Guatteria denudata R.E.Fr.

Maas, P. J. M., Westra, L. Y. T., Guerrero, S. Arias, Lobão, A. Q., Scharf, U., Zamora, N. A. & Erkens, R. H. J., 2015, Confronting a morphological nightmare: revision of the Neotropical genus Guatteria (Annonaceae), Blumea 60 (1), pp. 1-219 : 69-71

49. Guatteria denudata R.E.Fr. — Map 12

Guatteria denudata R.E.Fr. (1957b) 601; Maas & Westra (2010) 264, f. 6. — Type: Schultes & Cabrera R. 17374 (holo S; iso COAH, GH, NY, US), Colombia, Vaupés, Río Piraparaná, tributary of Río Apaporis, headwaters of Caño Teemeeña, 10 Sept. 1952.

Tree small (1.5 m) to medium-sized, diam not recorded; young twigs sparsely covered with appressed hairs or very soon glabrous. Leaves: petiole 5–15 mm long, 1–2 mm diam; lamina elliptic to narrowly elliptic, or narrowly oblong-elliptic, 7–15 by 3–6 cm (leaf index 1.7–2.8), coriaceous, not verruculose, shiny and dark brown above, brown below, glabrous above and below, base obtuse, extreme base slightly attenuate, apex acuminate (acumen 10–20 mm long), primary vein impressed above, secondary veins indistinct, 12 –15 on either side of primary vein (hardly countable), slightly raised above, smallest distance between loops and margin 2– 5 mm, tertiary veins flat to slightly raised above, reticulate. Flowers in 1(–2)-flowered inflorescences in axils of leaves or on leafless branchlets; pedi- cels 6–22 mm long, 1–1.5 mm diam, fruiting pedicels to c. 2 mm diam, articulated at 0.1–0.2 from the base, rather densely covered with appressed, brownish hairs to glabrous, bracts 4–5, soon falling, not seen; flower buds not seen; sepals free, broadly ovate-triangular, 3–4 by 4–6 mm, appressed, outer side sparsely covered with appressed hairs; petals green in vivo, narrowly oblong-elliptic to oblong-elliptic, 10–22 by 4–13 mm, outer base densely covered with appressed hairs, otherwise sparsely so; stamens 1.5–2 mm long, connective shield papillate. Monocarps 25–30, colour in vivo not recorded, dark brown to brown in sicco, ellipsoid, 8–9 by 3–4 mm, glabrous, apex rounded, wall c. 0.2 mm thick, stipes 2–3 by 1–1.5 mm. Seed ellipsoid, 8–9 by 4 mm, brown, rugose to pitted, raphe not distinct from rest of seed.

Distribution — Amazonian Colombia (Vaupés).

Habitat & Ecology — Vegetation type not recorded.At about sea level. Flowering: September; fruiting: September.

Vernacular name — Colombia: Feé-ka-no (Baras name) ( Schultes & Cabrera R. 17374).

Note — Guatteria denudata (included by R.E. Fries in sect. Pteropus ) is a poorly known species from 2 gatherings only. It is quite noteworthy by its very thick, shiny, glabrous leaves with an obtuse base, the extreme base being slightly attenuate.

Figures

Map 12 Distribution of Guatteria cuatrecasasii (●), G. denudata (£), G. discolor (■) and G. dolichopoda (P).