Cremastosperma leiophyllum (Diels) R. E. Fr.

Shrub or tree 3–20 m tall, 3–18 cm diam.; young twigs and petioles glabrous. Leaves: petioles 4–12 by 1–3(–4) mm; lamina obovate to elliptic or narrowly so, 12–28 by 4–9(–12) cm (index 2–3.9), chartaceous, often green or greenish-brown above and below, more greyish above with darker or reddish veins, glabrous on both sides, base acute to obtuse, apex acuminate (acumen 5–15 mm long), primary vein 1.5–3 mm wide at widest point, verrucose, secondary veins 7–13, intersecondary veins 1–6, distance between from 14–24 mm at the base to 10–25 mm closer to the apex, angles with primary vein from 60–80° at the base to 40–50° closer to the apex, not branching forming distinct loops, smallest distance between loops and margin 2–4(–6) mm, tertiary veins percurrent. Inflorescence of single flowers, solitary or clustered in groups of up to 4, on older, leafless twigs; peduncles 1–2 by 1–2 mm (in flower), 2–4 by 1.5–3 mm (in fruit), sparsely covered with appressed golden <0.1 mm long hairs or glabrous; pedicels 18–34 by 1–1.5 mm at the base (in flower), 18–34(–43) by 1–3 mm (in fruit), glabrous; 1–3 lower bracts, depressed ovate, ca. 0.5 by 1 mm, obtuse, soon falling off, glabrous; upper bract attached around midway along pedicel, ovate to broadly so, ca. 1.5 by 1 mm, obtuse, glabrous; closed flower buds depressed ovoid, opening early in development; flowers green maturing to yellow or creamy yellow in vivo, dark yellow, reddish-brown or dark brown in sicco; sepals free, very broadly ovate-triangular, recurved, 2–3 by 2–3 mm, obtuse, soon falling off, sepals and petals glabrous; outer petals elliptic, 12–15 by 8–11 mm, rounded, inner petals elliptic, 13–15 by 6–8 mm; androecium ca. 7 mm diam., pinkish in vivo, stamens 1.4–1.8 mm long, connective appendage ca. 0.8 mm wide; gynoecium ca. 2 mm diam., carpels 2–2.2 mm long, glabrous. Monocarps, stipes and receptacle glabrous, monocarps 6–30, ellipsoid, asymmetrical, 14–17 by 8–9 mm, green maturing to yellow, orange-red and red in vivo, black (reddish-brown when immature) in sicco, with an excentric apicule; stipes 16–26 by 1–1.5 mm; fruiting receptacle 4–9 mm diam. Seeds ellipsoid, light brown, pitted ca. 12 by 7 mm, raphe sunken, regular.

Bolivia (Beni, Cochabamba, La Paz, Santa Cruz).

Cremastosperma leiophyllum là loài thực vật có hoa thuộc họ Na. Loài này được (Diels) R.E.Fr. mô tả khoa học đầu tiên năm 1931.