Guatteria reinaldii Erkens & Maas

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 : 142

132. Guatteria reinaldii Erkens & Maas — Map 28

Guatteria reinaldii Erkens & Maas in Erkens et al. (2006) 206, f. 4. — Type: R. Aguilar et al. 2031 (holo INB; iso U), Costa Rica, Puntarenas, Cantón de Osa, Fila Costeña, 2 km N of Piedras Blancas , near Cerro Anguciana , 900 m, 28 July 1993.

Tree 4–10 m tall, c. 12 cm diam; young twigs rather densely covered with appressed hairs, soon glabrous. Leaves: petiole 2–4 mm long, 1–2 mm diam; lamina narrowly ovate to narrowly elliptic and slightly falcate, 13–20 by 4–6 cm (leaf index 2.8– 3.3), chartaceous, sparsely or not verruculose, shiny, greyish green above and below, glabrous above, but primary vein densely covered with appressed to erect hairs (primary vein may look verrucose by remaining hair bases), sparsely to rather densely covered with appressed hairs below, base obtuse, apex acuminate (acumen 10–15 mm long), primary vein flat above, secondary veins distinct, 6 –10 on either side of primary vein, strongly raised above, smallest distance between loops and margin 3–5 mm, tertiary veins strongly raised above, reticulate. Flowers in 1–2-flowered inflorescences in axils of leaves; pedi- cels 3–5 mm long, c. 1 mm diam, fruiting pedicels to c. 7 mm long, to c. 3 mm diam, densely covered with appressed, dark brown hairs, articulation not observed, bracts 4–6, soon fall- ing; flower buds depressed ovoid; sepals free, broadly ovate-triangular, c. 6 by 6 mm, appressed, outer side densely covered with appressed, dark brown hairs; petals cream in vivo, broadly ovate-triangular, 8–14 by 8–11 mm, outer densely covered with appressed, dark brown hairs; stamens 2–2.5 mm long, connec- tive shield papillate. Monocarps <10, purple-black in vivo, black in sicco, narrowly ellipsoid, 10–14 by 4–8 mm, sparsely covered with appressed hairs, apex rounded to apiculate (apiculum <0.5 mm long), wall 1–1.5 mm thick, stipes 1–3 by c. 1 mm. Seed ellipsoid, c. 10 by 6 mm, pale brown, pitted, raphe not studied.

Distribution — Costa Rica.

Habitat & Ecology — In forest. At an elevation of c. 900 m. Flowering: July, December; fruiting: July, December.

Vernacular names — Not recorded.

Note — Guatteria reinaldii at first sight resembles G. pudica but its parts are generally smaller in size. Both species occur in the Osa area and probably are closely related.