Vol X, No. 1.] The Dioscoreas of the Old World. 21 



[N.S.-] 



37. D. tomentosa, Koenig ex Roxb., Hort. Beng., 

 (1814), p. 105, name only: Heyne in Roth, Nov. Plant. Sp., 

 (1821), p. 371: Hook, f., Flor. Brit. Ind., vi. (1892), p. 289. 

 D. Iriphylla, Russ. ex Wall., Cat. Lith., (1832) No. 5101D. D. 

 nullica, Ham. MS. Helmia? tomentosa, Kunth, Enum., v. 

 (1850), p. 439. India south of the Gangetic Plain, and in 

 Ceylon in damper parts. 



38. D. Arachidna. A small obscure species of the 

 dense forests of Assam, north of the Cacliar Hills. Its tubers 

 are arranged somewhat like those of D. aculeata, but it is 

 otherwise closely allied to Z>. pentaphylla and D. melanophyma . 



D. Arachidna. Tubera plura, ellipsoidea. laevia, carnc alba ten- 

 era, ad 5 cm. longa, stolones oblique descendentes 5 — 20 cm. longas ter- 

 minantia. Caules glabri, inermes, tenues, sinistrorsim volubiles. Folia 

 alterna, ternata; foliola media elliptica, versus apieem basinque angus- 

 tata, apice breviter acuminata, glabra, ad 7 cm. longa, ad 4 cm. lata, 

 penninervia: foliola lateralia inaequalia, medio fere sequilonga, ad 4 

 cm. lata; petiolus ad 3'5 cm. longus: petioluli ad 5 mm. longi. Flares 



ignoti. 



Assam. In sylvis districtu Nowgong prope Lumding ( Burkill ! Kal- 

 ka Pershad, 35581 !) Tubera edibilia cibo a Mikiris vulgo effodiuntur. 

 Typi in herbariis ad Kew et Calcuttam conservantur. 



39. D. melanophyma, Prain et Burkill, in Journ. Asiatic 

 Soc. Bengal, iv. (1908), p. 452. D. kamaonensis , Collett, Fl. 

 Simlensis, (1902), p. 518. D. quinata, Atkinson, Gazetteer 

 N.W. Prov., x, (1882), p. 703, name only. D. sp. Griffith, 

 Posthumous Papers, Journal, (1851), ii, p. 62. The Himalaya 

 from 4000 to 6000 ft., from the eastern border of Kashmir 

 to Sikkim ; in the Khasia Hills, and in the Chinese Province of 

 Yunnan. 



40. D. kamoonensis, Kunth, Enum., v. (1850), p. 395. 

 D. kamaonensis , Hook, f., Flor. Brit. Ind., vi. (1892), p. 290. 

 D. Fargesii, Franchet in Revue Hortic, 1896, p. 541 : Bois 

 in Bull. Soc. Bot. France, xlvii. (1900), p. 49: Hackel in Bull. 

 Soc d'Acclim., (1901), p. 193. D. pentaphylla, Wall., Cat. Lith., 

 (1832), No. 5098F: Diels in Engl. Bot. Jahrb., xxix. (1900), 

 p. 260, presumably. D. iriphylla, Wall., Cat. Lith., (1832), 

 No. 5102D in part and 3102E. D. sp., C. H. Wright in 

 Journ. Linn. Soc. Bot., xxxvi. (1903), p. 91. The Himalaya 

 from Kamaon to Sikkim, ascending from 3000 to 6500 ft.; in 

 northern Siam, northern Burma and the Chinese Provinces of 

 Yunnan, Szechuan, Kweichow and Hupeh. 



Variat 



Var. vera 



per antes, acuminata?. 



ilinis aeauiloncrse. Folia ad 



Var. stbamixea. tsractece nonous mascuiinis sequuoi 



6 cm. longa. 

 Var. Fargesii. Bractece floribus mascuiinis aaquilongse. Fol%a ad 



cm. loniia. 



