Vol. X, No. 1.] The Dioscoreas of the Old World. 29 



[N.S.] 



Varietas vera reperitur in Insula Luzon, provinciis Rizal et 

 Benguet (Loher, 1882! 7007! Merrill, 6512 ! Elmer, 63U9 ! 6400!). 

 Varietas sagittifolia in provincia Xueva-Viscaya {Itamoa, 8178!). 

 Varietas angulata in Tonkin (Balansa, 279 !). 



61. D. bicolor, Prain et Burkill, in Journ. Asiatic So< 

 liengal, iv. (1908), p. 449. China, in the province of Yunnan. 

 The shape of the capsule is very unusual. 



62. D. aspersa, Prain et Burkill, in Journ. Asiatic 

 Soc. Bengal, iv. (1908), p. 447. China, in the province of 

 Yunnan. 



63. D. spicata, Roth, Nov. Spec. Plant., (1821), p. 

 571: Hook, f., Fior. Brit. Ind., vi. (1892), p. 291; and in 

 Trimen, Handb. Flor. Ceylon, vi. (1898), p. 227, in chief part. 

 Southern India and Ceylon. 



Variat : — 



Var. parvifolia. Folia parva, circiter 5 cm. longa. 

 Var. anamallayana. Folia majora, ad 10 cm. longa. 



Varietatam parvifoliam ex regione australi Zeylania? attulit 

 Thwaites! Varietas anamallay ana reperitur in montibus zeylanicis et 

 Travancoricis et in districtubus Cochin Coimbatoreque Tinnevellique. 



64. D. intermedia, Thwaites, Enum. Plant. Zeyl., 

 (1864), p. 326. D. spicata, Hook, f., in Trimen, Handb. Flor. 

 Ceylon, iv. (1898), p. 277. in part. Ceylon, Travancore, and the 

 district of Malabar. This yam seems to be common in the 

 parts of Ceylon near Kandy, and all the Peradeniya botanists 

 have been familiar with it; but Trimen left notes on it in the 

 Peradeniya herbarium under the name of D. spicata which 



were absorbed by Sir Joseph Hooker in his description of the 

 allied D. spicata. 



65. D. Trimenii. D. spicata, var. ft, Thwaites, Enum. 

 Plant. Zeyl., (1864), p. 326. Collected in fruit by Thwaites in 

 Central Gey Ion. 



D. Trimenii. Tuber ignotum. Caulis glaber, tenuis, inermis. 

 Folia opposita, longe hastato-cordata, acuminata, siceitate nigrescentia, 

 auriculis rotundata, glabra, ad 8 cm. longa, ad 4 cm. lata, 7-nervia : 

 area media a nervorum lateralium primo pare terminata oblanceolata : 

 venae secundaria infra prominentes : rete distinetum : petiolus ad 4*5 

 cm. longus. Flores ignoti. Capsuke basi aeutse, apice acuminata, 35 

 mm. longse : alae semicirculares, 25 mm. longae, 15 mm. latae, colore 

 fulvse. Semina circumcirca alata : ala fusco-castanea. 



In insula Zeyi^ania. — Ad Ambagaraowa, Thwaites, 3119! et sine 

 loco* Thwaites, 2872 ! 



66. D. Wightii, Hook, f., Flor. Brit. Ind., vi. (1892), 

 p. 291. In the extreme south of India in the district of Tinne- 



