Vol. X, No. 1.] The Dioscoreas of the Old World. 3a 



[N.8.] 



acuminata: venae secundaria* plus rainusve regulariter traject®, sed 

 parum conspicuae in rete : marlines tenues : petiolus glaber, ad 5 cm. longus. 

 Flore* maris in spicas aggregatas axillares 3— 6-nas dispositi : spica) 

 ad 3 cm. long*, circiter 25- florae : axis slaber nisi basi, ubi pili perpauci : 

 bracteaeovafce, acuminata, deflexae, depressae, I mm. long83 : bracteol. 

 similes, minores. Sepala fere rotunda, mucronulata, 1-25 mm. longa. 

 Petala crassiora, elliptico-spathulatM, 1 mm. longa. Stamina ft, petal 

 a'quilonga : anthers fil amentia aequilong.-n. Flore* fceminei ignoti. 



Insulae vitienses.— Frequens, (Seemann, 628! Oraeffel). ! orsan 

 etiam in insula Tahiti. 



86. D. nummularia, Lain., Encyc. Meth., iii. (1789), 

 p. 231: Blume, Enura. Plant. Jav., i. (1827), p. 21 in part: 

 Prain et Burkill in Elmer, Leaflets of Philippine Bot., v. (1913), 

 p. 1599. D. glabra, Koorders in Mededeel. van s'Landa Plan- 

 tentuin, xix. (1898), p. 31J Celebes, the Moluccas, Philip- 

 pine islands, New Guinea, and across the Torres Straits to 

 Prince-of- Wales Island. D nummularia replaces D. pyrifolia 

 in Eastern Malaya, apparently being as common there as D. 

 pyrifolia is in Western Malaya. D. pyrifolia and D. nummularia 

 for the most part are distinguished without difficulty by their 

 leaves, having different venation. 



Variat : — 



Var. vera. Capsules haud glaucae. 



Var. glauoa. Capsulce plus minusve glaucae. 



Varietas vera late repanda. Varietas olattca reperitur in Luzon (Elmer, 

 5638 I Hallier !). 



87. D. Mebrillti, Prain et Burkill in Elmer, Leaflets of 

 Philippine Bot., v. (1913), p. 1598. A species of the alliance of 

 the preceding six, which has coriaceous leaves. It has been 

 collected by Merrill on Mount Halcon in Mindoro, and bv 

 Llmer on Mount Apo in Mindanao, Philippine islands. 



88. D. grata. A slender species of the Philippine 

 islands, so far only collected by Loher at Montalban in Luzon. 



D. grata. Tuber ignotura. Caulca tenuissimi, glabri, parum 

 striati, I mm. diametro. Folia alterna, lineari-lanceolata, sequaliter 

 versus apicem attenuata, ad 8 cm. longa, ad 8 mm. lata, glabra 5- 

 nervia : area media a nervorum lateralium pare primo terminata lineari- 

 anceolataj venae secundaria} in rete indisincta*; petiolus glaber, 

 tenuis, 1-6 cm. longus. Flow man$ ad 20 in spicas foliis breviores 

 dispos.ti: axes rjse!, par. imangulati, glabri, ad 25 mm. lon ? i : alabas- 

 tra rosea plus rmnusve t-iangulari-conoidea : bracteee parvae, 5 mm. 

 longse, reflexse, ovatse, acutse. Sepala crassa, roseo-tincta, ovata, 



■btusa, -75 mm. longa. 



crassa. oto n%na 



petal is breviora: anthem filamentis ^equilongae. Flores fceminei in 

 spicas sohtarias dispositi. Capsulce apice truncate, basi attenuate, 



ad 25 mm. longse: 



mm. latae 



datiB, 20 mm. lonsrse. 15 



Insula Luzon- Philippiotsnsium. Ad Montalban in provincia 

 Kizal insulae Luzon, (Loher, 7012! 7017 !). 



89. D. Wattii, Prain et Burkill, in Journ. Asiatic Soc. 

 Bengal, iv. (190S), p. 457. A wide climbing species of the 



