Vol. 2 PIPERACEAE LT 
PIPER VILLILIMBUM C. DC. in Leafli. Philip. Bot. 3 (1910) 788, Philip. 
Journ. Sci. 5 (1910) Bot. 461, 11 (1916) Bot. 224. 
Northern Luzon to Mindanao, B. S. 23309, 23544, 20594, 13895, 14472, 
22028 Ramos, Wenzel 372, 414, 427, 730, 916, 1660, 1791, 1734, 1879, Elmer 
13605, Merrill 1783. In forests at low and medium altitudes. Endemic. 
Local name: Mandasai (Mbo.). 
PIPER VILLIRHACHE C. DC. in Philip. Journ. Sci. 11 (1916) Bot. 214. 
Mindanao (Agusan, Zamboanga, Bukidnon), Merrill 7280, B. S. 15773 
- Fénix, 36989, 86858, 86889 Ramos & Edaiio. In forests at low altitudes. 
Endemic. 
Local name: Tugpuan (Buk.). : 
PIPER VIMINALE Opiz in Pres] Rel. Haenk. 1 (1828) 150, t. 26, f. 1; Miq. 
Syst. Pip. (1843) 336; C. DC. Prodr. 16* (1869) 361, Philip. Journ. 
Sci. 5 (1910) 486, 11 (1916) Bot. 217; F.-Vill. Novis. App. (1880) 
176. 
Chavica viminalis Mig. in Linnaea 20 (1847) 131, Fl. Ind. Bat. 1? 
(1858-59) 445. 
Piper negrosense C. DC. in Leafl. Philip. Bot. 3 (1910) 786, Philip. 
Journ. Sci. 5 (1910) Bot. 454. 
Northern Luzon to Mindanao, B. S. 20408, 14685, 30513, 80560 Ramos, 
33690, 34036, 34083, 28746, 29194, 31131 Ramos & Edaio, Warburg 12126. 
In forests at low and medium altitudes. Endemic. 
Local name: Lauingan (Sub.). 
PIPER WENZELI C. DC. in Philip. Journ Sci. 11 (1916) Bot. 213. 
Piper hirtirhache C. DC. 1. ¢. 
Leyte, Samar, Wenzel 628, 728, 779, 819, 891, 1168, 1197, 1548, B. S. 
17587, 24290, 24285 Ramos. In forests, altitude about 500 m. Endemic. 
PIPER ZAMBOANGAE C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 424. 
Piper oophyllum C. DC. op. cit. 430. 
Piper williamsti C. DC. op. cit. 441. 
Mindanao (Zamboanga, Davao, Bukidnon), Copeland 320, 333, B. S. 
15778 Fénix, 36987 Ramos & Edano, De Vore & Hoover 233, Williams 2750. 
In thickets, coconut groves, etc., at low altitudes. Endemic. 
Local name: Lauingan (Sub.). 
DOUBTFUL AND EXCLUDED SPECIES 
PIPER AMBOINENSE C. DC.; F.-Vill. Novis. App. (1880) 175. 
PIPER ARCUATUM Blume; F.-Vill. Novis, App. (1880) 175. 
PIPER ATTENUATUM Miq.; F.-Vill. Novis. App. (1880) 176. 
PIPER GUAHAMENSE C. DC.; F.-Vill. Novis. App. (1880) 176. 
PIPER MARGINATUM Jacq.; F.-Vill. Novis. App. (1880) 176. 
PIPER MIQUELIANUM F.-Vill. Novis. App. (1880) 176. 
PIPER POTAMOGETONIFOLIUM Opiz; F.-Vill. Novis. App. (1880) 176. 
The above seven species were erroneously credited to the Philippines by 
¥.-Villar; none of them have been found in the Archipelago. 
PIPER CALLOSUM Ruiz & Pavon; Pres] Rel. Haenk. 1 (1828) 152. 
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