Guatteria ouregou (Aubl.) Dunal — Plate, 1817

112. Guatteria ouregou (Aubl.) Dunal — Plate View in CoL 6d, e; Map 25

Guatteria ouregou (Aubl.) Dunal (1817) View in CoL 126; R.E.Fr. (1939) 352, f. 7, t. 20. — Cananga ouregou Aubl. (1775) View in CoL 608, t. 244. — Uvaria monosperma Lam. (1785) View in CoL 596. — Type: Aublet’s table 244 (lecto,here selected), French Guiana, Sinnamary (‘in sylvis remotis Sinemariensibus’), as no herbarium material attributable to Aublet could be traced.

Unona crassipetala Dunal (1817) View in CoL 101, t. 24. — Unona pachypetala Spreng. (1825) View in CoL 637. — Type: Anonymous collector s.n. (holo G), French Guiana, without location.

Unona fuscata DC. ex Dunal (1817) View in CoL 102. — Type: Martin s.n. (holo G; iso BM), French Guiana, without location.

Guatteria podocarpa DC.ex Dunal (1817) View in CoL 127. — Guatteria podocarpa DC. ex Dunal var. oligocarpa DC. (1817) View in CoL 503. — Type: Anonymous collector s.n. (holo G), French Guiana (‘Cayennà’), without location.

Guatteria podocarpa DC. ex Dunal var. polycarpa DC. (1817) View in CoL 503. — Type: Anonymous collector s.n. (holo G), French Guiana (‘Cayennà’), without location.

Guatteria ouregou (Aubl.) Dunal var. latifolia Sagot (1881) View in CoL 138. — Type: not seen.

Tree 2–10(–15) m tall, 2.5–15 cm diam;young twigs densely cov- ered with erect, dark brown hairs to c. 2 mm long, soon glabrous. Leaves: petiole 3–6 mm long, 1–3 mm diam; lamina narrowly elliptic, 14–28 by 4–8 cm (leaf index 2.3–3.5), chartaceous, not verruculose, dull, brownish, sometimes greyish above, brown below, glabrous above, except for some hairs along primary vein, rather densely covered with erect, dark brown hairs below, soon becoming glabrous, except for primary and secondary veins, base obtuse, sometimes acute, apex acuminate (acumen 5–15 mm long), primary vein impressed above, secondary veins distinct, 11–15 on either side of primary vein, impressed above, smallest distance between loops and margin 3–5 mm, tertiary veins flat to slightly raised above, percurrent to reticulate. Flowers in 1(–3)-flowered inflorescences in axils of leaves or on leafless branchlets; pedicels 10–20 mm long, 1–1.5 mm diam, fruiting pedicels 15–25 mm long, 1.5–3.5 mm diam, densely covered with erect, dark brown hairs to c. 2 mm long, articulated at 0.2–0.5 from the base, bracts 4–6, soon falling, the lowermost bract very broadly to transversely ovate, 1–1.5 mm long, the middle one (only one seen) elliptic, c. 2 mm long, uppermost bract not seen; flower buds depressed ovoid; sepals free, broadly ovate-triangular, 6–10 by 5–8 mm, finally reflexed, outer side verruculose, densely covered with erect, dark brown hairs to c. 2 mm long, soon becoming sparsely hairy; petals orange or yellow-orange in vivo, oblong-elliptic to narrowly triangular, 15–35 by 6–12 mm, outer side densely covered with appressed hairs; stamens 1.5–2 mm long, con- nective shield papillate. Monocarps 20–40, green, maturing wine-red to black in vivo, black in sicco, ellipsoid, 8–15 by 5–10{–14} mm, subglabrous, apex rounded to slightly apiculate (apiculum <1 mm long), wall 0.3–0.6 mm thick, stipes 15–35 by c. 1 mm. Seed ellipsoid, 8–10 by 5–6 mm, dark brown, pitted to transversely grooved, raphe not distinct from rest of seed.

Distribution — French Guiana.

Habitat & Ecology — In non-inundated, primary or second- ary forest, on lateritic to sandy soil. At elevations of 0– 200 m. Flowering: September to March; fruiting: September to Febru- ary.

Vernacular names — French Guiana: Corossol sauvage (Creole name), Ïwi (Wayãpi name), Kiriksau (Palikur name) (Grenand 2079), Mamanyaoué (Creole name), Mamanyaoui (Creole name) (BAFOG 1051), Mamayawé (Creole name), Ouregou (Carib name; Aublet (1775): ‘Cet arbre est nommé OUREGOU par les Galibis’).

Note — Guatteria ouregou is a species apparently endemic to French Guiana; it can immediately be recognized by the combination of brown, erect hairs on most of its vegetative parts, relatively large monocarps and orange to yellow-orange petals.