Guatteria flagelliflora Maas & Westra

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 : 85

66. Guatteria flagelliflora Maas & Westra — Map 15

Guatteria flagelliflora Maas & Westra in Erkens et al. (2008) 486,f. 8. — Type: Vásquez et al. 22500 (holo U 2 sheets; iso F, MO, WAG 2 sheets), Peru, Amazonas, Prov. Condorcanqui, Distr. El Cenepa, Mamayaque, Río Ce- nepa, Cerro Sakee gaig, 900–1000 m, 12 Feb. 1997.

Tree c. 25 m tall, diam not recorded; young twigs sparsely covered with appressed hairs, soon glabrous, black. Leaves: petiole c. 10 mm long, 2 mm diam; lamina narrowly elliptic to narrowly obovate, 23–32 by 9–10 cm (leaf index 2.6–3.6), chartaceous, not verruculose, blackish brown above, brown below, glabrous above, sparsely covered with appressed hairs below, base acute, apex obtuse to acuminate (acumen c. 15 mm long), primary vein flat above, secondary veins distinct, 12–16 on either side of primary vein, slightly raised above, smallest distance between loops and margin 2–4 mm, tertiary veins raised above, reticulate. Flowers in condensed panicle-like inflorescences (length not mentioned) on leafless sprouts from the stem; pedicels 15–17 mm long, c. 1.5 mm diam, young fruiting pedicels 15–30 mm long, 2–3 mm diam, densely covered with appressed hairs, articulated at c. 0.2 from the base, bracts 5–6, soon falling, not seen; flower buds depessed ovoid; sepals free, broadly ovate, 5–7 by 4–6 mm, appressed, outer side densely covered with appressed hairs; petals green in vivo, outer ones elliptic to elliptic-ovate, 15 –20 by 10–15 mm, inner ones broadly to very broadly elliptic-ovate, 10–15 by 10–12 mm, outer side densely covered with appressed hairs; stamens 1.5–2 mm long, connective shield papillate to hairy. Monocarps 25–50, black in vivo, black in sicco, ellipsoid, 8–10 by 4–5 mm, wrinkled in sicco, glabrous, apex apiculate (apiculum <1 mm long), wall 0.1–0.2 mm thick, stipes 5–8 by c. 1 mm. Seed ellipsoid, 9–10 by 4–6 mm, dark brown, rugose, raphe not distinct from rest of seed.

Distribution — Amazonian Peru (Amazonas).

Habitat & Ecology — In primary forest. At elevations of 900–1000 m. Flowering: February; fruiting: February.

Vernacular names — Not recorded.

Note — Guatteria flagelliflora is unique by its flagelliform inflorescence, a feature not reported so far in Guatteria .