Guatteria tomentosa Rusby — Plate, 1910

163. Guatteria tomentosa Rusby — Plate View in CoL 8e, f; Map 36

Guatteria tomentosa Rusby (1910) View in CoL 504; R. E.Fr. (1939) 348, t. 18. — Type : R.S. Williams 753 (holo NY), Bolivia, La Paz, Tumupasa, 500–600 m, 11 Dec. 1901 .

Guatteria trichoclonia Diels (1931) View in CoL 77; R. E.Fr. (1939) 347, t. 17. — Type: Buchtien 698 (holo B; iso F, S, US), Bolivia, La Paz, Mapiri, San Carlos, 24 Nov. 1926 .

Guatteria setosa Rusby (1934) View in CoL 55. — Type: Tate 1138 (holo NY; iso NY), Bolivia, La Paz, Chuquini, 1000 m (‘3000 ft’), 17–19 April 1926.

Guatteria sp. 14 Chatrou et al. (1997) 111.

Tree or sometimes a shrub 2–20(–25) m tall, to c. 30 cm diam; young twigs densely covered with long-persisting erect, brown, stiff hairs (‘hirsute’) to c. 3 mm long. Leaves: petiole 2 – 5 mm long, 1–3 mm diam; lamina narrowly ovate to narrowly obovate, sometimes elliptic, 7–23 by 2–6 cm (leaf index 1.9–5.5), chartaceous, not verruculose, dull, brown, greyish green or black above, brown or greenish below, sparsely to densely covered with erect, brown, stiff hairs (‘hirsute’) to c. 3 mm long to gla- brous above, but primary vein mostly permanently hairy, densely covered with erect, brown, stiff hairs (‘hirsute’) to c. 3 mm long below, base sometimes oblique, obtuse to cordate, sometimes acute or even stem-clasping, basal margins often revolute, apex acuminate (acumen 5–35 mm long), rarely acute, obtuse, or even emarginate, primary vein impressed to flat above, secondary veins distinct, 6 –15 on either side of primary vein, flat to raised above, smallest distance between loops and margin 2–3 mm, tertiary veins raised above, reticulate. Flowers solitary in axils of leaves or sometimes on leafless branchlets; flowering and fruiting pedicels 10–50(–70) mm long, 1–3 mm diam, densely covered with long-persisting erect, brown, stiff hairs (‘hirsute’) to c. 3 mm long, articulated at 0.1–0.4 from the base, bracts 5 –6, soon fallling or sometimes persisting, the uppermost bracts sometimes foliaceous, narrowly elliptic, 6– 20 mm long, the basal ones rarely more or less foliaceous, very broadly ovate, 4–5 mm long; flower buds depressed ovoid, slightly pointed; sepals free, broadly ovate-triangular, 5–13 by 5–10 mm, appressed, but finally reflexed, outer side densely covered with long-persisting erect, brown, stiff hairs (‘hirsute’) to c. 3 mm long; petals green, maturing yellow or cream in vivo, ovate-triangular to obovate or narrowly so, 15–30 by 6–15 mm, outer side densely covered with appressed and erect, greyish to brown hairs; stamens 1–2 mm long, connective shield glabrous. Monocarps 10–75, green, maturing purple-black to black in vivo, black or brown in sicco, ellipsoid, 6–10 by 3–7 mm, sparsely covered with erect to appressed hairs to glabrous, apex apiculate (apiculum 0.5–1 mm long), wall 0.1–0.2 mm thick, stipes 4–20 by 0.5–1 mm. Seed ellipsoid, 6–10 by 3–5 mm, dark brown, pitted, raphe raised.

Distribution — Honduras, Nicaragua, Costa Rica, Panama, Colombia (Antioquia, Boyaca, Chocó, Cundinamarca), Ecua- dor (Morona-Santiago, Napo, Sucumbios), Peru (Amazonas, Cusco, Huánuco, Junín, Madre de Dios, Pasco, San Martín , Ucayali), Brazil (Acre,Amazonas, Bahia, Espírito Santo, Minas Gerais), Bolivia (Cochabamba, La Paz, Pando).

Habitat & Ecology — In primary or secondary, non-inundated forest or periodically inundated forest, rarely in low cloud forest, on clayey to sandy soil. At elevations of 0–1700 m. Flowering: throughout the year; fruiting: mainly from July to December.

Vernacular names — Bolivia: Piraquina (Killeen 4450), Piraquina de barbecho (Meneces 607), Piraquina peluda de bar- becho (Hartshorn & Meneces 2332). Brazil: Envira-da-folha-peluda (Waltier et al. 11). Peru: Gana vara (Schunke V. 10026), Millua hicoja (Schunke V. 7427).

Notes — Guatteria tomentosa is very well recognizable by the long-persistent indument of erect, stiff hairs, pointed flower buds and long sepals of 5–13 mm long. The leaf base of this species is extremely variable. It goes from obtuse, cordate to even stem-clasping, and is often oblique. It could be confused with G. hirsuta , but from that species it differs by its erect instead of erect and appressed indument on most parts of the plant, and by often revolute basal leaf margins.

Three collections from Chocó, Colombia (Espina Z. et al. 2975 (MO, U), García C. & Agualimpia 376 (MO, U) and Ramirez & Evans 3993 (JAUM) are aberrant in having much larger leaves (18–20 by 7 cm) and by having densely hirsute and strongly pointed monocarps. They possibly represent an undescribed species.