8 4 Materials for a Flora of the Malaya)) Peninsula. 



branched lax-flowerecl perfectly glabrous. Capsule 2 inches broad retuse 

 at top and base. Seed nearly an inch wide, wing very broad. 



Singapore : ( Maingay) ; Malacca : (Maingav) ; Perak : Larut Hills 

 (King's Coll. 3972, 3858, 65G8). Endemic. 



12. D. SATIVA, Linn. Sp. PI. 1033. Tubers large variable inform. 

 Stem terete, with large warted tuberous bulbils. Leaves ovate cordate 

 deltoid acuminate, thin light green glabrous 3 to 6 inches long l£-3o 

 inches wide. Male panicles very long leafless or nearly so, or spikes 

 in pairs on a leafy branch. Spikes 1-li inch long slender, flowers 

 large for the genus white. Bracts lanceolate acuminate. Sepals ttt 

 to I inch long narrow linear lanceolate acute. Petals as long linear. 

 Stamens 6 filaments nearly as long as the anthers. Femle spikes 4 

 to 10 inches long. Flowers i inch long. Styles short thick. Stigmas 

 broad bifid recurved. Capsule oblong an inch long, wings fairly large. 



Linn. Hort. Cliff, t. 28, Benth. Fl. Hongk. 268. Fl. Austral. VI. 

 4G0, Hook. fil. Fl. Brit. Ind. VI. 295. D. bulbifcra, Br. Prodr. 294, 

 Wight. Ic. t. 878. D. Cliffortiana, Lam. Encycl. III. 232, (not 111. t. 

 HIS). 1). pulchella, and heterophylla Roxb. Fl. Ind. III. 801-804. 

 Helmia bulbifera, Kth. Enum. V. 435. 



Singapore: Tanglin, Changi, etc., (Ridley); Selangor : Kwala Lum- 

 pur (Ridley). Distrib. East Indies. 



Common in waste ground. Native names " Akar Kumili hutan," 

 " Ubi Kistala." The natives do not consider the yams fit to eat. 



13. D. ALATA, Linn. Sp. PI. 1033. Tubers large white or purple 

 within. Stems 4 angled and winged. Wings undulate or straight. 

 Leaves deeply cordate orbicular or ovate, 5-7 nerved. Male flowers 

 in slender fascicled spikes. Female spikes thicker. Capsule broadly 

 obcordate coriaceous 1-li inch long. Seed broadly winged all round. 

 Kunth. Enum. V. 387, Roxb. Fl. Ind. III. 797, Wight Ic. t. 810, Hook. 

 fil. Fl. Ind. VI. 296. D. afropurpurea, Roxb. Fl. Ind. III. 800. Com- 

 monly cultivated, but very rarely flowering. Probably not native. 

 Varieties, " Ubi Jawa " with short white-fleshed tubers, " Ubi Tero- 

 pong " with long white yams; " UbiKendmluk " tubers small and red, 

 and " Ubi Nasi " with largo red tubers. 



Doubtful Species. 



D. sp. Tuberous. Stem woody angled and thickly covered with 

 triangular flattened brown thorns 2 to 6 connate at the base forming 

 short thorny ridges, the thorns 1 inch long or more. Leaves deeply 

 cordate acuminate 6 inches long and as wide, cusp 1^ inch long, nerves 

 1 1 radiating from base and ascending to the cusp, transverse nervules 

 prominent and numerous, petiole 4-5 inches long thorny along the 

 upper edge. 



