taxonID	type	description	language	source
5B2FE5616EE35211BEC1DD79A1B658CB.taxon	materials_examined	Type. Mexico. Oaxaca, distrito de Tehuantepec, 7 km al O-NO de Tehuantepec, 17 March 1981, M. Sousa et al. 11938 (holotype: MEXU! 410015; isotypes: BM, CAS accession 0004063 [image!], F accession 2064374 [image!], MEXU accessions 41011 [image!], 410013 [image!], 410016 [image!], MO accession 3481860 [!]).	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
5B2FE5616EE35211BEC1DD79A1B658CB.taxon	distribution	Geographic distribution. Gretheria campylacantha occurs discontinuously in the Pacific lowlands of south-eastern Mexico (Guerrero, Michoacan and Oaxaca) and in the interior and Pacific lowlands of Central America (from Comayagua Department in Honduras to Boaco Department in Nicaragua).	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
AEBCCA5CA03655D2B77CF42870B7FB8E.taxon	diagnosis	Diagnosis. Similar to Havardia in arboreal or shrubby habit, vegetative branches arising both proleptically and sylleptically, leaves microphyllous, inflorescence arising on long shoots, pod flattened-compressed and seed plumply disciform to orbicular, but differing in the pinnae distally accrescent (vs. decrescent at each end in Havardia), the calyx longer and deeply campanulate (vs. shorter, and shallowly campanulate), and the corolla lobes erect-ascending at anthesis (vs. recurved).	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
AEBCCA5CA03655D2B77CF42870B7FB8E.taxon	materials_examined	Type. Gretheria sonorae (S. Watson) Duno & Torke.	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
AEBCCA5CA03655D2B77CF42870B7FB8E.taxon	description	Description. Xerophytic, microphyllous arborescent shrubs and small trees, 2 - 14 m tall, commonly armed with stout recurved, lignescent stipules on the trunk and at each node of long-shoots, indumented with minute whitish trichomes on new growth. Leaves bipinnate, with 1 - 6 (13) pairs of pinnae; leaflets 10 - 31 per pinna; principal leaf axis typically 2 - 15 cm long, with the petiole 2 - 24 mm long, bearing a nectary at or below the mid-point of the petiole, the nectary sessile, shallow-cupular, thick-rimmed or plane and dimpled, pinnae axes sometimes with similar but smaller nectaries between 1 - 2 (3) distal-most pinna pairs and a minute one at the tip of some pinna-rachises; leaflets opposite, the blade oblong-elliptic to linear-oblong, subcordate at base, obtuse or shortly apiculate at apex; pilosulous or glabrous and marginally ciliolate; venation pinnate, immersed above, prominulous beneath, the mid-rib slightly displaced, giving rise on each side to 2 - 5 weak secondary veins expiring submarginally or faintly brochidodromous. Inflorescence capituliform racemes arising from leaf axils of long shoots and coeval with or preceding the leaf and / or arising from brachyblasts; peduncles (1.3) 2 cm long; capitula 10 - 37 - flowered, receptacle clavate, 1.5 - 2.5 mm diameter; bracts ovate, minute, less than 1 mm long, sessile, persistent into anthesis. Flowers sessile, homomorphic, the perianth 5 - merous; calyx deeply campanulate, glabrous, teeth deltate-ovate, ciliolate and sometimes distally puberulent or strigose; corolla subcylindrical, lobes erect, white-silky strigose dorsally; androecium 40 - 52 - merous, 9 - 13 mm long, tube 3.6 - 5 mm long, nectar disc simple callosities or 5 - lobed, 0.2 - 0.35 mm tall; ovary subsessile, slenderly ellipsoid, stipe 0.1 - 0.25 mm long; style about as long as stamens, the stigma poriform. Pods 1 - 3 per capitulum, oblong in profile, contracted at base into a pseudostipe + / - 5 - 14 mm long and abruptly so at apex into an erect cusp 1.5 - 8 mm long; body straight or almost straight, 6.5 - 13 x (1.3) 1.2 - 2.4 (2.6) cm, plano-compressed, the valves bluntly framed by longitudinally 3 - ridged sutures + / - 1.5 - 2 mm wide, stiff, somewhat brittle, brownish-green, externally veinless, glabrous, red-granular or both granular and puberulent outside, the cavity continuous; funicle dilated, sigmoid. Seeds transverse, 8 - 13, plumply disciform to orbicular in outline, 9 - 12 x 7 - 10 mm, the pleurogram U-shaped.	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
AEBCCA5CA03655D2B77CF42870B7FB8E.taxon	distribution	Geographic distribution. Gretheria comprises two species in United States (Texas), Mexico and Central America (Honduras and Nicaragua).	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
AEBCCA5CA03655D2B77CF42870B7FB8E.taxon	etymology	Etymology. The generic name honours Rosaura Grether Gonzalez, an extraordinary and prolific Mexican botanist, with whom we had the pleasure of sharing her experience as a botanist and colleague. Her profound dedication and perseverant commitment to botanical research over decades has contributed importantly to our knowledge and understanding of Leguminosae, especially of the genus Mimosa L.	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
