Cremastosperma microcarpum R. E. Fr.

Tree or shrub 2–20 m tall, 2.5–18.5 cm diam.; young twigs and petioles glabrous to rather densely covered with appressed and/or erect white or golden hairs 0.3–0.4 mm long. Leaves: petioles 2–12 by 1.5–3 mm; lamina narrowly elliptic to elliptic or narrowly obovate, 13–31 by 4–12 cm (index 1.8–3.8(–4.8)), chartaceous, green, greyish- or brownish-green or brown on both sides, shiny above, venation below often yellowish, glabrous above, glabrous to rather densely covered with appressed or erect white hairs to 0.2 mm long at the base and on primary and secondary veins below, base acute to obtuse, rarely rounded or narrowly cuneate, apex acuminate (acumen 10–40 mm long), primary vein 1–2 mm wide at widest point, more or less verrucose on both sides, lightly grooved for around half of length, secondary veins 7–15, often 1–4 intersecondary veins, distance between from ca. 5 mm at the base to ca. 20 mm closer to the apex, angles with primary vein mostly from 45–60° at the base to 60–80° closer to the apex, not branching, forming distinct loops, smallest distance between loops and margin 2–7 mm, tertiary veins percurrent. Inflorescence of single flowers, solitary or clustered in groups of up to 3, on leafy or leafless twigs; peduncles (3–)5–15 by ca. 1 mm (in flower), 4–15 by 1–2 mm (in fruit); pedicels (5–)12–24 by ca. 1 mm at the base (in flower), 10–25 by 1–2 mm (in fruit), peduncles and pedicels sparsely to rather densely covered with appressed or erect whitish hairs to 0.3 mm long; 1 to several lower bract(s), the basal-most small and scale-like, those more apical mostly (long) elliptic, occasionally leaf-like, 2–6(–60) by ca. 1 mm, acute, soon falling off, rather densely covered with appressed white hairs to 0.3 mm long; upper bract attached mostly on the basal half of the pedicel, ovate to deltate, 1.5–2.5 by 1–1.5 mm, obtuse or acute, sparsely to rather densely covered with appressed or erect golden hairs to 0.3 mm long; closed flower buds very broadly to depressed ovoid, opening loosely in development; flowers green, maturing to brown, (pale) yellow, cream or white outside, cream or yellow inside, sepals green or dark brown outside, green with a pink base inside in vivo, pale (orange-) brown or brown with dark or reddish-brown base in sicco, sepals and petals rather densely to densely covered with appressed or erect golden hairs (whitish close to the edges) to 0.3 mm long; sepals free or connate for 0.5 mm, broadly ovate to deltate, not reflexed, 3–4[-6] by 2.5–4[-6] mm, obtuse, soon falling off; outer petals ovate to very broadly ovate, rounded, 11–18[-19] by 10–17 mm, inner petals elliptic to (narrowly) obovate, obtuse, 10–16[-22] by 5–8[-10] mm; androecium ca. 7 mm diam., stamens 1.3–1.5 mm long, connective appendage 0.6–0.8 mm wide; gynoecium ca. 1 mm diam., carpels 2–2.5[-2.9] long, sparsely covered with erect whitish hairs to 0.1 mm long. Monocarps (8-)17–33, ellipsoid to broadly ellipsoid, asymmetrical, 8–11 by 6–8 mm, often with an oblique longitudinal groove corresponding to the seed raphe, green maturing to pink or orange through purple or brownish-red, brown and black in vivo, dark or reddish-brown in sicco, with an excentric apicule, monocarps, stipes and receptacle sparsely to rather densely covered with erect whitish hairs ca. 0.1 mm long; stipes 8–16 by 1 mm; fruiting receptacle 4–8 mm diam. Seeds broadly ellipsoid, orange brown, pitted, 6–8 by 5–6 mm, raphe sunken, somewhat irregular.

Amazonian Colombia (Amazonas), Ecuador (Morona-Santiago), Peru (Amazonas, Loreto) and Brazil (Amazonas).