141. DIOSCOREACEEX. 93 
12. Dioscorea rhipogonioides, Oliver, in Hook. Ic. Pl. t. 1868. 
Formosa: South Cape (A. Henry, 589, 970, 1297 !), Bankin- 
sing (4. Henry, 105!); Howakoxa (Ford, 10, 54/88 !). Herb. 
Kew. 
“ The root of this climber is called Shulang, and is much used 
for dyeing and tanning nets, &c."—.4. Henry. 
13. Dioscorea sativa, Linn. Sp. Pl. ed. 1, p. 1033, d Hort. 
Cliff. t. 28; Benth. Fl. Hongk. p. 368; Franch. et Savat. Enum. 
Pl. Jap. ii. p. 47; Mazim. Ind. Fl. Pek. in Prim. Fl. Amur. 
p. 478; Debeaux, Fl. Shangh. p. 65, d Flor. Tehef. p. 140; 
Duthie, Field Crops, t. 805 Hook. f. Fl. Brit. Ind. vi. p. 295. 
Suantune: Chefoo, cult. (ex Debeaux); KrANesv: Shanghai, 
cult. (ex Debeaux); Formosa: Tamsui (Oldham, 574!), Takow 
(A. Henry, 1871 A & B!), South Cape (A. Henry, 1210!), Apes 
Hill (Playfair, 188!) ; Huren: Ichang (A. Henry, 3641, 
3641 A, 4193 !), Nanto (A. Henry, 2068 !); SzEcHUEN : Mount 
Omei (Faber, 281!); Kwaneruna: Lofaushan (Ford!): Hoxne- 
Kone (Hance ex Bentham, Lamont, 789!). Mus. Brit. ; Herb. 
Kew. 
Widely dispersed through the tropics of both hemispheres. 
14. Dioscorea spinosa, Roxb. ex Wall. Cat. n. 5103; Hook. f. 
Fl. Brit. Ind. vi. p. 291. 
Dioscorea tilizefolia, Kunth, Enum. Pl. v. p. 401. 
Formosa: Bankinsing (A. Henry, 856!). Herb. Kew. 
Tropical India, Malaya, and Tropical America. 
15. Dioscorea zingiberensis, Wright, n. sp. 
Caulis suffruticosus, tenuis, levis, inermis. Folia alterna, 
2 poll. longa, 5-7-nervia, 3-(rarissime 5-)oba; lobus centralis 
triangularis, mucronatus ; lobi laterales rotundati plus minusve 
deflexi; petiolus 1 poll. longus. Spice  mascule solitarie 
petiolis paulo longiores. Perianthium 1 lin. diam., lobis 6 ovatis, 
rarius emarginatis. Stamina 6; anthere extrorse, latw. Racemi 
feminei solitarii. ` Perianthii lobi 6, late ovati, imbricati. 
Staminodia minuta. Stylus 3-fidus. Ovarium oblongum, tri- 
loeulare. Fructus 1 poll. diam., equaliter trialatus. Semen ala 
membranacea cireumdatum. 
Huren: Iehang (A. Henry, 407, 1520, 1621!). Mus. Brit. ; 
Herb. Kew. 
