38 X. DIOSCOREACES. [Dioscorec 
blade, the petiole and under surface of the leaf similarly hairy to 
the stem, upper face of leaf glabrescent ; a bulbil sometimes occurs 
in the axil of the uppermost leaves ; male spikes simple, in axillary 
fascicles of 2 to 4, equal to or slightly exceeding the leaves ; 
peduncle, bracts, bracteole, and back of sepals similarly stellately 
tomentose ; flowers solitary, subsessile, bracts small shorter than 
the flower, ovate-acuminate, bracteole similar but half the size; 
perianth cyathiform, segments subequal, 3 outer oval to oval- 
oblong, concave, blunt, 3 inner glabrous, rather broadly oval, 
blunt, flat, with a fleshy median keel along the upper (inner) 
face; stamens 6 all fertile,’ the inner twice the length of the 
outer ; outer 3 short sharply kneed and bent inwards below the 
anther insertion, anther globose with a short apical dorsal 
recurving spur, inner 3 suberect with a less prominent dorsal 
knee below the anther which is only half the size of the outer 
and has a smaller spur; gyncecium represented by 3 linear- 
subulate subtriquetrous processes united at the base, and a little 
shorter than the inner stamens. 
Leaf-blades on a flowering branch diminishing upwards from 
3 in. to 3 in. in length, and becoming more shallowly cordate, 
the petioles from 23 to } in.; male spikes 6 in. or shorter ; flowers 
a little over 1 line long, whitish, slightly fragrant, bracts 4 line ; 
perianth-segments scarcely 1} line long, outer stamens } line, 
inner 2 line, carpel rudiments $ line. 
Near D. hirtiflora Benth. (of the Niger region), from which it 
differs in its ferruginous indumentum, and the fertility of both 
whorls of stamens, as well as in other points of floral structure. 
GoLtunco ALTo.—Woody thickets Monte de Queta above N-delle, 
but rare. In fl. April 1856. No. 4039. 
The following specimen consisting of leaves only probably 
belongs here :— 
Ampaca.—A climber with the habit of Dioscorea ; one specimen 
only was found and without flower. In woods of Araliacez near the 
river Lucala ; Oct. 1856. No. 4034. 
4, D, sativa L. Sp. Pl. p. 1033 (1753); Welw. Apont. p. 543; 
Durand & Schinz, lc. 
Dz bulbifera L., le. Helmia bulbifera Kth. Enum. v. p. 435 (1850). 
GoLuNGo ALTo.—Suffruticose rarely shrubby, stems 10 to 20 ft. 
long, cord-like, very high climbing, then hanging, bulbiferous. On 
palms (Eleis, Raphea) and other trees by the banks of the Delamboa. 
In fi. and fr, April 1856. No, 4037. The following number in Cott. 
Carp. may belong to this species. Aérial axillary tubercles of some 
Dioscorea. "Thrown up in the woods of Golungo Alto by the river 
ese sai 1856. 1012. 
AZENGO,—Openings of woods near the swee i 
destroyed by cattle. Sen, 1855. No. 4033. a aaa 
Loanpa.—Leaves only. No. 4031. 
i ee ee crm a with edible tubers and bulbils in the 
eaf-axils. oods on the river Bengo near 8. io. i - 
Jan. 1854, No. 4032. Pena reratniiae? Manes 
