Guatteria cuscoensis Maas & Westra, 2015

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 : 67

45. Guatteria cuscoensis Maas & Westra , sp. nov. — Fig. 31 ; Map 11

Ab omnibus speciebus peruvianis andicolis pedicellis longioribus differt. — Typus: Garcia C. et al. 984 (holo WAG;iso CUZ, USM), Peru, Cusco, Paucartambo, Kosñipata , San Pedro, 1650 m, 6 Sept. 2006 .

Tree 4–20 m tall, 10–15 cm diam; young twigs rather densely covered with appressed hairs, soon glabrous. Leaves: petiole 4–7 mm long, 1–2 mm diam; lamina narrowly elliptic, 9–15 by 3–5 cm (leaf index 2.4–3.5), chartaceous, not verruculose, dull, brown above and below, glabrous above, sparsely covered with appressed hairs below, primary vein rather densely so, base acute to slightly attenuate, apex acuminate (acumen 5–15 mm long), primary vein impressed above, secondary veins distinct, 8–12 on either side of primary vein, slightly raised above, smallest distance between loops and margin 2–3 mm, tertiary veins slightly raised above, reticulate. Flowers solitary in axils of leaves or on leafless branchlets; pedicels 30–60 mm long, 1–1.5 mm diam, fruiting pedicels to c. 2 mm diam, rather densely to sparsely covered with appressed hairs, articulated at 0.1–0.3 from the base, bracts 5–6, soon falling, exception- ally the upper one foliaceous, narrowly elliptic, c. 30 mm long; flower buds depressed ovoid; sepals basally connate or free, broadly ovate-triangular, 3–10 by 4–10 mm, appressed, outer side densely to rather densely covered with appressed hairs; petals pale green, maturing cream, creamy yellow, or beige in vivo, ovate, 15–20 by 8–9 mm, outer side densely covered with appressed, brown hairs; stamens c. 2 mm long, connective shield papillate. Monocarps 20–40, green, maturing reddish in vivo, brown in sicco, ellipsoid, 10–11 by 5.5–6 mm, glabrous, apex apiculate (apiculum 0.5–1 mm long), wall c. 0.2 mm thick, stipes c. 4 by 1 mm. Seed ellipsoid, c. 7 by 4 mm, brown, pitted, raphe not distinct from rest of seed.

Distribution — Peru (Cusco).

Habitat & Ecology — In montane primary or secondary, cloud forest, on rich soil. At elevations of 800–1750 m. Flowering: January, March, June, September; fruiting: July, September, October.

Vernacular names — Not recorded.

Other specimens examined. PERU, Cusco, Paucartambo, Kosñipata, San Pedro , 1650 m, 2 Sept.2006, Farfán R . et al. 2558 ( CUZ, USM, WAG);Pau- cartambo, Kosñipata, Callanga , 1250 m, 23–30 June 2008, Farfán R . et al. 4088 ( CUZ, USM, WAG); Paucartambo, Kosñipata, San Pedro , 1650 m, 1 Sept. 2006, Garcia C . et al. 946 ( CUZ, USM, WAG); Paucartambo, Kosñipata, San Pedro , 1650 m, 6 Sept. 2006, Garcia C . et al. 990 ( CUZ, USM, WAG); La Convención, Distr. Echarate, Kepashiato , Puguientimari-Pomoreni , 800 m, 24 Mar. 2007, Valenzuela et al. 9413 ( WAG); La Convención, Distr. Echa- rate, Puyentimari, 831 m, 23 Jan. 2008, Valenzuela et al. 10766 ( WAG); La Convención, Distr. Echarate, Cigakiato, 1000 m, 29 Jan. 2008, Valenzuela et al. 10962 ( WAG) .

Note — Guatteria cuscoensis occurs in the Peruvian Depart- ment of Cusco high in the tropical montane cloud forests of the Manu National Park, and near Kepashiato. It is recognizable from other Andean species of Guatteria by its relatively long pedicels and short stipes.

Figures

Fig. 31 Guatteria cuscoensis Maas & Westra. Flowering branch (Farfán et al. 4088, WAG).