Artabotrys dielsianus Le Thomas, Adansonia ser . 2, 9: 442, 1969
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publication ID |
https://dx.doi.org/10.3897/phytokeys.207.61432 |
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DOI |
https://doi.org/10.5281/zenodo.7228563 |
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persistent identifier |
https://treatment.plazi.org/id/C0B7F7A7-5C29-9933-7561-0D89ED300726 |
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treatment provided by |
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scientific name |
Artabotrys dielsianus Le Thomas, Adansonia ser . 2, 9: 442, 1969 |
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Artabotrys dielsianus Le Thomas, Adansonia ser. 2, 9: 442, 1969
Figs 13 View Figure 13 , 14 View Figure 14 ; Map 2D View Map 2
Type.
Cameroon. South Region; Bipindi, Zenker G.A. 510, 1 Jan 1914: lectotype, sheet here designated: P[P00363381]; isotypes: B[B 10 0153019]; BR[BR0000008820693]; P[P00363377]; U[U 0000237]; WAG[WAG0000084,WAG0000085] .
Description.
Liana, height unknown, d.b.h. unknown. Indumentum of simple hairs; old leafless branches pubescent, young foliate branches tomentose to densely pubescent with long, up to 2 mm, ferruginous hairs. Leaves: petiole 2-3 mm long, 1-2 mm in diameter, densely pubescent, grooved, blade inserted on top of the petiole; blade 15-24 cm long, 6-7 cm wide, elliptic, apex acuminate to acute, acumen 0.5-1 cm long, base subcordate, coriaceous, below densely pubescent when young and old, above sparsely pubescent when young, glabrous when old, concolorous; midrib impressed, above glabrous or sparsely pubescent when young, glabrous when old, below densely pubescent when young and old; secondary veins 13 to 16 pairs, glabrous above; tertiary venation reticulate. Individuals bisexual; inflorescences, ramiflorous on old leafless branches, generally without leaves, leaf opposed. Flowers with 9 perianth parts in 3 whorls, 10 to 15 per inflorescence, hook-shaped peduncle 12-17 mm long; pedicel 3-4 mm long, ca. 1 mm in diameter, densely pubescent; bracts ca. 2, all basal, basal bracts 5 mm long, 4 mm wide; sepals 3, valvate, free, 5-12 mm long, 3-7 mm wide, triangular, apex acute, base truncate, densely pubescent outside, glabrous inside, margins flat; petals free, sub equal; outer petals 3, 20-35 mm long, 6-10 mm wide, elliptic, apex acute, base broad and concave, margins flat, densely pubescent outside, glabrous inside; inner petals 3, valvate, 15-25 mm long, 6-9 mm wide, elliptic, apex acute, base broad and concave, margins flat, densely pubescent outside, pubescent inside; stamens 50 to 70, in 3 to 4 rows, 1-2 mm long, cuneiform; connective discoid, pubescent; staminodes absent; carpels free, 25 to 32, ovary 1-2 mm long, stigma cylindrical, glabrous. Fruits unknown.
Distribution.
endemic to Cameroon; known from the South region.
Habitat.
Rare species; in primary lowland rain forest. Altitude 0-200 m a.s.l.
Local and common names known in Cameroon.
None recorded.
IUCN conservation status.
Not evaluated.
Uses in Cameroon.
None recorded.
Notes.
Artabotrys dielsiana is characterized by its densely pubescent young foliate branches with longish ferruginous hairs, leaf blades with a subcordate leaf base and pubescent below but glabrous above (including the midrib), and tightly packed flowers mainly borne on leafless branches ( Le Thomas 1969a). This species has only been collected four times.
Specimens examined.
South Region: Lélé, 2.29°N, 13.34°E, 06 September 2013, Couvreur T.L.P. 453 (WAG,YA); Campo-Ma’an area 2.28°N, 9.866°E, 03 October 2001, van Andel T.R. 4128 (KRIBI,U,WAG); Bipindi, 3.08°N, 10.41°E, 01 January 1914, Zenker G.A. 2087 (WAG); Bipindi, 3.08°N, 10.42°E, 01 January 1914, Zenker G.A. 510 (B,P,U,WAG).
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