160. Guatteria talamancana N.Zamora & Maas — Plate 3g, h, 8d; Map 33 Guatteria talamancana N. Zamora & Maas (2000) 241,f. 1, 2. — Type: Aguilar & Morales 4453 (holo INB; iso K, MO, U), Costa Rica, San José, Cantón de Pérez Zeledón, Parque Nacional Chirripó, Cordillera de Talamanca, Finca Los Romeros, main trail, ‘Fila cementerio de la maquina’, 1700 m, 22 Jan. 1996. Tree 2.5–20 m tall, 15–30 cm diam; young twigs very densely covered with long-persisting, erect, brown hairs to c. 2 mm long. Leaves: petiole 2–5 mm long, 3–4 mm diam; lamina narrowly oblong-elliptic, sometimes narrowly obovate, 13–23 by 3.5–8 cm (leaf index 2.8–3), coriaceous, densely verruculose, dull, greyish to greyish brown above, brown below, glabrous above, but primary vein densely covered with erect, brown hairs, densely covered with erect, brown hairs below, base obtuse, basal margins often revolute, apex acuminate (acumen 5–15 mm long), primary vein flat to slightly raised above, secondary veins distinct, 7–17 on either side of primary vein, flat to slightly raised above, smallest distance between loops and margin 2–3 mm, tertiary veins inconspicuous, flat above, reticulate. Flowers solitary in axils of leaves; pedicels 15–30 mm long, c. 3 mm diam, fruiting pedicels 30–55 mm long, 5–6 mm diam, densely covered with erect, brown hairs, articulated at 0.2–0.3 from the base, bracts 1–2, foliaceous, 25–30 mm long, outer side densely covered with erect, brown hairs; flower buds conical, sepals basally connate, ovate-triangular to broadly ovate-triangular, 15– 20 by 10–15 mm, appressed, outer and inner side densely covered with erect, brown hairs; petals yellow or cream in vivo, ovate-oblong, 15– 25 by 10–12 mm, outer side densely covered with appressed, brown hairs; stamens c. 1.5 mm long, connective shield hairy. Monocarps 10–15, black in vivo, black in sicco, ellipsoid to ovoid, 20–30 by 18–20 mm, glabrous, apex apiculate (apiculum <0.5 mm long), wall 0.1–0.2 mm thick, stipes 2–3 by 2–3 mm. Seed ellipsoid, 8–11 by 5 –6 mm, dark brown, pitted to rugulose, raphe not distinct from rest of seed. Distribution — Costa Rica, Panama. Habitat & Ecology — In forest.At elevations of 1000–2000 m. Flowering: August, September, December; fruiting: March, April, December. Vernacular names — Not recorded. Note — Guatteria talamancana, a species occurring at high elevations up to 2000 m, can be recognized by its indument of long-persisting, very long, erect, brown hairs on most of its parts and by long sepals (15–20 mm long). It has been confused with G. elegantissima, from which it differs by its much larger sepals (15–20 vs 5–7 mm) and monocarps (20–30 vs 5–8 mm), different leaf shape and size, and its occurrence at higher elevations (1000–2000 m vs 0–350 m).

Published as part of 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), pp. 1-219 in Blumea 60 (1) on page 174, DOI: 10.3767/000651915X690341, http://zenodo.org/record/16855128