Monotes dasyanthus Gilg (1903: 307)

Meerts, Pierre, Rougelot, Quentin & Sosef, Marc, 2017, Revision of the genus Monotes (Dipterocarpaceae) in D. R. Congo, with implications for Angola and its distinction from Marquesia, Phytotaxa 308 (2), pp. 151-205 : 172-173

4. Monotes dasyanthus Gilg (1903: 307)

Type:— ANGOLA. [Cuando-Cubango], Kutsi [Cuchi River], unterhalb Kapulo, 2 May 1900, Baum 888 (holo-: B†, iso-: BM! [barcode BM001209287], COI!, HBG! [barcode HBG507223], K! [barcode K000240364], M, W! [barcode W1901-0006479], Z! [barcode Z-000015505].).

Small tree 4–10(–15) m high; branchlets yellowish brown or blackish-velutinous. Leaf: petiole 10–30 mm long, ca. 3 mm in diameter; blade ovate to ovate-elliptic or oblong, 6–14(–20) × 3–8(–12) cm, rounded to slightly cordate at the base, more rarely cuneate, apex obtuse to acute or acuminate and mucronate, often bronze coloured in herbarium, generally discolorous; lateral nerves in 12–18 pairs, nearly straight, incurving at the apex, reaching the margin of the leaf; upper surface scaberulous, harsh to the touch, with straight or nearly straight stiff isolated hairs of 0.4–1 mm, generally persistent, sometimes with a layer of short stellate hairs; lower surface fulvous- (more rarely grayish-) cottony-lanose-tomentose with long curled hairs on the nerves and reticulation and with the interreticular areoles generally covered with minute stellate hairs; midrib and lateral nerves slightly depressed above and very prominent and strong beneath. Inflorescences of subsessile dense clusters or racemiform cymes, the uppermost ones more or less grouped at the end of twigs in a congested panicle (<6 cm) much shorter than the uppermost leaf, greyish- or brownishvelutinous-tomentose. Flower: pedicel 2–3 mm long; sepals ca. 3 mm long, densely sericeous-tomentose; petals ca. 9 mm long, densely sericeous-tomentose; stamens with connective produced into an inconspicuous appendage. Fruit subglobose, 8–10 mm in diam., densely sericeous-tomentose, conical at the apex; wings generally broadly obovate to spathulate, 3–4(–5) × 1.0–1.5(–2) cm, reddish purple.

Variation:— M. dasyanthus is very variable as to the thickness, colour and density of indumentum on the lower surface of the leaf, and presence/absence of stellate hairs on the upper surface. Three varieties can be recognized.