Eperua oleifera Ducke

Eperua oleifera Ducke

Eperua oleifera Ducke, Rev. Bot. Appl. & d’Agric. Trop. 12: 437, June 1932; Bull. Mus. Nat. Hist. Paris, ser. 2, 4:728, Oct 1932.

Small to large tree, the branchlets glabrous, minutely strigulose or micropuberulous; stipules persistent, joined laterally in a compound, intrapetiolar body 2–4 mm long and 3–4 mm wide, broadly ovate, minutely strigulose externally, glabrous on the inner surfaces, ciliolate; petioles 13–23 mm long, usually microscopically puberulous or strigulose, rarely glabrous, the rachis 38–60 mm long, pubescent as petioles; leaflets 3-jugate, the petiolules 4–5 mm long, sparingly microstrigulose or micropuberulous, the blades pellucid-punctate plane, thinly coriaceous to stiffly so, the margins usually with a thickened vein, glabrous or rarely microstrigulose sparsely below, 5.5–9 cm long, 3.56.5 cm wide, broadly ovate or oval to elliptic, the base rounded-obtuse or cordate, the apex bluntly acute to acuminate, the venation prominulous; inflorescence a terminal raceme of racemes 3–7.5 cm long, the axes minutely strigulose to tomentulose, the bracts caducous to deciduous, more or less broadly ovate, 1.5–2 mm long and wide, minutely strigulose to tomentulose externally, the bracteoles persistent at least to anthesis, 1.5–2 mm long and wide, broadly ovate to triangular-ovate, pubescent as bracts, arising near pedicel-apex; pedicels 4.5–8 mm long, minutely strigulose to tomentulose, the hypanthium 1–2 mm long, 2.5–3.5 mm in diameter, equilateral; dorsal sepal larger, concave, oval or ovate, the others narrow elliptic and the lateral two somewhat arcuate, 7–10 mm long, 2.5–5 mm wide, microstrigulose to tomentulose externally, glabrous within; petal pale lilac to rose-purple or purple, 25–40 mm long, 35–50 mm wide, flabelliform, somewhat attenuate and gibbous basally; 4 or 5 stamens apparently fertile (the anthers larger), the filaments of 9 joined in a strongly inequilateral tube 4 mm long on the shorter side and 5–6 mm long on the other side, the filaments of the fertile stamens 20–30 mm long, the sterile ones and the free stamen 12–17 mm long, the tube and the sterile one free, the filaments villose, the anthers 1.5–2 mm long, 0.8–1 mm wide, oval, those of sterile stamens smaller, malformed, glabrous, acute apically; gynoecium glabrous, the stigma obtuse to clavate or capitellate, the style 20–24 mm long, the ovary obovate, 3–4.5 mm long, 1.5–2 mm wide, the gynophore 3–3.5 mm long; fruit flat, glabrous, ca. 6 cm long and 3.5 cm wide, the seed 25 mm long, 18 mm wide, glabrous, brown-black, nitid, pittedreticulate.

Eperua oleifera là một loài thực vật có hoa trong họ Đậu. Loài này được Ducke miêu tả khoa học đầu tiên.