Guatteria lucens Standl. — Plate, 1935

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 : 105

91. Guatteria lucens Standl. — Plate 5d–f; Map 21

Guatteria lucens Standl. (1935) 22; R. E.Fr. (1939) 481, t. 34. — Type: Cooper 280 (holo F; iso F 2 sheets, G, GH, MO, US), Panama, San Blas , Perma, 27 Apr. 1933 .

Guatteria dumetorum R.E.Fr.(1948b) 12,pl. 5. — Type: Pittier 3915 (holo US 2 sheets; iso F), Panama, Colón, along Río Fato , 10–100 m, 8 July 1911.

Tree 8–38 m tall, 20–60 cm diam; young twigs densely to sparsely covered with appressed hairs, soon glabrous. Leaves: petiole 5–11 mm long, 1–2 mm diam; lamina narrowly elliptic to narrowly obovate, 10–21 by 2–6 cm (leaf index 3.5–5), chartaceous, densely or not verruculose, shiny, grey to greyish brown above, brown to greyish brown below, glabrous above, sparsely, sometimes rather densely covered with appressed hairs below, base long-attenuate, basal margins often revolute, apex acuminate (acumen 5–15 mm long), primary vein impressed above, often keeled below, secondary veins distinct, 11–20 on either side of primary vein, raised above, smallest distance between loops and margin 2–4 mm, tertiary veins raised above, reticulate. Flowers in 1–3-flowered inflorescences in axils of leaves; pedicels 7–15 mm long, 0.5–1 mm diam, fruit- ing pedicels 10–35 mm long, c. 1 mm diam, densely, but soon sparsely covered with appressed hairs, articulated at 0.2–0.3 from the base, bracts 5– 6, soon falling, rarely third from above foliaceous; flower buds depressed ovoid; sepals free, broadly ovate-triangular, 2–5 by 2–4 mm, reflexed, outer side densely covered with appressed hairs; petals yellow, orange or greenish red in vivo, narrowly ovate to rhombic-ovate, 10–19 by 3–9 mm, outer side densely covered with appressed hairs; stamens c. 1 mm long, connective shield papillate. Monocarps 40–75, green, red to finally black in vivo, black in sicco, narrowly el- lipsoid to ellipsoid, 5–12 by 3–7 mm, rather densely to sparsely covered with appressed hairs, soon glabrous, apex apiculate (apiculum <1 mm long), wall 0.2–0.3 mm thick, stipes 5–20 by 0.5–1 mm. Seed ellipsoid, (5–)7–12 by 3–5 mm, dark brown, pitted, raphe raised.

Distribution — Costa Rica, Panama.

Habitat & Ecology — In primary, wet forest. At elevations of 0– 900 m. Flowering: January to March, May, July, September, October; fruiting: January, June, July, September, October.

Vernacular name — Panama: Sigui war (Kuna language) (DeNevers et al. 7578).

Notes — Guatteria lucens is well characterized by shiny leaves with a long-attenuate base, and by its prominent venation on the upper leaf side.

Most of the Costa Rican material of this species is characterized by non-verruculose to slightly verruculose leaves, and fits G. lucens fairly well. Most collections from Panama (especially those from Colón) and some specimens of the provinces of Puntarenas and Limón in Costa Rica, however, have distinctly verrucose leaves and fall within the concept of G. dumetorum . As all other features of these Panamanian collections fit G. lucens very well, for this moment – and with hesitation – we have united both species under the oldest name, namely G. lucens .

Figures

Plate 5 a, b. Guatteria jefensis Barringer. a. Flowering branch of dwarf tree; b. ripe flower (top), fruit (bottom). – c. Guatteria latifolia (Mart.) R.E.Fr. Flower bud. – d–f. Guatteria lucens Standl. d. Flowers; e. leaves; f. fruit. – g, h. Guatteria megalophylla Diels. – g. Flower; h. fruit. – i. Guatteria oblongifolia Rusby. Flowering branch (a: Maas et al. 9553; b: Cerro Jefe, Panama; c: Maas & Martinelli 3222; d; Maas et al. 9491; e: Maas et al. 9519; f: Chatrou et al. 705; g, h: Chatrou et al. 387; i: Homeier 4504). — Photos: a, c–e: P.J.M. Maas; b: J. Harrison; f–h: L.W. Chatrou; i: J. Homeier.