Cremastosperma longicuspe R. E. Fr.

Tree or shrub 1.5–20 m tall; young twigs and petioles sparsely covered with appressed whitish or golden hairs to 0.2 mm long. Leaves: petioles 4–14 by 1–3 mm; lamina elliptic, obovate or narrowly so, 10–27 by 3–11 cm (index 1.5–5), chartaceous, green or greyish-green above, green or brownish-green below, glabrous above, very sparsely covered with appressed whitish hairs to 0.2 mm long particularly on veins below, base acute, rarely obtuse, apex caudate (cusp 20–35 mm long), primary vein 1–2 mm wide at widest point, secondary veins 7–15, intersecondary veins 0–1(–4), distance between from 7–15 mm at the base to 9–18 mm closer to the apex, angles with primary vein from 60–80° at the base to 40–50° closer to the apex, rarely branching, forming distinct loops, smallest distance between loops and margin 2–4 mm, tertiary veins more or less percurrent. Inflorescence of single flowers solitary (or clustered in groups of 2), on leafy twigs; peduncles 2–5 by ca. 1 mm (in flower), 4–10 by 1–2 mm (in fruit), sparsely to rather densely covered with appressed golden hairs to 0.2 mm long; pedicels 10–14 by 1–1.5 mm at the base (in flower), 11–20 by 1–2 mm (in fruit), sparsely covered with appressed golden hairs to 0.2 mm long or glabrous; 2 lower bracts of unequal dimensions, basal lower bract deltate, ca. 0.5 by 0.5 mm, acute, soon falling off, apical lower bract narrowly elliptic, ca. 1.5 by 0.5 mm, rounded, soon falling off, lower bracts sparsely covered with appressed golden hairs to 0.1 mm long or glabrous; upper bract attached near base or midway along pedicel, ovate, ca. 2 by ca. 1 mm, acute, sparsely covered with appressed golden hairs to 0.1 mm long or glabrous; closed flower buds not seen, buds opening loosely in development; flowers yellowish in vivo, brown in sicco; sepals free, deltate, appressed or recurved, 3–4 by 3–4 mm, acute, soon falling off, sepals and petals glabrous; outer petals broadly elliptic, 10–12 by 9–12 mm, inner petals broadly elliptic, ca. 11 by 10 mm; androecium not seen; gynoecium not seen. Monocarps 6–13(–36), ellipsoid, slightly asymmetrical, 12–13 by 8–10 mm, white, red, deep red or deep purple in vivo, reddish-brown to dark brown or black in sicco, with an excentric apicule when unripe; stipes 10–19 by 2 mm; fruiting receptacle 4–5(–9) mm diam.; monocarps, stipes and receptacle glabrous. Seeds ellipsoid, orange or reddish-brown, 8–9 by 5–6 mm, raphe sunken, regular.

Ecuador (Napo); Peru (Loreto, San Martín), most collections found in the basin of the Río Huallaga.