12 ENUMERATION OF PHILIPPINE PLANTS 14 
PIPER MEARNSII C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 447. 
Luzon (Tayabas, east coast), B. S. 2987 Mearns, 28710 Ramos & Edano. 
In forests at low altitudes. Endemic. 
PIPER MERRILLII C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 426, 11 
(1916) Bot. 212. 
Luzon (Laguna), Mindoro, Palawan, Negros, Samar, Merrill 1809, 
9505, 70388, McGregor 178, B. S. 20557, 39431 Ramos, 40575, 40695, 40709, 
40719, 40720 Ramos & Edano. In damp forests at low altitudes. Endemic. 
Local name: Parong (Bis.). 
PIPER MERRITTII C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 460, 11 
(1916) Bot. 224 (incl. var. parvifolium C. DC. 1. c.). 
Central Luzon to Mindanao, B. S. 31423, 26610 Ramos & Edafo, 24938, 
16537 Ramos, 22828 McGregor, Wenzel 1173, 1095, 502, 309, Elmer 10581. 
In damp forests at low and medium altitudes. Endemic. 
Local name: Manikatapai (Bag.). 
PIPER MINDORENSE C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 423. 
Mindoro, Panay, F’. B. 4474 Merritt, B. S. 30691, 30660, 30664, 30668 
Ramos & Edavio. In damp forests at medium altitudes. Endemic. 
PIPER MULTISTIGMUM C. DC. in Philip. Journ. Sci. 11 (1916) Bot. 222. 
Luzon (Bontoc, Ifugao), B. S. 19819 McGregor, 37665, 37987 Ramos & 
Edano. In forests, altitude about 1,000 m. An endemic species very close 
to Piper interruptum Opiz. 
PIPER MYRMECOPHILUM C. DC, in Philip. Journ. Sci. 11 (1916) Bot. 211. 
Leyte, Samar, B. S. 17599, 24366, 24845, 24346 Ramos, Wenzel 1464, 
1778. In damp forests at low altitudes. Endemic. 
PIPER NIGRUM Linn. Sp. Pl. (1753) 28; