taxonID	type	description	language	source
3A6A87B1495AFFCAFF67872D3338FE11.taxon	materials_examined	Type: — AUSTRALIA. Victoria: Murray Sunset National Park, Mopoke, 44 m, 22 Oct 2019, Reiter 407 (holotype: MEL 2481870 A). Pterostylis jeanesii (Fig. 5, revised key to Vicflora Appendix 7) has similarities to P. exelsa but differs from that species by way of lacking a crest of small dense setae on the labellum mound, shorter scape 9 – 20 cm (versus 80 cm), 2 – 5 flowers (versus up to 20). Pterostylis jeanesii is similar to P. pedina but differs from this species in the following: wider lateral sepals, longer free points of the sepals, longer labellum, wider labellum, longer prominent setae, taller flower, taller basal mound and wider basal mound. Pterostylis jeansii corresponds to the following illustrations: Backhouse (2019: 358; as P. species ‘ Sunset Country’) and Jeanes & Backhouse (2006: 140; as P. sp. aff. excelsa). Deciduous terrestrial, solitary, tuberous herbs. Leaves sessile 2 – 10 in a rosette, imbricate, green, or withered at anthesis; lamina narrowly elliptical, margins entire, acute to acuminate to 2.0  1.1 cm. Scape 9 – 20 cm tall, 0.4 cm diam. Flowers 2 – 5, 2.0 – 4.0 cm tall, 1.0 – 2.1 cm thick. Sterile leafy bracts 2 – 5, ensheathing stem, lanceolate, acuminate, withered at flowering, 0.5 – 2.5 cm long. Floral bracts ovate-lanceolate, not overlapping at base of scape, clasping stem, apex acute to acuminate, 20 – 45  3 – 10 mm. Pedicels slender 2.1 – 2.9 cm long, enclosed within the floral bract. Ovaries narrowly cylindrical, 4.0 – 7.0  1.5 – 3.0 mm. Flowers porrect; galea bulbous, mostly glabrous or with few short bristles along the apical and lateral ridges, gibbous at base, shallowly curved throughout, narrowing to a filiform, decurved apical point, translucent white with predominantly green to brown stripes and markings; petals mostly translucent white with small green or brown suffusions, margins incurved with well-developed basal flanges, usually not touching; lateral sepals usually translucent white with brown or green outline and striping, free points usually brown occasionally green, basal half of lateral margins covered with prominent short, white bristles. Dorsal sepal cucullate, broadest near the base 1.0 – 2.1 cm long, tapering to an apical filiform, decurved point 0.2 – 1.0 cm long. Lateral sepals deflexed, narrow at base and conjoined in basal half, shallowly concave with thickened lateral margins, sparsely ciliate, conjoined part 7 – 11  5 – 12 mm; free points curved forward, filiform, 11 – 19 mm long, slightly spreading. Petals asymmetrical oblong-lancolate, falcate, 1.0 – 2.1  4.0 – 5.0 mm, dorsal margin prominently thickened, glaborus, anterior margin curved, glabrous, proximal flange brown prominent, apex acuminate. Labellum insectiform on a visible claw, articulate, highly sensitive to touch, nested between conjoined part of the lateral sepals when exposed and in set position; 4.8 – 5.7  1.2 – 2.1 mm, 0.3 – 0.4 mm deep, usually solid brown or green; laminar obovate to elliptical with basal lobe: 1.4 – 1.6 mm tall, 0.5 – 1.6  0.6 – 2.1 mm; distal margins with a series of spreading, short white setae, largest nearest the base, smaller towards apex, 0.4 – 2.7 mm long, with twin pairs of prominent long setae, 1.8 – 4.0 mm long on the labellum below the basal lobe. Column porrect, incurved, extending most of the length of the bulbous part of the galea, partly visible through translucent parts of the galea; column wings rectangular, distal margins covered in a series of fine, dense setae. Anther obtuse, green, c. 1.0 mm long. Pollinia linear, c. 1.0 – 1.5 mm long, yellow. Flowering: — October	en	Reiter, Noushka, Kosky, William, Clements, Mark (2021): Two new species of Pterostylis (Orchidaceae; Orchidoideae) from the Sunset Country, Victoria, Australia. Phytotaxa 500 (3): 153-165, DOI: 10.11646/phytotaxa.500.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.500.3.1
