Contains 12 accepted taxa overall.
Characteristics
Classification
Citation
RHYNCHOSIA Loureiro, Fl. Cochinch. 425, 460. 1790, nom. cons. vs. Dolicholus Medikus 1787, et vs. Cylista Aiton 1789.
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TYPE: Rhynchosia volubilis Loureiro
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Rhynchosia cinerea | BROWNHAIR SNOUTBEAN | Native | ||
| Rhynchosia cytisoides | ROYAL SNOUTBEAN | Native | ||
| Rhynchosia difformis | DOUBLEFORM SNOUTBEAN | Native | ||
| Rhynchosia michauxii | MICHAUX'S SNOUTBEAN | Native | ||
| Rhynchosia minima | LEAST SNOUTBEAN | Native | ||
| Rhynchosia parvifolia | SMALL-LEAF SNOUTBEAN | Native Threatened-State | ||
| Rhynchosia precatoria | ROSARY SNOUTBEAN | Not Native | ||
| Rhynchosia reniformis | DOLLARLEAF | Native | ||
| Rhynchosia reticulata | HABILLO | Not Native | ||
| Rhynchosia swartzii | SWARTZ'S SNOUTBEAN | Native Rare-State | ||
| Rhynchosia tomentosa var. mollissima | TWINING SNOUTBEAN | Native | ||
| Rhynchosia tomentosa var. tomentosa | TWINING SNOUTBEAN | Native |
Identification Key
1. Leaves with 1(3) leaflets
2
1. Leaves 3-foliolate
3
2. Plant prostrate or trailing, the leaves generally well-spaced and usually not overlapping; calyx 9-15 mm long; fruit scarcely exserted from the calyx
2. Plant erect to 40 cm tall, the leaves generally clustered together and overlapping; calyx 7-10 mm long; fruit much exserted from the calyx
3. Leaflets acuminate at the tip, sometimes only slightly; seeds black or red and black
4
3. Leaflets acute to broadly rounded at the tip (very rarely slightly acuminate); seeds brown
5
4. Stipules absent; leaflet stipels absent; seeds bicolored red and black
4. Stipules persistent; leaflet stipels persistent; seeds red
5. Terminal leaflets 0.8-1.3 times longer than wide
6
5. Terminal leaflets 1.5-2.5 times longer than wide
8
6. Most racemes exceeding the leaves, (1-)4-12 cm long; calyx 2.5-4 mm long
6. Racemes usually shorter than the leaves, 1-4(-8) cm long; calyx 8-14 mm long
8
7. Plant hairs generally <0.4 mm long; petiole pubescent; fruit puberulent
7. Plant hairs commonly >0.7 mm long; petiole hirsute; fruit hirsute and puberulent
8. Plant trailing, prostrate, or vine-like
9
8. Plant erect
10
9. Fresh leaflets bluish or grayish green; leaflets elliptic to elliptic-obovate
9. Fresh leaflets green to olive-green; leaflets generally ovate
10. Leaflets to 2 cm long, 1 cm wide; flowers 1(-3) in the leaf axils; corolla clearly exceeding the calyx
10. Leaflets 2-5(-7) cm long, 1-4 cm wide; flowers numerous in a raceme; corolla subequal to slightly exceeding the calyx
11
11. Stipules caducous; inflorescence a solitary raceme 5-20 cm long
11. Stipules persistent; inflorescence of several racemes 1-3 cm long
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Arcyphyllum | Arcyphyllum Elliott, J. Acad. Nat. Sci. Philadelphia 1: 371. 1818. | TYPE: Non designatus. | |
| Copisma | Copisma E. Meyer, in E. Meyer & Drège, Comm. Pl. Afr. Austr. 132. 1836. | TYPE: Non designatus. | |
| Cyanospermum | Cyanospermum Wight & Arnott, Prodr. Fl. Ind. Orient. 259. 1834. | TYPE: Non designatus. | |
| Cylista | Cylista Aiton, Hort. Kew. 3: 36, 512. 1789, nom. rej. vs. Rhynchosia Loureiro 1790. | TYPE: Cylista villosa Aiton | |
| Dolicholus | Dolicholus Medikus, Vorles. Churpfälz. Phys.-Okon. Ges. 2: 354. 1787, nom. rej. vs. Rhynchosia Loureiro 1790. | TYPE: Dolicholus flavus Medikus, nom. illegit. (Dolicholus minimus Linnaeus) | |
| Hidrosia | Hidrosia E. Meyer, in E. Meyer & Drège, Comm. Pl. Afr. Austr. 89. 1836. | TYPE: Hidrosia bullata E. Meyer | |
| Leucopterum | Leucopterum Small, Man. S.E. Fl. 713. 1933. | TYPE: Leocopterum parvifolium (de Candolle) Small (Rhynchosia parvifolia de Candolle) | |
| Leycephyllum | Leycephyllum Piper, J. Wash. Acad. Sci. 14: 363. 1924. | TYPE: Leycephyllum micranthum Piper | |
| Nomismia | Nomismia Wight & Arnott, Prodr. Fl. Ind. Orient. 236. 1834. | TYPE: Nomismia nummularia (Linnaeus) Wight & Arnott (Glycine nummularia Linnaeus) Lectotypified by Pfeiffer, Nomencl. Bot. 2: 452. 1873. | |
| Orthodanum | Orthodanum E. Meyer, in E. Meyer & Drège, Comm. Pl. Afr. Austr. 131. 1836. | TYPE: Non designatus. | |
| Phyllomatia | Phyllomatia (Wight & Arnott) Bentham, Comm. Legum. Gen. 49. 1837. | BASIONYM: Rhynchosia Loureiro, subg. Phyllomatia Wight & Arnott, Prodr. Fl. Ind. Orient. 239. 1834. | TYPE: Non designatus. |
| Pitcheria | Pitcheria Nuttall, J. Acad. Nat. Sci. Philadelphia 7: 93. 1834. | TYPE: Pitcheria galactoides Nuttall | |
| Polytropia | Polytropia C. Presl, Symb. Bot. 1: 21, t. 13. 1831. | TYPE: Polytropia ferulaefolia C. Presl | |
| Ptychocentrum | Ptychocentrum (Wight & Arnott) Bentham, Comm. Legum. Gen. 49. 1837. | BASIONYM: Rhynchosia Loureiro, subg. Ptychocentrum Wight & Arnott, Prodr. | TYPE: Non designatus. |
| Sigmodostyles | Sigmodostyles Meisner, London J. Bot. 2: 93. 1843. | TYPE: Sigmodostyles villosa Meisner |