xi, c, 3 Merrill: New Philippine Vitaceae 131 
leaves having a deeper and much narrower basal sinus than any Philippine 
material referred to the species that I have seen. In our abundant mate- 
rial the leaves are always broadly ovate, but with the basal sinus very 
broad and rather shallow, the base sometimes being truncate or subtrun- 
cate. I refer here the following material: 
Luzon, Benguet Subprovince, Elmer 6467 : Province of Nueva Ecija, 
Bur. Sci. 5267 McGregor : Province of Zambales, Hallier s. n. : Province 
of Bataan, Williams 193, For. Bur. 1785 Borden, Merrill 3151, 1582, Elmer 
6751: Province of Laguna, For. Bur. 13315 Tamesis, Bur. Sci. 12014 
Ramos: Province of Rizal, Bur. Sci. 1386 Ramos: near Manila, Marave 
135. Apo Island, Merrill 410. Palawan, Bur. Sci. 246 Bermejos. 
Ticao, For. Bur. 1071 Clark. Negros, For. Bur. 13704, 17425 Curran. 
Mindanao, District of Zamboanga, Bur. Sci. 11787 Robhison: District of 
Davao, Piper 462: District of Cotabato, Bur. Sci. 11557 Robinson. 
One nearly constant character of the plants referred here is that they 
readily break up in drying, the stems breaking at the nodes and the leaves 
readily becoming detached, this fragile character being also indicated by 
Rheede for his Neriam Pulli. The plant is somewhat succulent and difficult 
to dry properly. The fruits are fleshy, purple, and very acrid to the taste. 
According to Borden the stinging sensation in the mouth lasts for twenty- 
four hours after tasting the fruit. 
Var. LUZONIENSIS var. nov. 
A typo differt foliis minoribus, 4 ad 6 cm longis, membrana- 
ceis, in partibus f superioribus sensim angustatis, longe acumi- 
natis, basi late cordatis vel truncatis. 
Luzon, Province of Rizal, Bosoboso, For. Bur. 3317 Ahern’s collector, 
September, Bur. Sci. 4576, 13613 (type) Ramos, August; San Mateo, For. 
Bur. 1840 Ahern’s collector, September. 
This form is very different in appearance from the material I have 
above referred to Cissus repens Lam., and is not at all like Rheede’s figure, 
the type of Cissus repens Lam., in leaf-form. It is much more slender 
than is the Philippine form of Cissus repens Lam., does not show a 
tendency to break in drying and has smaller, thinner, differently shaped 
leaves, more or less gradually narrowed from the lower one-fourth to 
the rather slenderly acuminate apex. When mature fruits are known it 
may be found better to treat it as a distinct species. 
COLUMELLA Loureiro 
( Cayratia Juss., Cissus § Cayratia Planch.) 
In the year 1911 Doctor F. Gagnepain 1 2 in connection with 
his studies on the Vitaceae of Indo-China, came to the conclu- 
sion that Cayratia, as characterized by Jussieu in 1823, con- 
stitutes a valid genus distinct from Cissus. He accordingly 
adopted Jussieu’s generic name, and considered under it sixteen 
species, most of which had been described by previous authors 
1 Un genre meconnu: classification des Cissus et Cayratia. Not. Syst. 
1 (1911) 339-362. 
