Hypselodelphys velutina Jongkind, 2008

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

Hypselodelphys velutina Jongkind , sp. nov.

( Figs 4 ; 5 )

A Hypselodelphyde poggeana (K.Schum.) Milne-Redh. differt indumento confertim velutino in pagina extra bractearum et in internodiis inflorescentiae.

TYPUS. — Liberia. Grand Cape Mount, in MMAL mine area, on slope of the mine, 14.II.1970 , J. W. A. Jansen 1846 (holo-, WAG; iso-, BR, MO).

PARATYPES. — Sierra Leone. Mt Leicester , V .1857, Barter s.n. ( K). — Kangahun , 7.II.1953, Deighton 6020 ( K, P). — Lake Sonfon, 14.II.1966, Gledhill 446 ( K). — Près Kania, vers Mt Loma, 27. I .1966, Jaeger 9102 ( K). — Piémont W Loma , II.1966, Jaeger 9181 ( P). — Gbinti, Dibia, 4.II.1955, H . D. Jordan 988 ( K). — Tingi Mountains , on main plateau near camp, 12.IV.1965, Morton & Gledhill SL 1857 ( K, WAG). — Koyema, N Kono , foot of Tingi Hills, 12.IV.1965, Morton & Gledhill SL 1960 ( K, WAG). — Kennema, 20. I .1914, N. W . Thomas 7748 ( K) .

Liberia. Nimba, 3.II.1965, J . G . Adam 20826 ( K) . — Nimba, I .1970, Blyden 935 ( WAG). — Duport, c. 8 miles E of Monrovia, 2.XI.1966, Bos 2304 ( WAG). — 19 miles E of Bomi Hills , along the road to Bopulu , 13.II.1969, J . W . A. Jansen 1542 ( MO, WAG). — E slope of Putu Hills East Range, W of Tiama Town , 31. V .2005, Jongkind, Kwewon & Kpadeyeah 6544 ( WAG)

Côte d’Ivoire. Mount Tonkoui , 9.II.1961, H . C . D. de Wit 9150 ( WAG). — Mount Tonkoui , 30.III.2000, Jongkind, Hawthorne & Assi-Yapo 4839 ( WAG) .

DESCRIPTION

Liana scrambling up to 10 m high in vegetation. Leaves slightly asymmetric; blade very variable in size, 2.2-11 × 5-25 cm, with some hairs close to the midrib beneath but otherwise glabrous.Inflorescence terminal, simple or branched at base, up to 12 cm long, with internodes c. 5 mm long with the surface hiding beneath a dense cover of half-erect short hairs; bracts 1.7-2 cm long, dense velutinous on the outside.Flower white, sometimes with yellow and violet, more or less equal to the flowers of the other species in the genus.Fruit yellow and green, three-lobed with rounded corners, muricate, with 3 large seeds.

HABITAT AND DISTRIBUTION

Wet evergreen forest from Sierra Leone to Côte d’Ivoire ( Fig. 3 ).

REMARKS

The habit of Hypselodelphys triangularis is principally the same as that of H. velutina as shown in the Figure 4 .

Figures

FIG. 4. — Hypselodelphys velutina Jongkind:A, habit,with all leaves on short shoots;B, leaf;C, leaf base from beneath;D, detail of inflorescence branch; E, fruit from beneath. A-D, Bos 2304; E, J.W.A. Jansen 1846. Scale bars: A, 2 cm; B, 1 cm; C, D, 1 mm; E, 5 mm.

FIG. 5. — Hypselodelphys velutina Jongkind: A, fruit; B, flowers. Jongkind 8024.

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