Dioscoo'ea] x. dioscoreace.e. 37 



GoLUNGO Alto. — A very widely climbing herb, draping and hanging 

 from palms ; tubercles often but not always formed in the leaf -axils. 

 In palm woods on the river Quiapoza near Sange. Aprill855. Xo. 4038. 



2. D. andongensis Rendle sp. nov. 



A herb generally with a woody base, stera broadly winged and 

 furrowed, (in the llower-bearing shoots of which the herbariura 

 specimen consists, the stem is much twisted and furrowed but not 

 winged,) sparsely i'erruginously haii-y ; leaves alternate, exactly 

 cordate with a long apiculus, shorter than the internodes, leaf- 

 stalk generally shorter than the blade, sparsely puberulous, blade 

 9-nerved, the lowest nerve on each side giving off a strong 

 branch just above its base ; lower surface softly densely tomen- 

 tose on the flowering shoots, very thinly hairy on the single 

 fruit-bearing shoot ; male spikes simple, 4 in the axil of each 

 leaf, shorter than the leaf, peduncle, bracts and flower-buds with 

 a short dense ferruginous indumentum ; flowers solitary, bracts 

 triangular ovate, almost as long as the flowers, perianth broadly 

 cyathiform, segments subequal, outer ovate blunt, hairy on back, 

 inner ovate-oblong with an obtuse to rounded apex; stamens 

 6 fertile, subequal, inserted on the base of the perianth-seg- 

 ments, anthers oblong, of the outer twice as long as of the 

 inner, ovary-rudiment conspicuous G-denticulate ; female spike 

 sometimes longer, flowers solitary, sessile, bracts about half the 

 length, ovary linear-oblong, ferruginously hairy, bluntly edged in 

 flowering-stage becoming winged as the perianth withers, perianth- 

 segments subsucculent, with more membranous apex (outer 3) 

 and margin, more or less oblong nari-owing at the apex, the inner 

 3 slightly narrower with a thickened fleshy apex, spotted with 

 red and sparsely haizy except near apex and margins, staminodes 

 6, cordate, sessile at base of segments, style-column with large 

 recurving stigmas, about half the length of the segments. Unripe 

 fruit oval, with membranous wings. 



Leaf -stalks 3 to 5 in. long, blades including apiculus 4 to 71- in. 

 young male spike 4 in., the female reaching 1 ft. ; bracts on male 

 spike l-i line long, bracteole subulate § line, perianth-segments 

 li line, stamens 4 line; ovary 2 to 3 lines long, perianth-segments 

 1^ to li line, style and stigmas about § line. Unripe fruit 2 in. 

 long by half as broad. Near B. Preussii Pax, but distinguished 

 by the ferruginous tomentum of leaves and inflorescence, rather 

 narrower perianth-segments, and 6 anther-bearing stamens. 



PuNGO Andongo. — Flowers greenish. Completely draping the larger 

 trees with its foliage. Plentiful in small woods among the huge rocks 

 between Catete and Luxillo. In fl. middle and end of Jan. 1857. 

 No. 4040. 



3. D. polyantha Rendle sp. nov. 



A sutiruticose high and wide climber, branches densely ferru- 

 ginously stellato-tomentose, the tomentum disappearing in the 

 older shoots, leaves alternate generally longer than the inter- 

 nodes, long-stalked, petioles shorter than the cordate acute 7-ncrved 



