110. Guatteria oliviformis Donn.Sm. — Plate 6b, c; Map 25 Guatteria oliviformis Donn.Sm. (1897) 1; R. E.Fr. (1939) 521, f. 35b–f. — Type: Tonduz 1740 (lecto BR, selected by Fries 1939; isolecto CR, US), Costa Rica, Heredia, Volcán Barba, Río Segundo, 2000 m, 10 Jan. 1890. Tree 5–25 m tall, 10–50 cm diam; young twigs often zigzagging, densely covered with long-persisting, erect, brown hairs. Leaves: petiole 3–7 mm long, 1–2 mm diam; lamina narrowly elliptic to narrowly obovate, 10–20 by 3–7 cm (leaf index 3–3.3), coriaceous to slightly chartaceous, rather densely to densely verruculose, dull, blueish green above, brown below, densely covered with erect, brown hairs along the primary vein above, becoming glabrous, densely covered with erect, brown hairs below, base acute to obtuse, apex acuminate (acumen 5–15 mm long), primary vein impressed to slightly raised above, secondary veins distinct, 8–12 on either side of primary vein, slightly raised above, smallest distance between loops and margin 1– 2 mm, tertiary veins inconspicuous, flat to slightly raised above, reticulate. Flowers in 1(–2)-flowered inflorescences in axils of leaves; pedicels 7–25 mm long, c. 1 mm diam, fruiting pedicels 30–40 mm long, c. 3 mm diam, densely to sparsely covered with erect, brown hairs, articulated at 0.2–0.5 from the base, bracts 5–7, soon falling, very rarely foliaceous and elliptic, to c. 60 mm long; flower buds depressed ovoid; sepals free, very broadly to shallowly ovate-triangular, 5–7 by 5–9 mm, reflexed, outer side rather densely to sparsely covered with appressed, whitish hairs; petals yellowish green or yellow in vivo, ovate to elliptic, 12–16{–25} by 7–10{–15} mm, outer side densely covered with appressed and erect, whitish hairs; stamens 2–2.5 mm long, connective shield papillate. Monocarps 10– 50, maturing purplish black in vivo, black in sicco, ellipsoid, 9 –16 by 6 –11 mm, somewhat wrinkled, glabrous, apex rounded to apiculate (apiculum <0.5 mm long), wall c. 0.5 mm thick, stipes 3–7 by 1–2 mm. Seed ellipsoid, 9–12 by 6–7 mm, dark brown, rugose, raphe not distinct from rest of seed. Distribution — Costa Rica, Panama. Habitat & Ecology — In low, montane cloud forest. At elevations of (0–) 700–2200 m. Flowering: throughout the year; fruiting: February, May, September to November. Vernacular name — Costa Rica: Anonillo (Tonduz 1740). Notes — Guatteria oliviformis could be confused with G. costaricensis. For differences see under the latter. Several collections from La Amistad, Costa Rica (Angulo 374, Chinchilla 181, Acosta 2411) are somewhat aberrant from typical G. oliviformis because they lack verrucose leaves. They do match, however, the description of G. oliviformis in all other aspects.

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 121, DOI: 10.3767/000651915X690341, http://zenodo.org/record/16855128