3A6A87B1495AFFCAFF67872D3338FE11.taxon	description	Habitat: — Red soils in a low-lying Casuarina pauper woodland with the following commonly occurring species: Casuarina cristata, Sclerolaena diacantha, Chenopodium ulicinum, Enchylaena tomentosa, Maireana brevifolia, Olearia pimeleoides, Atriplex vesicaria, Beyeria viscosa and Eremophila sp. At Borree Plains (NSW) the single herbarium specimen occurred in Casuarina pauper woodland. The Berook site is open Eucalyptus woodland.	en	Reiter, Noushka, Kosky, William, Clements, Mark (2021): Two new species of Pterostylis (Orchidaceae; Orchidoideae) from the Sunset Country, Victoria, Australia. Phytotaxa 500 (3): 153-165, DOI: 10.11646/phytotaxa.500.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.500.3.1
3A6A87B1495AFFCAFF67872D3338FE11.taxon	distribution	Distribution: — Herbarium specimens from four locations (Figure 1) between Murray Sunset National Park and Boree Plains in NSW. However, surveys in 2018 and 2019 only located this species at a single site within the Murray Sunset National Park, Victoria. Road works appear to have destroyed the plants at Berook, and no plants were found near Rocket Lake despite extensive surveys. The plants are likely to still be extant in Boree Plains NSW but were not seen in a survey by Kosky in 2019. Conservation status: — IUCN criteria CR C 2 ai (IUCN, 2012) for critically endangered with observed documented decline, less than 250 individuals known and less than 50 individuals in any known population. The remaining population in Victoria is in a national park.	en	Reiter, Noushka, Kosky, William, Clements, Mark (2021): Two new species of Pterostylis (Orchidaceae; Orchidoideae) from the Sunset Country, Victoria, Australia. Phytotaxa 500 (3): 153-165, DOI: 10.11646/phytotaxa.500.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.500.3.1
3A6A87B1495AFFCAFF67872D3338FE11.taxon	etymology	Etymology: — Named after the Victorian botanist Jeff Jeanes, who discovered the first specimens of this species and has made a significant contribution to the taxonomy of the Orchidaceae and other plant families. Additional specimens examined: — AUSTRALIA. Victoria: Murray Sunset National Park, Mopoke, 44 m, 24 Oct 2017, Reiter 218 (MEL 2467638 A); Murray Sunset National Park, Mopoke, 44 m, 22 Oct 2019, Reiter 406 (MEL 2481869 A); Murray Sunset National Park, Mopoke, 44 m, 22 Oct 2019, Reiter 408 (MEL 2481871 A); Murray Sunset National Park, Berrook, 52 m, 1 Oct 1991, Jeanes s. n (MEL 2154721); Murray Sunset National Park, Berrook, 52 m, 20 Oct 1992, Jeanes s. n (MEL 2154720 A); Murray Sunset National Park, Rocket Lake, 45 m, 22 Oct 1996, Fletcher 360 (MEL 2034851 A). New South Wales: Boree Plains Station, 108 m, 27 Oct 2016, Sluiter 16 (MEL 2387265).	en	Reiter, Noushka, Kosky, William, Clements, Mark (2021): Two new species of Pterostylis (Orchidaceae; Orchidoideae) from the Sunset Country, Victoria, Australia. Phytotaxa 500 (3): 153-165, DOI: 10.11646/phytotaxa.500.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.500.3.1
