Trichilia micrantha Benth.

Pennington, Terence D., 2016, Systematic Treatment Of American Trichilia (Meliaceae), Phytotaxa 259 (1), pp. 18-162 : 76-77

29. Trichilia micrantha Benth. in Hooker’s J. Bot. Kew Gard. Misc. 3: 369 (1851); T.D.Penn., Fl. Neotrop. 28: 69

(1981). Type :— BRAZIL. Amazonas , Barra do Rio Negro, fl., Spruce 1417 (holotype, K; isotypes, BM, C, G, G-DC, GH, GOET, M, NY, OXF, P). Map 34

For synonymy see FN 28: 69 (1981). Illustration: FN 28: 70, fig. 8 (1981).

Abbreviated Description. Twigs with conspicuous pale lenticels, indumentum of simple hairs, leaflets mostly 7–9, opposite or subopposite, mostly 12–20 cm long, 3–6 cm broad, oblong, elliptic or oblanceolate, inflorescence usually clustered near shoot apex in axils of underdeveloped leaves, 8–25 cm long, a slender to broad pyramidal thyrse, petals free, 2–2.5 mm long, imbricate, filaments fused one quarter to one third of their length, anthers (9–)10(–11), nectary a thick fleshy annulus, ovary glabrous, 3(–4)-locular, locules 1-ovulate, fruit 1–2.3 cm long, 3-valved, usually ellipsoid, sericeous, tomentose or glabrous, seeds 1–3, completely surrounded by a fleshy arillode.

Distribution & Ecology. Northern South America from Venezuela, Trinidad and the Guianas to southern Brazilian Amazonia, and also in the Amazonian drainage of Colombia, Ecuador, Peru and Bolivia. A tree of non-flooded evergreen rain forest usually below 500 m elevation but occasionally reaching 1200 m.

Representative Additional Collections. COLOMBIA. Amazonas: Araracuara, Villazul (SW0072), Londono et al. 34 (K). Caqueta: Parque National Natural Chiribiquete (NW0172), Barbosa & Rueda 8208 (K).

VENEZUELA. Bolívar: Distrito Sifontes, 58 km W of Santa Elena de Uairen (NW0461), Aymard 481 1 (K). Sucre: Peninsula de Paria, Rio Cumana (NW1062), Steyermark & Liesner 120605 (K). Territorio Federal Amazonas: Neblina Base Camp, Rio Mawarinuma (NW0066), Boom & Weitzman 5648 (K).

TRINIDAD. Mt. Tocuche (NW1061), Britton et al. 1319 (GH, K, NY).

GUYANA. Potaro-Siparuni Region: Kaieteur Falls National Park (NW0559), Hahn et al. 4772 (K).

SURINAM. Vicinity of Ulemari River, ca. 150 km upstream from confluence with Litani River (NW0254), Evans & Peckham 2916 (K).

FRENCH GUIANA. Saül and vicinity Route de Belizon (NW0353), Mori et al. 24820 (K).

MAP 34. Distribution of Trichilia micrantha Benth. Solid dots, distribution pre-1981, open dots new records 1981–2010.

ECUADOR. Orellana: Yasuní Forest Reserve, km 70–100 E of PUCE Station (SW0076), Acevedo-Rodríguez & Cedeño 7634 (K). Pastaza: Rio Curaray, mouth of Rio Querano (SW0176), Palacios & Neill 789 (K). Zamora-Chinchipe: Rio Tundaime mining camp (SW0378), van der Werff et al. 19291 (K).

PERU. Loreto: Yurimaguas to Tarapoto km 30, San Tomas (SW0676), Pennington et al. 17392 (K, MOL). Pasco: Oxapampa, Palcazu, Alto Rio Iscozacin (SW1075), Foster & d’Achille 10179 (K). Puno: Rio Tavara base camp (SW1369), Gentry et al. 76635 (K).

BOLIVIA. Cochabamba: Province Carrasco (SW1764), D.N.Smith 13039 (K). Pando: 80 km SW of Cobija, Limoero (SW1169), Groves-Raines & Cariel 109 (K).