77D0E4DF097D5B4F9982402EE818DE27.taxon	materials_examined	Type. Mexico. Sonora, common at Guaymas 1887, E. Palmer 58 (holotype: GH accession 00064044 [image!]; isotypes: K accession 000082458 [image!], NDG 46766 [image!], NY accessions 00329628, 00329629 [images!], UC accession 84451 [image!], US accessions 00918587, 00918589 [image!], YU accession 001418 [image!]).	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
77D0E4DF097D5B4F9982402EE818DE27.taxon	distribution	Geographic distribution. Coastal plain of Baja California Sur, Sonora and Sinaloa in Mexico.	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
D822D03254A35F56822E45BE84650C9C.taxon	materials_examined	Type. Ricoa leptophylla (DC.) Duno & Torke.	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
D822D03254A35F56822E45BE84650C9C.taxon	diagnosis	Diagnosis. Similar to Painteria in shrubby habit with pronounced growth dimorphism into long- and short-shoots, deciduous microphyllous leaves and recurved pods with the fruit valves coriaceous to lignescent and elastically reflexed with age, but differing in the leaves with 3 - 7 (9) pairs of pinnae (vs. 1 - 2 in Painteria), the leaflets 10 - 25 per pinna (vs. 3 - 12), the floral bracts 0.8 - 2.1 mm long (vs. 0.4 - 0.7 mm), the flowers shortly pedicellate (vs. sessile) and the corolla lobes recurved (vs. erect-ascending).	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
D822D03254A35F56822E45BE84650C9C.taxon	description	Description. Low xerophytic stiffly branched microphyllous shrubs 2 - 1.5 m tall, often growing in patches several metres in diameter, armed at each node of flexuous long shots with a pair of lignescent stipules, young growth indumented with minute whitish hairs. Stipules converted with straight to recurved spines with a thickened base, the spines 3 - 10 mm long. Leaves bipinnate with 3 - 7 (9) pairs of pinnae; leaflets 8 - 25 pairs per pinna, the primary leaf axis 0.5 - 5 cm long, with the petiole 2.5 - 10 (18) mm long and a subsessile circular nectary between the first pinnae pair (sometimes also between the second pair), nectaries absent on pinna-rachises; leaflets opposite, narrowly- or linear-oblong or lanceolate, semi-cordate at base, obtuse to weakly apiculate at apex, puberulous abaxially, marginally ciliate, the venation weakly developed, nearly simple or 1 - branched, the mid-rib prominulous only dorsally, subcentric. Inflorescence of capitula arising from brachyblasts, peduncle 1 - 18 mm long; receptable clavate, 1.5 - 2.5 mm long, capitula globose, 1 - 1.5 cm in diameter, 16 - 35 - flowered; bracts linear-oblanceolate or spatulate, 0.8 - 2.1 mm long, persistent into anthesis. Flowers externally homomorphic, but some functionally staminate, pedicellate, perianth 5 - merous; pedicel 0.2 - 0.6 mm long; calyx campanulate, contracted at base, 1.3 - 3.2 mm long, minutely puberulent (or just on teeth), teeth ovate or deltate, 0.2 - 0.9 mm long; corolla reddish or greenish, tubular, 3.5 - 5 mm long, lobes ovate, recurving. 1.2 - 1.9 mm long, puberulous and densely fimbriolate on lobes; androecium 40 - 76 - merous, 5 - 10.5 mm long, tube 2 - 4 mm long; ovary slenderly ellipsoid, compressed, glabrous, on a short stipe 1 - 1.4 mm long, style in bisexual flowers often longer and more robust than stamens. Pods l- 2 (4) per capitulum, falcately or subcircinnately broadly linear in profile, attenuate into an erect cusp 2 - 6 mm long, the body 7 - 11.5 x 1.1 - 1.9 cm, 8 - 10 - seeded, the valves stiffly leathery, at first plano-compressed, becoming turgid and low-convex (on both faces of pod) over each seed, densely grey puberulent, becoming glabrescent and dark castaneous, indistinctly venulose, the cavity continuous, dehiscence inert through both sutures; funicle straight or sinuous (but not sigmoid), seeds obliquely descending, 8 - 10, plumply lentiform, 7.5 - 11 x 3 - 4 mm, the testa smooth, hard, moderately lustrous, dark castaneous, the pleurogram incomplete.	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
D822D03254A35F56822E45BE84650C9C.taxon	distribution	Distribution. Ricoa is found scattered over the Mexican Central Plane, in the States of Chihuahua, Coahuila, Durango, Guanajuato, Hidalgo, Jalisco, Mexico, Michoacan, Oaxaca, Puebla, Queretaro, San Luis Potosi, Tlaxcala and Zacatecas.	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
D822D03254A35F56822E45BE84650C9C.taxon	etymology	Etymology. The generic name honours Maria Lourdes Rico, whose profound dedication and perseverant commitment to botanical research over decades has deeply enhanced knowledge and understanding of the Leguminosae, especially tribe Ingeae.	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
52C1DBD7F0295BCB861549A3C4B458AD.taxon	materials_examined	Type. Mexico. verosimiliter in Hispanorum territorio Americano, P. M. A. Broussonet s. n. [870]. (holotype: M; isotypes: G-DEL [image!], photo, MO [image!]).	en	Tamayo-Cen, Ivan, Torke, Benjamin M., Lopez Contreras, Jose Enrique, Carnevali Fernandez-Concha, German, Ramirez Morillo, Ivon, Can Itza, Lilia Lorena, Duno de Stefano, Rodrigo (2022): Revisiting the phylogeny and taxonomy of the Pithecellobium clade (Leguminosae, Caesalpinioideae) with new generic circumscriptions. PhytoKeys 205: 279-298, DOI: http://dx.doi.org/10.3897/phytokeys.205.82728, URL: http://dx.doi.org/10.3897/phytokeys.205.82728
