Hypselodelphys triangularis Jongkind, 2008

Jongkind, Carel C. H., 2008, Two new species of Hypselodelphys (Marantaceae) from West Africa, Adansonia (3) 30 (1), pp. 57-62 : 58-59

Hypselodelphys triangularis Jongkind , sp. nov.

( Fig. 2 )

A Hypselodelphyde violacea (Ridl.) Milne-Redh. differt internodiis inflorescentiae aliquantum brevioribus et costa folii subtus glabra praeter basim.

TYPUS. — Côte d’Ivoire. 24 km W of Sassandra , 31.X.1968, Breteler 5876 (holo-, WAG; iso-, B, BR, C, MO, P, US).

PARATYPES. — Liberia. Tapeta , Blepie road, few miles SW of town , 12.I.1967, Bos 2713 (WAG). — Road Tappita- Tchien, 21.I.1964, van Harten 254 (WAG).

Côte d’Ivoire. 8 km SSW of Kpata-Aidou , 9. V .1975, Beentje 118 ( WAG). — Soubré, 21. VI .1907, Chevalier 19144 ( P). — Along the road from Sassandra to Monogaga, 12.IV.1973, de Koning 1448 ( K, WAG). — Road from Sassandra to Monogaga, 12.IV.1973, de Koning 1466 ( WAG). — Near Louga, behind Fuyt plantation, 12.XI.1973, de Koning 2700 ( K, MO, WAG). — C . 34 km N of Sassandra , c . 2 km W of Kokolo-Pozo , 19. VI .1963, W . de Wilde 292 ( BR, K, P, WAG). — FC Niégre , E of Keitadougou , 23.III.2000, Jongkind, Hawthorne & Assi- Yapo 4671 ( WAG) . — 5 km N of Sassandra , 19.XII.1958, Leeuwenberg 2258 ( WAG). — Taï NP , 7 km E of Research Station , 15.XI.1986, van der Maesen 5275 ( BR, G, K, MO, P, WAG) .

Ghana. Asafo road junction, 26. V .1954, Morton A 249 ( GC, K) .

Togo. Danyi Plateau , between Dzogbégan and Bago, 15.II.1978, Ern 3153 ( K) .

DESCRIPTION

Small liana scrambling up to 5 m high in vegetation. Leaves slightly asymmetric; blade very variable in size, 3.5-12.5 × 2-4 cm, with some hairs at the base below otherwise glabrous. Inflorescence terminal, simple or branched at base, up to 17 cm long, with internodes c. 5 mm long with the surface still easily visible through the indumentum of half-erect short hairs; bracts c. 2 cm long. Flower white with pink or violet, equal to the flowers of the other species in the genus. Fruit yellow and green, strongly acute three-lobed, flattened, muricate, 4 cm wide, with 3 large seeds.

HABITAT AND DISTRIBUTION

Regrowth in wet evergreen forest from Liberia to Togo ( Fig. 3 ).

Figures

FIG. 2. — Hypselodelphys triangularis Jongkind: A, leaf; B, leaf base from beneath; C, fruit from beneath; D, fruit from above. A, B, Breteler 5876; C, D, van der Maesen 5275. Scale bars: A, 1 cm; B, 1 mm; C, D, 5 mm.

FIG. 3. — Distribution map of the new species: ●, Hypselodelphys triangularis Jongkind; ▲, H. velutina Jongkind.