Trigonia sericea Humb., Bonpl. & Kunth

Authority

Lleras, Eduardo. 1978. Trigoniaceae. Fl. Neotrop. Monogr. 19: 1-73. (Published by NYBG Press)

Family

Trigoniaceae

Scientific Name

Trigonia sericea Humb., Bonpl. & Kunth

Type

Type. Humboldt 1859, Colombia,  Andes de Quindie, fl (holotype P nv; isotype P).

Synonyms

Trigonia najadum Warm.

Description

Species Description - Shrub or treelet, the branches terete, lenticellate. Stipules narrowly triangular, membranaceous, 20.0-25.0 mm long, ca 5.0 mm wide, glabrous, caducous; petioles 9.0-15.0(-20.0) mm long, 1.0-2.0 mm thick, slightly strigose; lamina elliptic to broadly elliptic, 6.0-19.0 cm long, 4.0-11.0 cm wide, subcoriaceous, smooth, the margins entire, the apex acuminate, the base obtuse; venation eucamptodromous, the midrib plane above, prominulous beneath, glabrous above, tomentose beneath, the secondary nerves 8-11 pairs, plane above, prominulous beneath; intercostal pubescence absent above, white-lanate beneath. Inflorescences loose terminal and subterminal axillary panicles, to 10 cm long. Flowers in groups of 3-10, (commonly 6-7); peduncles 2.5-4.0 mm long, 0.5-0.7 mm thick, tomentose, the bracts ovate, 1.5-2.0 mm long, 0.3-0.5 mm wide, tomentose; the pedicels 0.9-1.2 mm long, ca 0.6 mm thick, tomentose; sepals ovate, 3.5-5.0 mm long, 1.5-2.5 mm wide, strigose; standard 4.0-5.0 mm long, 3.5-4.0 mm wide, the pouch extending ½ of the length, the upper portion erect or revolute, the apex irregular, barbate pubescent at the inside of the throat, the wings spathulate, 3.5-4.0 mm long, 2.0-3.0 mm wide, the apex irregular, barbate at the inside of the base, the keel petals 2.5-3.5 mm long, 3.0-3.5 mm wide, the pouch extending along 2/3 of the length, the apex irregular; stamens 10, 6 fertile, 4 staminodes, the Filaments 1.4-1.8 mm long, free for ½ the length, the anthers elliptic to oblong, 0.6-0.8 mm long, 0.3-0.4 mm wide, adhering 3 on each side of the style and completely surrounding it; glands 2, 2-3-lobate, ca 1.0 mm high, 1.5 mm long, with a knob-like projection at the apex of each lobe, glabrous; style 1.5-1.7 mm long, slightly pilose or glabrous, the stigma trilobate, ca 0.2 mm in diameter, ca 0.2 mm high; ovary subglobose, 1.0-1.2 mm in diameter, barbate-pubescent, the ovules numerous. Fruit 3.0 7.0 cm long, the valves 0.5-1.5 cm wide; exocarp thin, fleshy, velutinous-tomentose; endocarp cartilaginous. Seeds numerous, subglobose, ca 2.0 mm in diameter, barbate-pubescent, the trichomes ca 10.0 mm long.

Discussion

Trigonia sericea is probably related to T. prancei, from which it differs in the simpler inflorescence, larger flower parts (in general), and the pubescent leaves, as well as other minor characters.

Distribution

Known only from periodically flooded rainforests in the Amazon basin of Colombia, Venezuela, Peru and Brazil.

Colombia South America| Antioquia Colombia South America| Caldas Colombia South America| Valle Colombia South America| Venezuela South America| Bolívar Venezuela South America| Peru South America| Loreto Peru South America| Brazil South America| Amazonas Brazil South America|