Vigna peduncularis
Diagnostic description 5
Vigna peduncularis (Kunth) Fawcett & Rendle, Fl. Jam. 4(2): 68. 1920.
Basionym: Phaseolus peduncularis Kunth
Herbaceous vine, creeping or climbing twining, attainig 2 m in length. Stems branched from the base, slender, almost cylindrical, puberulent, usually producing roots in the area of the nodes. Leaves alternate, trifoliolate; leaflets chartaceous, ovate-deltate or lanceolate, 3-8 × 1.5-5 cm, both surfaces glabrous, the venation slightly prominent on the lower surface, the apex acute, acuminate, or less frequently obtuse, the base cuneate, the margins entire, slightly ciliate; terminal leaflet larger than the lateral ones; lateral leaflets asymmetrical at the base, one side obtuse, the other cuneate or truncate; petiolules ca. 3 mm long, puberulent; rachis 5-10 mm long, striate; petioles 2-7 cm long, striate, slender, glabrous; stipels obovate, ca. 1 mm long; stipules oblong or lanceolate, 2-2.5 mm long. Pseudoracemes axillary, up to 26 cm long, the flowers 2 per node, in the distal portion of the inflorescence; peduncles thick, glabrous or puberulent; pedicels ca. 1 mm long, erect, with the calyx in an ascending position. Calyx green, campanulate, puberulent, 2.2-2.5 mm long, the sepals more or less equal, broadly deltate, except for the abaxial one, which is narrower and slightly longer; corolla pale pink, standard obovate, unguiculate, ca. 8 mm long, the wings and the keel as long as the standard, the wings oblong, sinuate, unguiculate, the keel spirally twisted. Legumes ascendent, linear, flattened, straight, with the margins slightly undulate, 4-5.5 cm long, ca. 3 mm wide, puberulent, punctate. Seeds oblong, ca. 3.5 mm long, light brown with blackish spots, the hilum white, ca. 2 mm long.
Phenology: Collected in flower and fruit in November and January.
Status: Native, uncommon.
Selected Specimens Examined: Acevedo-Rdgz., P. 310; 10567; 10723; 10778; 11640. Vigna unguiculata: Acevedo-Rdgz., P. 9411; 10859; Britton, N.L. 1464; Goll, G.P. 1061; Sintenis, P. 2910; Stevenson, J.A. 2176.
Distribution 6
Distribution: In disturbed places like roadsides and pastures. Also in the Antilles, Central merica, and South America.
Public Forest: Río Abajo.
Sources and Credits
- (c) Mauricio Mercadante, some rights reserved (CC BY-NC-SA), http://farm4.staticflickr.com/3760/9279962516_1b0c44e753_o.jpg
- (c) Mauricio Mercadante, some rights reserved (CC BY-NC-SA), http://farm4.staticflickr.com/3686/9277180509_a239257c47_o.jpg
- (c) Mauricio Mercadante, some rights reserved (CC BY-NC-SA), http://farm4.staticflickr.com/3723/9279967364_4b57f7a996_o.jpg
- <a href="http://nt.ars-grin.gov/">ARS Systematic Botany and Mycology Laboratory</a>. Suriname., no known copyright restrictions (public domain), https://plants.usda.gov/gallery/large/vipe7_001_lhp.jpg
- (c) Pedro Acevedo-Rodríguez, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/28435405
- (c) Pedro Acevedo-Rodríguez, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/28435874
