plane as the anther; connective appendages c. 400 × 300 µm, ovate, slightly inflexed. Pollinarium Corpusculum c. 140 × 55 µm, elliptic; caudicles c. 30 µm long, medianly inserted at the corpusculum, cylindrical, straight, horizontal; pollinia apically attached to the caudicles, erect, c. 200 × 50 µm, round in cross-section, oblongoid. Style-head c. 0.35 mm long, c. 0.6 mm diam.; upper part 0.1 mm long, shorter than the lower part, umbonate. Fruits and seeds Not seen.	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
03A287B7FFBEFFDD7751FD4DFE77FDB9.taxon	discussion	REMARKS Known only from the type. The very small flowers with their small pollinaria and the open, zig-zagging inflorescences at first point to Tylophora / Vincetoxicum as generic relationship of this rare species. However, repeated study of gynostegial structures showing: 1) a fringe-like corona also in interstaminal position; 2) prominent anther wings (as in Marsdenia neocaledonica, sp. nov., M. tylophoroides or M. variifolia); and 3) pollinaria with strictly erectly positioned, oblongoid pollinia, finally point to Marsdenia as only possible relationship for this element. This species and Tylophora anisotomoides Schltr. have been usually regarded as synonymous (cf. to http: // www. endemia. nc, https: // plants. jstor. org /). However, this is clearly incorrect as the protologue of T. anisotomoides gives glabrous corolla lobes, but Vieillard 987, the type and only original material of Tylophora micrantha, possesses trichomes on the adaxial side of the corolla lobes. In addition, Schlechter’s (1906) statement in the protologue of T. anisotomoides “ coronae foliolis tubo staminum basi alte adnatis carnosis, lanceolato-rhomboideis ” unambiguously refers to a character highly significant for Vincetoxicum biglandulosum but not for Tylophora micrantha where the corona lobes are neither basal nor rhomboid nor carnose. Schlechter (1906) also compared his new species with Tylophora tapeinogyne as being most similar – the latter is a long-established synonym of T. biglandulosa. Finally, all further non-type specimens in P labelled “ Tylophora anisotomoides ” are found to belong to small-flowered or sterile material of Vincetoxicum (Tylophora) biglandulosum (cf. https: // science. mnhn. fr / institution / mnhn / collection / p / item / search, last access on 3. XI. 2016).	en	Meve, Ulrich, Gâteblé, Gildas, Liede-Schumann, Sigrid (2017): Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia. Adansonia 39 (1): 55-70, DOI: 10.5252/a2017n1a5
