Guatteria grandipes Maas & Westra

7. Guatteria grandipes Maas & Westra View in CoL

Guatteria grandipes Maas & Westra in Erkens et al. (2008) 497, f. 11. — Type: Stein et al. 4002 (holo MO; iso U), Peru, Loreto, Prov. Ramón Castilla, trail inland from Pucaurquillo, up Río Ampiyacu from Pebas , 140 m, 31 Jan. 1987.

Tree or shrub 4 –6 m tall, diam not recorded; young twigs densely covered with erect, rough, brown hairs (‘hirsute’) 1.5– 2.5 mm long. Leaves: petiole c. 5 mm long, 2–3 mm diam; lamina narrowly obovate to narrowly elliptic, 16– 23 by 4–7 cm (leaf index 3.3 – 4), coriaceous, densely verruculose, dull, brown to greenish brown above, brown below, glabrous above, densely cover- ed with erect, rough, brown hairs (‘hirsute’) 1.5 – 2.5 mm long below, base acute, apex acuminate (acumen 5–15 mm long), primary vein impressed above, secondary veins distinct, 15 – 25 on either side of primary vein, impressed to flat above, marginal vein present, smallest distance between marginal vein and margin 2 –3 mm. Flowers solitary in leaf axils; pedicels 70 –90 mm long, 1 mm diam, densely to rather densely covered with erect, rough, brown hairs (‘hirsute’) 1.5– 2.5 mm long, articulated at ≤ 0.1 from the base, bracts not seen; flower buds subglobose; sepals free, ovate, 11–12 by 6 mm, appressed, outer side densely covered with appressed, white hairs; petals greenish cream in vivo, young ones ovate, c. 14 by 8 mm, outer side densely covered with appressed, white hairs; stamens c. 2 mm long, connective shield densely papillate. Monocarps c. 15, green in vivo, brown in sicco, ellipsoid, 15–16 by 7 mm, rather densely covered with erect hairs, apex apiculate (apiculum < 0.2 mm long), wall 0.2– 0.3 mm thick, stipes 15–17 by 1 mm. Seed (young ones!) ellipsoid, c. 16 by 7 mm, pale brown, rugose.

Distribution — Peru ( Loreto).

Habitat & Ecology — In forest (the type collection from ‘swampy forest’), on lateritic soil. At elevations of 120 –140 m. Flowering: August; fruiting: January .

Vernacular names — None.

Note — Guatteria grandipes belongs in Fries’s sect. Mecocarpus because of its verruculose leaves, provided with a marginal vein. It differs from all species in this section by the extremely long pedicels up to 90 mm long!