3A6A87B14954FFC9FF6787BB3249FE59.taxon	materials_examined	Type: — Australia. Victoria: Wyperfeld National Park, Brocken Bucket, 130 m, 9 Nov 2019, Reiter 425 (holotype: MEL 2481888 A). Pterostylis peakallana (Fig. 6, revised key to Vicflora Appendix 7) has affinities to P. exelsa but differs from that species in lacking a crest of small dense setae and a scape 18 – 58 cm tall (versus up to 80 cm) with 1 – 8 flowers (versus up to 20). Pterostylis peakallana is similar to P. terminalis but differs in labellum tip not upturned, wider lateral sepals and longer prominent setae. Pterostylis peakallana corresponds to the following illustrations: Backhouse (2019: 357; as P. species ‘ north west plains’); Backhouse et al. (2016: 714; as P. ‘ north west mallee’ - Yanac photos only). Deciduous terrestrial, solitary, tuberous herbs. Leaves sessile 2 – 10 in a rosette, imbricate, green, or withered at anthesis; lamina narrowly elliptical, margins entire, acute to acuminate, 0.5 – 3.5  0.5 – 1.0 cm. Scape 18 – 58 cm tall, 0.2 – 0.3 cm diam., generally 1 – 8 flowers, 3.0 – 4.5 cm tall, 2.0 – 2.5 cm thick. Sterile leafy bracts 4 – 7, ensheathing stem, lanceolate, acute, withered at flowering, 0.5 – 3.0 cm long. Floral bracts ovate-lanceolate, not overlapping at base of scape or at apex, clasping stem, apex acute, 2.0 – 3.5  0.3 – 1.0 cm. Pedicels erect, glabrous, slender 2 – 4 cm long, partially enclosed within the floral bract, appressed against the stem. Ovaries erect to slightly porrect, near but not usually against the stem, glabrous, narrowly cylindrical, 4.0 – 7.0 mm  1.5 – 2.0 mm. Flowers porrect; galea bulbous, glabrous, gibbous at base, shallowly curved throughout, narrowing to a filiform, apical point; translucent white with predominantly green to light brown stripes and markings; petals mostly translucent white with small light green or brown suffusions, margins incurved with well-developed basal flanges, usually not touching; lateral sepals usually translucent white with light brown or green outline and striping, free points usually light brown-green, basal half of lateral margins covered with prominent white trichomes. Dorsal sepal cucullate, glabrous, broadest nearest the base, 2.0 – 2.5 cm long, tapering to an apical filiform, straight to decurved point, 10 - 14 mm long. Lateral sepals deflexed, narrow at base and conjoined in basal half, flat to shallowly concave lateral margins, sparsely ciliate, conjoined part 8 – 11 mm long, 7 – 10 mm wide; free points curved forward, filiform, 11 – 23 mm long, spreading. Petals asymmetrical obong-lancolate, falcate, 0.8 – 1.2  4.2 – 6.2 mm, dorsal margin prominently thickened, glaborus, anterior margin curved, glabrous, proximal flange brown prominent, apex acuminate. Labellum insectiform on a visible claw, articulate, highly sensitive to touch, nested between conjoined part of the lateral sepals when exposed and in set position; 6.2 – 7.9  1.7 – 2.9 mm, 0.3 – 0.4 mm deep, usually solid green or brown, laminar oblanceolate with basal lobe: 1.6 – 2.5  0.7 – 1.3 mm, 1.4 – 2.0 mm wide; distal margins slightly uneven with a series of spreading white setae, largest nearest the base, smaller towards apex, 1.1 – 2.5 mm long, with twin pairs of prominent long setae, 2.6 – 4.6 mm long below the basal lobe, occasionally a set of hairs, 1.0 – 1.5 mm, extending from the basal mound, not always present. Column porrect, incurved, extending most of the length of the bulbous part of the galea, partly visible through translucent parts of the galea; column wings rectangular, distal margins covered in a series of fine, dense setae. Anther obtuse, green, c. 1 mm long. Pollinia linear, yellow. Flowering: — Peak flowering November.	en	Reiter, Noushka, Kosky, William, Clements, Mark (2021): Two new species of Pterostylis (Orchidaceae; Orchidoideae) from the Sunset Country, Victoria, Australia. Phytotaxa 500 (3): 153-165, DOI: 10.11646/phytotaxa.500.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.500.3.1
