244 ^^6 Philippine Journal of Science i»8o 



PIPERACEAE 



PIPER Linnaeus 

 PIPER ANGUSTIPELTATUM sp. nov. § Eupiper. 



Frutex dioicus, scandens, glaber; foliis oblongis, nitidis, 10 

 ad 16 cm longis, aequilateralibus, chartaceis, basi rotundatis et 

 anguste peltatis, 7-nerviis, apice perspicue acuminatis ; spicis 9 

 cylindricis, circiter 3 cm longis et 12 mm diametro, bracteis pel- 

 tatis, glabris, stylis tenuibus, patulis, confertis, 3 ad 4 mm longis. 



A glabrous, dioecious vine, the ultimate branches terete, about 



2 mm in diameter. Leaves chartaceous, oblong, 10 to 16 cm long, 



3 to 6 cm wide, equilateral or nearly so, the base rounded and 

 narrowly peltate, the petioles inserted, 2 to 4 mm from the edge 

 of the leaf, 7-nerved, the inner pair of nerves extending to the 

 apex, the reticulations horizontal, distinct, subparallel, the apex 

 rather prominently acuminate, both surfaces shining when dry ; 

 petioles 2 to 2.5 cm long. Pistillate spikes, leaf -opposed, cylin- 

 dric, about 3 cm long and 12 mm in diameter, their peduncles up 

 to 2 cm in length; bracts peltate, rounded, 0.8 mm in diameter, 

 styles numerous, densely crowded, spreading, slender, 3 to 4 mm 

 long. Stigmas 2, recurved, 0.5 mm long. 



Luzon, Tayabas Province, Mount Binuang, Bur. Sci. 288Jt6 Ra- 

 mos & Edano, May 19, 1917, in damp forests along rivers at 

 low and medium altitudes. 



This species is similar and very closely allied to Piper long- 

 istigmum C. DC. from which it is easily distinguished by its 

 narrowly peltate leaves. 



PIPER CATUBIGENSE sp. nov. § Eupiper. 



Frutex dioicus, scandens, foliis subtus ad costa nervisque 

 pubescens; foliis penninerviis, membranaceis, lanceolatis ad 

 oblongo-ovatis, 15 ad 17 cm longis, basi obtusis ad rotundatis, 

 leviter inaequilateralibus, apice tenuiter acuminatis, nervis 

 utrinque circiter 9, distinctis; spicis $ cylindricis, tenuibus, 

 5 ad 7 cm longis, circiter 3 mm diametro, bracteis peltatis. 



A scandent, dioecious vine, the branchlets, petioles and leaves 

 along the midrib and nerves on the lower surface distinctly pubes- 

 cent. Leaves membranaceous, lanceolate to oblong-ovate, pen- 

 ninerved, 15 to 17 cm long, 4 to 9 cm wide, the base obtuse 

 or rounded and slightly inequilateral, the apex slenderly acum- 

 inate ; lateral nerves about 9 on each side of the midrib, distinct, 

 ascending, somewhat curved ; petioles 10 to 12 mm long. Stam- 

 inate spikes cylindric, rather slender, black when dry, 5 to 7 

 cm long, about 3 mm in diameter, their peduncles 10 to 12 mm 



