Trichilia quadrijuga Kunth

Pennington, Terence D., 2016, Systematic Treatment Of American Trichilia (Meliaceae), Phytotaxa 259 (1), pp. 18-162 : 82

32. Trichilia quadrijuga Kunth in Humb., Bonpl. & Kunth, Nov. Gen. Sp. 5: 215 (1822); T. D. Penn., Fl. Neotrop. 28: 154 (1981). Type:— COLOMBIA. Magdalena River , fl, fr., Humboldt & Bonpland 1620 (holotype, P-Bonpl.; isotype, P). Maps 37–38

Abbreviated Description. Indumentum of appressed dibrachiate or malpighiaceous hairs, leaflets (6–)9–11(–16)m, alternate to subopposite, 9.5 × 3–19 × 4.5 cm, oblanceolate, oblong, oblong-lanceolate or elliptic, undersurface with some appressed medifixed or dibrachiate hairs, petiole with a pair of subulate scales 1–2 mm long, inflorescence 3–19 cm long, a pyramidal thyrse, petals 4–5, (2–) 3–4 mm long, 1–1.5 mm broad, free or fused for one third to two thirds their length and then becoming free and reflexing, valvate, filaments completely fused into an urceolate or cyathiform staminal tube, anthers 8–10, nectary absent, ovary pubescent, 3(–4)-locular, locules with 2 collateral ovules, capsule (1.5–) 2–3 cm long, 0.6–1.3 cm broad, 3-valved, ellipsoid or narrowly obovoid, papillose and with appressed indumentum, seeds 1–2, 1–1.5 cm long, completely surrounded by a thin fleshy arillode.

Key to the subspecies of Trichilia quadrijuga .

1. Leaves with a pair of caducous vestigial scales 1–2 mm long, near base of petiole, indumentum of appressed dibrachiate hairs on young parts or lower lamina, midrib of leaflet sunken on the upper surface, petals sparsely appressed puberulous or strigulose. .... ............................................................................................................................................................................ a. subsp. quadrijuga .

-. Caducous vestigial scales absent, indumentum of malpighiaceous hairs on young parts and lower leaflet surface, midrib raised on upper surface, petals densely strigulose ............................................................................................................b. subsp. cinerascens .