410 cxxxix. DioscoREACEiE (baker). [Dioscwea. 



with a distinct campanulate tube and G ovate acute segments. Fertile 

 stamens G. Female flowers in long lax racemes. Capsule rigid, 

 obovate-oblong, glabrous, 1-1 J in. long. Seeds oblong, broadly winged 

 all round the nucleus. 



Mozaxnb. Bist. British Central Africa : Nyasaland ; Shire Highlands, 

 Buchanan, 173 ! 158 ! and without precise locality, Buchanan, 175 ! 



3. D. sagittifolia. Pax in Engl. Jahrb. xv. 147. Stem twining, 

 glabrous. Leaves alternate ; petiole reflexed, shorter than the blade ; 

 blade triangular-sagittate, acuminate, 4-5 in. long, 2J-3 in. broad, 

 marked with dense pellucid lines, 5-nerved ; basal lobes obtuse. Male 

 spikes geminate, much shorter than the leaves ; bracts broad, ovate, 

 very small. Perianth campanulate ; segments broad, ovate, obtuse. 

 Fertile stamen^ G, very short. Female flowers and fruit unknown. 



Tropical AfVlca> Without locality, Lecard, 14. 



irile Iiand. British East Africa : Jur ; near Okel (Okale), Schweinfurth, 1712 I 



No specimen at .Kew. 



4. D. hylophila, Harms in Engl. Pfi. Ost-Afr. C. 146. Stems 

 twining, unarmed, glabrous. Leaves alternate, distinctly petiolate, 

 cordate-orbicular, cuspidate, membranous, glabrous on both surfaces, 

 0-8 in. long and broad, 9-nerved from the apex of the petiole. Male 

 flowers in long very lax peduncled racemes soHtary in the axils of the 

 leaves ; pedicels simple or forked, 2-3-flowered, deflexed ; bracts 

 lanceolate. Perianth campanulate, glabrous, ^^ in. long ; segments 

 orbicular. Fertile stamens 3. Female flowers and fruit unknown. 



Mozamb. Dlst, German East Africa : Usambara ; Lutindi, Hoist, 3423 ! 



5. D. macroura, Ravms in Notizh. K'&ngl. hot. Gart. Berl. i. (1897), 

 266. Leaves alternate, distinctly petiolate, cordate-orbicular, 1 ft. long 

 and broad, membranous, glabrous, with an undulated margin and a 

 subulate apical cusp 1^-2 in. long. Male flowers in an ample panicle ; 

 racemes lax, reaching 2 ft. in length ; lower flowers 2-3-nate ; pedicels 

 very short ; bracts ovate, minute. Perianth greenish, ^ in. long ; 

 segments oblong. Fertile stamens 6, very short. Female flowers and 

 fruit not seen. 



Upper Guinea. Cameroons : Yaunde, Zenker <Sf Staudt, 414 ! 



C. D. hirtiflora, Bmth. in Hook. Niger Fl. 537. Stems slender, 

 twining, unarmed, pubescent upwards. Leaves all alternate, distinctly 

 petiolate, simple, cordate-ovate, cuspidate, moderately firm, 1^-2 in. 

 long and broad, 5-7 -nerved from the apex of the petiole, glabrous 

 above, grey-pubescent beneath. Male flowers in slender lax axillary 

 spikes 2-3 in. long ; rhachis very hairy ; bracts ovate. Perianth very 

 small, hairy • segments obtuse ; outer ovate, inner oblong. Fertile 

 stamens 3. Female flowers and fruit unknown. 



Upper Guinea. Lagos : in forest-roads on the way to Papalaito, Milieu, 29 of 

 1896 collection ! Niger Territory : Nupe, Barter, 561 ! banks of the River Quorra 

 (Niger) opposite Stirling, Vof/el, 199 ! 



ILower Guinea. Angola : Golungo Alto, Wehoitsch, 4039 ! 



