xi, c, 8 Merrill: New Philippine Vitaceae 129 



and Mindanao. It is especially abundant in Mountain Province, Luzon. 

 It is widely distributed in southern China, and is known from Tonkin and 

 Formosa. 



Var. HUMULI FOLIA (Bunge) comb. nov. 



Ampelopsis humulifolia Bunge Enum. (1831) 12. 



Vitis heterophylla var. humulifolia Hook. f. in Curtis's Bot. Mag. 



t. 5682. 

 Ampelopsis heterophylla var. bungei Planch, in DC. Monog. Phan. 

 5 (1887) 455; Gagnep. 1. c. 7. 

 Luzon, Province of Nueva Vizcaya, Bagabag, Bur. Sci. 8170 Ramos; 

 Bontoc Subprovince, Bur. Sci. 5978 Ramos, intermediate between this 

 variety and the preceding one. Mindanao, District of Davao, DeVore & 

 Hoover 132. 



Widely distributed in China, extending southward to Hongkong, not 

 previously reported from the Philippines. 



Under our rules of priority, if these varieties are to be recognized, the 

 earliest valid names must be adopted, not those arbitrarily selected by 

 Planchon. Many American botanists would consider the specific name 

 heterophylla S. & Z. (1846), to be invalidated in Ampelopsis by the earlier 

 Ampelopsis heterophylla Blume (1825) = PARTHENOCISSUS HETERO- 

 PHYLLA (Blume) comb. nov. (Cissus landuk Hassk., Vitis landuk Miq., 

 Landukia landuk Planch., Parthenocissus landuk Gagnep.). 



CISSUS Linnaeus 



CISSUS DISCOLOR Blume Bijdr. (1825) 181; Planch, in DC. Monog. 

 Phan. 5 (1887) 354; Gagnep. in Not. Syst. 1 (1911) 354. 



Mindanao, Province of Misamis, Mount Malindang, For. Bur. U528, 

 U7S7 Mearns & Hutchinson, May, 1906, altitude 700 to 1,500 m: District 

 of Zamboanga, Sax River Mountains, Merrill 8105, November, 1911, 

 altitude 900 m. 



Gagnepain, 1. c, refers to this species Loher 377, 878, from Luzon, which 

 I have not seen. The Mindanao specimens agree closely with the descrip- 

 tions of the species, and with specimens in the herbarium of the Bureau 

 of Science determined by Gagnepain, Thorel 1392 from Cochinchina, and 

 Bons d'Anty from Yunnan. 



India to southern China, southward to Java and Celebes. 



CISSUS OBLONGI FOLIA sp. nov. § Eucissus. 



Suffruticosa, scandens, inflorescentiis parce furfuraceis ex- 

 ceptis glabra; foliis oblongis vel oblongo-ovatis, membranaceis, 

 10 ad 20 cm longis, basi subtruncatis vel rariter acutis, apice 

 breviter acuminatis, margine distanter denticulatis ; cymis usque 

 ad 10 cm longis ; floribus 4-meris, 4 mm longis ; fructibus oblongo- 

 ovoideis, junioribus breviter rostratis, 1.2 ad 1.5 cm longis. 



A scandent, tendril-bearing vine reaching a height of from 4 

 to 10 m, somewhat fleshy when fresh, the older stems somewhat 

 compressed when dry, the younger ones straw-colored or some- 

 what greenish, terete or obscurely angled, smooth, slightly striate 

 when dry, glabrous except the sparingly furfuraceous inflores- 



