Cremastosperma peruvianum R. E. Fr.

Tree 2–7 m tall; young twigs and petioles glabrous. Leaves: petioles 3–15 by 4–8 mm, verrucose or transversally furrowed; lamina elliptic to obovate or narrowly so, 38–64 by 11–17(–24) cm (index 2.7–4.4), chartaceous or coriaceous, pale olive or brownish-green on both sides, glabrous, base obtuse, rounded or cordate, often asymmetrical, apex acuminate (acumen 15–35 mm long), primary vein deeply grooved in basal half, 3–5 mm wide at widest point, glabrous, secondary veins 20–26, intersecondary veins 1–2, distance between from 2–10 mm at the base, 20–40 mm in the centre, 10–20 mm closer to the apex, angles with primary vein from 55–65° at the base to 70–80° closer to the apex, not branching, forming mostly distinct loops, smallest distance between loops and margin 2–4 mm, tertiary veins percurrent. Inflorescence of single solitary flowers, on leafy or leafless twigs; short axillary shoot, 1–1.5 by 1–1.5 mm (in flower), ca. 3 by ca. 2.5 mm (in fruit), sparsely covered with appressed or erect golden hairs <0.1 mm long or glabrous; pedicels 18–20 by ca. 1 mm at the base (in flower), 20–25 by ca. 2 mm (in fruit), red in vivo, glabrous; 2 lower bracts, elliptic, ca. 1 by 0.5 mm, obtuse, soon falling off, sparsely covered with appressed golden hairs <0.1 mm long; upper bract attached near the base of the pedicel, (broadly) ovate, 1.5–3 by ca. 1.5 mm, rounded, glabrous; closed flower buds broadly ovoid-triangular, remaining loosely closed in development; flowers green, maturing to bright yellow (green at the base) outside, brown inside in vivo, orange or yellowish-brown (sepals and bracts lighter) in sicco, sepals and petals glabrous; sepals free, broadly ovate, appressed, ca. 4 by 3.5 mm, obtuse, soon falling off; outer petals elliptic to narrowly obovate, 15–29 by 8–13 mm, obtuse, inner petals narrowly elliptic to narrowly obovate, (13-)21–25 by 4–8 mm; androecium diam. unknown, stamens 1.5–2 mm long, connective appendage 0.6–0.8 mm wide; gynoecium diam. unknown, carpels ca. 2 mm long. Monocarps 3–20, ellipsoid, asymmetrical, 16–19 by 12–13 mm, green maturing to yellow, purple or black in vivo, reddish-brown, dark brown or black in sicco, without apparent apicule; stipes 20–40 by 2 mm; fruiting receptacle 4–9 mm diam.; monocarps, stipes and receptacle glabrous. Seeds broadly ellipsoid, reddish-brown, pitted, ca. 11 by 10 mm, raphe sunken, regular.

Peru (Amazonas, Loreto).