Trigonia virens J.F.Macbr.
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Authority
Lleras, Eduardo. 1978. Trigoniaceae. Fl. Neotrop. Monogr. 19: 1-73. (Published by NYBG Press)
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Family
Trigoniaceae
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Scientific Name
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Type
Type. Killip & Smith 29539. Peru, Loreto, fl (holotype US; isotypes F, G, NY).
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Synonyms
Trigonia crassiflora A.C.Sm.
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Description
Description - Scandent shrub, the branches terete, lenticellate. Stipules caducous (nv); petioles 5.0-8.0(40.0) mm long, 1.0-2.0 mm thick, densely strigose;lamina elliptic to broadly elliptic, 8.0-16.0 cm long, 4.0-9.0 cm wide, chartaceous, smooth, the margins entire, the apex acute to acuminate, the base acute to obtuse; venation eucamptodromus, slightly strigose-pubescent, the midrib plane above, prominulous beneath, the secondary nerves 6-10 pairs; intercostal pubescence absent on both surfaces, rarely with arachnoid pubescence beneath. Inflorescences condensed terminal and axillary panicles, when axillary, present only associated with one of the leaves of a pair, 2.0-15.0 cm long. Flowers in groups of 1-3 (usually 2); peduncles and pedicels of equal length, 2.04.0 mm long, 0.7-0.9 mm thick, densely strigose, the bracts 1.5-3.0 mm long, ovate, strigose, the bracteoles 1.0-2.5 mm long, narrowly ovate, strigose; sepals ovate to deltoid, the inner ones usually narrower, 4.0-5.5 mm long, 2.5-5.0 mm wide, the exposed portions strigose, the protected portions white-lanate-pubescent; standard 5.0-6.0 mm long, 4.0-5.0 mm wide, the pouch extending 2/3 of the length, the upper portion erect, the apex irregular, barbate-pubescent on the inside of the throat, the wings spathulate, 4.0-5.0 mm long, 3.0-3.5 mm wide, barbate at the inside of the base, the keel petals 4.0-5.0 mm long, 3.0-4.0 mm wide, the pouch extending down, the apex irregular; stamens 8, all fertile, the filaments 1.5-2.0 mm long, free at apex, the anthers ovate-elliptic, 0.6-0.8 mm long, 0.4-0.5 mm wide, adhering 4 on each side of the style;glands 2, 3-lobate, ca 0.9 mm high, 2.0 mm long, glabrous; style clavate, 1.8-2.0 mm long, ca 0.5 mm thick at the apex, the stigma trilobate, white; ovary ovoid, 1.0-1.2 mm high, ca 1.5 mm wide at base, barbate-pubescent, 1-locular, the ovules numerous. Fruit 7.0-8.0 cm long, the valves ca 10.0 mm per side; exocarp thin, coriaceous, glabrous; endocarp cartilaginous. Seeds not seen.
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Discussion
This species is easily distinguished by its large, glabrous leaves, its unilateral, condensed inflorescences, the presence of a clavate style, and the unilocular ovary. Trigonia crassiflora is not taxonomically distinct and thus is here treated as a later synonym.
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Distribution
Growing at low altitude, in humid periodically flooded forests in Colombia, Peru and Brazil.
Peru South America| Brazil South America| Amazonas Brazil South America| Colombia South America| Santander Colombia South America|