2880 



Leaflets of Philippine Botant 



[Vol. VIII, Art. 115 



usually congregated along the septae. 



Type specimen number 11544, A. D. E. Elmer, Todaya 

 (Mt. Apo), District of Davao, Mindanao, August, 1909. 



Forming patches or solitary upon moss covered bowlders 

 strewn along the Cati creek at 5750 feet altitude or just 

 above its first of a series of falls on the east or northeastern 

 3ide of mount Apo. "Tasik" in Bagobo. 



Apparently distinct from all other Philippine species 

 of violets. 



VITACEAE 



Cissus apoensis Elm. n. sp. 



A shrubby tree climber; leaf bearing branches 1 cm 

 thick, subterete, densely castaneus hairy, young branches 

 long and slender. Leaves opposite or tendril opposed, as- 

 cending or horizontal, well scattered; petiole almost 1 dm 

 long, terete or nearly so, not so prominently ridged as the 

 branches; leaflets 3, coriaceous, densely soft tomentose 

 beneath, very short hairy above, the terminal one longer and 

 symmetric, all abruptly terminated into a narrow and 

 acuminately pointed apex, the terminal leaflet elliptic in 

 outline, the lateral pair of leaflets inequilateral and broadly 

 rounded at the base, 1.5 dm long at least by 12 cm wide, 

 subentire around the base, otherwise coarsely and irregularly 

 dentate, the lateral pair at the base oblique and occasion- 

 ally a trifle cordate; lateral petiolule thick, 1 cm long, 

 the terminal one twice as long, latericius tomentose, flat- 

 tened along the upper side, becoming easily detached; mid- 

 vein straight to the apex, usually with 3 lateral basal veins 

 on the broader and only 1 lateral basal vein on the nar- 

 rower side, the 5 other lateral pairs of nerves ascendingly 

 curved, the larger of the basal lateral nerves branched 

 along the lower side, cross bars and few coarse reticula- 

 tions comparatively obscure, becoming however more evident 

 in the old leaves as the indumentum wears down or off 

 entirely. Inflorescence along the slender twigs, opposed by 

 a reduced leaf, 2 dm long, 3-branched toward the apex; 

 peduncle terete, finely ridged, dark brown pubescent, fre- 



V 