3A6A87B14954FFC9FF6787BB3249FE59.taxon	description	Habitat: — Different semi-arid habitats, the first a floristically depauperate, low-lying, seasonally inundated open Eucalyptus woodland on cracking clays dominated by Eucalyptus calycogona subsp. trachybasis and Eucalyptus phenax subsp. phenax, and the second site a diverse open eucalypt woodland dominated by Eucalyptus largiflorens, Bursaria spinosa Cavanilles (1797: 30), Chrysocephalum semipapposum Steetz in Lehman (1845: 474), Rhodanthe corymbiflora (Schlechtendal 1848: 448) Wilson (1992: 391) with a diverse understory community of grasses and geophytes.	en	Reiter, Noushka, Kosky, William, Clements, Mark (2021): Two new species of Pterostylis (Orchidaceae; Orchidoideae) from the Sunset Country, Victoria, Australia. Phytotaxa 500 (3): 153-165, DOI: 10.11646/phytotaxa.500.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.500.3.1
3A6A87B14954FFC9FF6787BB3249FE59.taxon	distribution	Distribution: — Currently known from two widely disjunct populations (Fig. 1) within Wyperfeld National Park and a reserve near Boort, with unconfirmed reports from one further location within Wyperfeld National Park. Conservation status: — Endangered, P. peakallana meets the IUCN criteria (IUCN, 2012) EN D for endangered with less than 250 individuals known. However, considering the large area of similar habitat within Wyperfeld, Murray Sunset and surrounding reserved areas, adequate surveys for this species in mid-November in years of high rainfall are required to accurately determine its status.	en	Reiter, Noushka, Kosky, William, Clements, Mark (2021): Two new species of Pterostylis (Orchidaceae; Orchidoideae) from the Sunset Country, Victoria, Australia. Phytotaxa 500 (3): 153-165, DOI: 10.11646/phytotaxa.500.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.500.3.1
3A6A87B14954FFC9FF6787BB3249FE59.taxon	etymology	Etymology: — Named in honour of Rod Peakall in recognition of his role in elucidating the pollination mechanisms of many Australian orchids and his contributions to understanding evolution of pollination by sexual deception. Additional specimens examined: — Australia. Victoria: Wyperfeld National Park, Brocken Bucket, 130 m, 9 Nov 2019, Reiter 426 (MEL 2481889 A); Wyperfeld National Park, Brocken Bucket, 130 m, 9 Nov 2019, Reiter 423 (MEL 2481886 A); Wyperfeld National Park, Brocken Bucket, 130 m, 9 Nov 2019, Reiter 424 (MEL 2481887 A); Marmal NCR, 9 Nov 2019, Reiter 420 (MEL 2481883 A); Marmal NCR, 9 Nov 2019, Reiter 422 (MEL 2481885 A); Marmal NCR, 104 m, 9 Nov 2019, Reiter 421 (MEL 2481884 A); Marmal NCR, 104 m, 3 Nov 2016, Radford s. n. (MEL 2411314); Marmal NCR, 104 m, 9 Nov 2019, Reiter 433 (MEL 2481896 A).	en	Reiter, Noushka, Kosky, William, Clements, Mark (2021): Two new species of Pterostylis (Orchidaceae; Orchidoideae) from the Sunset Country, Victoria, Australia. Phytotaxa 500 (3): 153-165, DOI: 10.11646/phytotaxa.500.3.1, URL: http://dx.doi.org/10.11646/phytotaxa.500.3.1
