Guatteria vallensis Maas & Westra, 2015

167. Guatteria vallensis Maas & Westra View in CoL , sp. nov. — Fig. 70f View Fig , 82 View Fig , 83 View Fig ; Map 37

Foliis parvis angustis verruculosis petalisque angustis inaeqalis bene distincta. — Typus: Monsalve B.685 (holo U; iso CUVC, JAUM, MO), Colombia, Valle del Cauca, Bajo Calima, Concesión Pulpapel / Buenaventura , 100 m, 20 Feb. 1985 .

Tree 5–25 m tall, diam not recorded; young twigs rather densely covered with appressed to half-appressed hairs, soon glabrous. Leaves: petiole 3–7 mm long, c. 1 mm diam; lamina narrowly el- liptic, 8–11 by 2–3 cm (leaf index 2.8–4), chartaceous, densely or rarely sparsely verruculose, dull, dark brown to brown above, brown to green below, glabrous above, sparsely covered with appressed hairs, mainly along primary vein, below, base acute to attenuate, apex acuminate (acumen 5–10 mm long), primary vein impressed above, secondary veins distinct, 12 –15 on either side of primary vein, slightly raised above, smallest distance between loops and margin 3–4 mm, tertiary veins slightly raised above, reticulate. Flowers solitary in axils of leaves or on leafless branchlets; flowering and fruiting pedicels 25–40 mm long, 1–1.5 mm diam, sparsely covered with appressed hairs, articulated at 0.1–0.2 from the base, bracts 5–6, soon falling, not seen; flower buds not seen; sepals free, broadly ovate-triangular, 3–4 by 3–4 mm, reflexed, outer side rather densely covered with appressed hairs; petals green, maturing yellow or cream in vivo, unequal, narrowly oblong-elliptic, 13–25 by 3–8 mm, the inner ones half as long as the outer ones (always?), outer side rather densely to sparsely covered with appressed

Map 37 Distribution of Guatteria trichostemon (✸), G. ucayalina (£), G. vallensis (■), G. venezuelana (P) and G. venosa (u).

hairs; stamens c. 1.5 mm long, connective shield papillate to glabrous. Monocarps 20– 50, green in vivo, black in sicco, ellipsoid, 5–8 by 3–4 mm, sparsely covered with appressed hairs, soon glabrous, apex apiculate (apiculum <0.5 mm long), wall 0.1–0.3 mm thick, stipes 5–15 by 0.5–1 mm. Seed ellipsoid, 5–8 by 3–4 mm, dark, shiny brown, pointed, pitted to rugulose, raphe not distinct from rest of seed.

Distribution — Western Colombia (Chocó, Valle del Cauca).

Habitat & Ecology — In non-inundated, pluvial, primary or secondary forest, on yellow to yellowish grey clay or loam. At elevations of 0– 150 m. Flowering: January, February; fruiting: January, February, July, September, October.

Vernacular name — Colombia: Cargadero (Faber-Langendoen & Rentería A. 1375, Gentry et al. 48341, Monsalve B.325, 685).

Other specimens examined. COLOMBIA, Chocó, Quibdó-Guayabal road, 3–6 km N of Quibdó, 50 m, Gentry & Rentería A. 24148 (MO, U); trail from Tutunendo-Quibdó road to Tubadó, c. 14 km NE of Quibdó, 90 m, Gentry & Rentería A. 24474 (U); Mun. Quibdó, along road from Quibdó to Guayabal, Espina Z. et al. 1494 (U). Valle del Cauca, Bajo Calima Concesión, c. 15 km NW of Buenaventura, 1 km past Luchin/Lijal intersection, on Luchin/ Juanchaco area, 50 m, Faber-Langendoen & Rentería A. 1001 (U); Bajo Calima Concesión, c. 20 km N of Buenaventura, 2 km past Pulpapel Station at km 13 of main road, 50 m, Faber-Langendoen & Rentería A. 1375 (U); Bajo Calima Concesión, c. 25 km NW of Buenaventura, c. 9 km NW of San Isidro intersection on ‘Canalete’ near gate, 50 m, Faber-Langendoen & Hurtado 1695 (U); Bajo Calima, road to Juanchaco Palmeras, 50 m, Gentry et al. 48341 (CUVC, MO, U); Bajo Calima, Concesión Pulpapel/Buenaventura, 100 m, Monsalve B.325 (MO, U).

Notes — Guatteria vallensis characteristically is a small and narrow-leaved species with unequal and very narrow petals. The leaves vary from densely to sparsely verruculose.

In Monsalve B.685 ( MO), the isotype collection, the petals are strongly unequal, the outer ones being twice as large as the inner ones (25 by 8 vs 11 by 4 mm) .

We have not included the measurements of three sterile collections which are aberrant in having larger and relatively narrow leaves (13–16 by 2–4 cm) and a more attenuate leaf base.