Campylospermum gabonensis subsp. gabonensis

subsp. gabonensis View in CoL — Fig. 2 View Fig ; Map 2

Tree or treelet, up to 7 m tall. Stipules persistent, narrowly triangular, 7–15 cm long. Leaves: petiole canaliculated above, 3–7 mm long; leaf blade narrowly elliptic to narrowly elliptic-obovate, 16–30(–35) by 6–10(–11) cm, base cuneate to tapering, apex acuminate or sometimes acute, thick leathery to coriaceous, margin serrulate or sometimes entire toward the base, rarely entire, upper surface flat or rarely bullate, dark green, lower surface paler green, both sides glossy, young leaves purplered; midrib flattened above, prominent below, main lateral veins 6–23 mm apart, 14–27 on either side, prominent on both sides, curved upward to run parallel to the margin, intermediate lateral veins not to slightly prominent on both sides, 0– 2 in between each pair of main laterals, tertiary venation scalariform, running perpendicular to the midrib, indistinct on the upper side, slightly distinct on the lower. Inflorescences terminal, unbranched, erect, compact, 3–13 cm long; peduncle robust; pairwise scales persistent at the base of the peduncle, narrowly triangular; bracts persistent at the base of the cymule, triangular, 2 –3 mm long; cymules 3–5(–10) mm apart, 4–8-flowered. Flowers: pedicel 5–15 mm, articulated at 3–9 mm from the base, pale green; sepals 5, ovate, in flower 7–9 by 2–3 mm, greenish, in fruit 9–10 by 3–4 mm, persistent and accrescent, red; petals 5, obovate, yellow, 10–15 by 5–9 mm, cuneate at base, rounded at apex; stamens 10, pale yellow, filaments less than 1 mm long, anthers 5–7 mm long, transversely wrinkled, poricidal; ovary c. 2 mm wide; style 6–7 mm long, curved. Fruits: receptacle a ± flattened-globose shape, 3–4 mm wide, red; drupelets 1–2 well developed per receptacle, ellipsoid, c. 7 by 5 mm, black at maturity; cotyledons incumbent, dissimilar in size with a smaller outer cotyledon.

Distribution — Endemic to Gabon (Moyen-Ogooué and Ngounié provinces).

Ecology — In primary and secondary forest, sometimes along rivers or streams; at 70–400 m altitude.

Phenology — Flowers observed from August to November and in April; fruits collected from October to January.

Preliminary IUCN conservation status — VU B1ab(ii, iii, iv). EOO = 4476 km 2, AOO = 2348 km 2, locations = 10 (cell width = 15.32 km). All known records of this taxon are from areas ex- posed to mining and/or logging activities rendering a projected decline in its AOO and/or quality of the habitat most likely and hence we propose the ‘Vulnerable’ category.

Additional material. GABON, Moyen-Ogooué: Azizet Issembé 176 ( LBV, WAG), Camp Mboumi, Base , c. S0°25' E10°50', 16 Aug. 1999 (fl); Breteler 10375 ( LBV, WAG), Missanga, 5–15 km NNW of Ndjolé, c. E0°05' E10°45', 11 Nov. 1991 (fl); Breteler 10983 ( WAG), 5–30 km NNW of Ndjolé, c. S0°05' E10°45', 21 Apr. 1992 (fl); Breteler 14655 ( WAG), M’Boumi, chantier SHM, c. 30 km S of Ndjolé, on border of the Ogooué river near Ndjolé , S0°25' E10°50', 17 Nov. 1998 (st); Breteler 14658 ( LBV, WAG), idem; Dibata 66 ( LBV, MO, WAG), ENE de Belle Vue , Layon ×, S0°35' E10°39', 23 Jan. 1987 (fl) GoogleMaps . Ngounié: Bissiengou 610 ( LBV, WAG), along a forestry road of chantier EFT (Exploitation Forestière de Tsanba) starting at Ndjemba village on Fougamou-Lambaréné road, S1°03.7' E10°28.6', 129 m, 29 Oct. 2009 (fl); Bissiengou 627 ( LBV, WAG), idem, S1°10.9' E10°28.4', 165 m, 29 Oct. 2009 (fl); Bissiengou 628 ( LBV, WAG), idem; Bissiengou 1432 ( LBV, WAG), Sindara , après village Matadi 7 route exploitation forestière EGG (ancien IFL), S1°02.76' E10°42.50', 72 m, 22 June 2011 (st); Bissiengou 1451 ( LBV, WAG), Fougamou , village Nzemba route du chantier forestier EGBD, entrée école, S1°03.06' E10°30.37', 97 m, 24 June 2011 (st); Bissiengou 1452 ( LBV, WAG), idem; Breteler 5725 ( WAG), 50 km SE of Lambaréné, c. S1°04' E10°30', 28 Sept. 1968 (fl); Breteler 14052 ( WAG), between Yombi and Fougamou, E slope of Koumounabouali ridge, c. S1°20' E10°40', 22 Sept. 1997 (st); Leeuwenberg 13617 ( WAG), right bank GoogleMaps Ngounié R., SE of Sindara,km 17 SW of Chantier Waka, S1°13' E10°49', 400 m, 22 Sept.1985 (fl); A.M. Louis 1324 ( WAG), 2–3 km SE of Forestry Camp Waka situated ± 32 km SE of Sindara, Waka R. Basin, c. S1°14' E10°53', 350 m, 12 Dec. 1983 (fr); Wieringa 4402 ( WAG), 2 km on the road branching off near Ikobey to Magonga, S1°01.67' E10°57.46', 200 m, 25 Nov. 2001 (fr) GoogleMaps .