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Project Name Data (Last Modified On 9/27/2013)

Flora Data (Last Modified On 9/27/2013)
Species Eriosema violaceum (Aubl.) G. Don
PlaceOfPublication Gen. Hist. 2: 347. 1832.
Synonym Cystisus violaceous Aubl., Hist. P1. Guiane 2: 766. 1775. TYPE: French Guiana, "Guianae in pratis Macouria," not seen. Crotolaria lineata Lam. Encyl. MWth. Bot. 2: 202. 1786. TYPE: not seen. Rhynchosia violacea DC., Prodr. 2: 388. 1825. TYPE: not seen.
Description Herb or subshrub, few to many branched; branches erect or ascending from a woody base; stems puberulent, villous. Leaves trifoliolate, the leaflets linear lanceolate, 4.7-8.0 cm long, 0.6-1.2 cm wde, apically obtuse, basally cuneate, the margins revolute, the upper and the lower surface strigose, the lower surface gland dotted, terminal leaflet 1/3 longer than the laterals; petioles 2.0-4.0 mm long, densely villous, appressed, the stipules lanceolate, striate, connate, pilose, per- sistent, 6.0-10.0 mm long, 2.0-3.0 mm wide. Inflorescence 4.7-7.0 cm long, multiflorate with 30-35 flowers, in loose clusters; peduncle 2.2-3.0 cm long; ped- icel 1.8-2.0 mm long; bracts subtending the flowers caducous, ovate, 2.5-4.0 mm long, 1.5 mm wide; bracts subtending the inflorescence lanceolate, 0.6 cm long, 0.2 cm wide, striate, puberulent. Flowers with the calyx 0.3-5 mm long, the lobes 1.5-3.0 mm long, the upper lobe slightly longer, externally glandular, villous; corolla yellow, 6.0-8.0 mm long, the standard obovate, 7.0-8.0 mm long, 4.0-5.0 mm wide, auriculate at the base, the wings oblong, 7.0-7.5 mm long, 2.5-3.0 mm wide, the claw 2.0 mm long, the keel 7.0-7.5 mm long, 2.5-3.0 mm wide, the claw 3.0 mm long; stamens 7.0 mm long.Truit ovate, 0.7-1.0 cm long, 0.4-0.6 cm wide, densely villous; seeds 3.5-4.5 mm long, oval black.
Habit Herb or subshrub
Distribution ranges from southern Mexico and the Greater Antilles southward to central and northwestern Brazil.
Note It occurs in savannas, cerrados and palm and pine forests and, particularly in Panama, along streambanks. Eri- osema violaceum is- distinguished by its narrow leaflets with revolute margins and its many flowered raceme.
Specimen CANAL ZONE: Rio Azote, 66-70 m, Dodge et al. 16847 (MO). COCLE: Penonome, 50-1000 ft, Williams 96 (NY). PANAMA: near Pacora, 0-100 m, Burt & Rattray 18 (MO). Rio Puente near junction with Rio Chagres, Dodge et al. 16846 (GH, MO). Rio Pacora and Chepo, Duke 5912 (MO). Orillas del camino ca. 1.5 km del Rio Cabra, camino a Chepo, Taylor (MO).
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