Guatteria narinensis Maas & Westra, 2015

103. Guatteria narinensis Maas & Westra View in CoL , sp. nov. — Fig. 51 View Fig ; Map 24

Species foliis fuscobrunneis (in siccitate) basi acutis vel longe attenuatis dense verruculosis interdum plusminusve in lineis coalitis,pedicellis gracilibus pro ratione longis notabilis. — Typus: Maas et al. 6521 (holo U 2 sheets; iso COL, K, NY), Colombia, Nariño, 10 km before La Guayacana, 450 m, 10 June 1986 .

Guatteria sp. 11 Chatrou et al. (1997) 111.

Tree 6–25 m tall, to c. 50 cm diam; young twigs densely covered with appressed hairs, soon glabrous. Leaves: petiole 1–3 mm long, 1–2 mm diam; lamina narrowly elliptic, 10–19 by 2–4 cm (leaf index 4–6), chartaceous, densely verruculose, the warts often arranged in lines, dull, dark brown above, brown below, glabrous above, but primary vein densely to sparsely covered with erect hairs above, sparsely covered with appressed hairs to subglabrous below, but primary vein densely covered with appressed hairs, base acute to long-attenuate, apex acuminate (acumen 5–15 mm long), primary vein impressed above, secondary veins indistinct, 15– 20 on either side of primary vein, flat to slightly raised above, smallest distance between loops and margin 1–2 mm, tertiary veins flat above, reticulate. Flowers solitary in axils of leaves; pedicels 25–45 mm long, 1–2 mm diam, fruiting pedicels c. 45 mm long, c. 2 mm diam, rather densely covered with appressed hairs, articulated at 0.2–0.4 from the base, bracts 4–6, soon falling, uppermost bract (one seen) obovate, c. 4 mm long, a persisting foliaceous bract c. 20 mm long, seen on one pedicel, inserted just below the uppermost bract; flower buds depressed ovoid to ovoid; sepals free, broadly ovate-triangular, 5–6{–9} by 6–7{–10} mm, appressed, outer side densely to rather densely covered with appressed hairs; petals yellowish green or yellow in vivo, ovate, 12–14{–25} by 8–11{–18} mm, outer side densely (near the base) to rather densely covered with appressed hairs; stamens c. 2 mm long, connective shield papillate. Monocarps c. 40, colour in vivo not recorded, brownish in sicco, ellipsoid, {7–9} by {4–5} mm, sparsely covered with appressed hairs, apex apiculate (apiculum <0.5 mm long), wall {0.4–0.6} mm thick, stipes 5–6 by c. 1 mm. Seed ellipsoid, c. 7 by 4 mm, black, pitted, raphe not distinct from rest of seed.

Distribution — Western Colombia (Nariño), Ecuador (Carchi, Esmeraldas).

Habitat & Ecology — In non-inundated, primary or secondary forest, on clayey soil with boulders.At elevations of 250– 450 m. Flowering: March, June; fruiting: March, June.

Vernacular names — Ecuador: Guarea negra (C. & M. Aulestia 1251), Palay ( Játiva 323).

Other specimens examined. ECUADOR, Esmeraldas, San Lorenzo,Reserva Etnica Awá, Parroquia Alto Tambo, Centro de la Unión, Cañón del Río Mira, 250 m, C. & M. Aulestia 1251 (U); Tobar Donoso, 225 m, Játiva 323 (NY); Tobar Donoso, junction of Río San Juan and Rio Cabumbi, 150 m, Játiva & Epling 1126 (MO, NY); border area between provinces Carchi and Esmeraldas, 30 km past Lita, on road from Lita to Alto Tambo, 450 m, Van der Werff et al. 12128 (MO, U).

Note — Guatteria narinensis is very easily recognizable by narrow, densely verruculose leaves, which become brown to dark brown upon drying, and by relatively long pedicels up to c. 45 mm long.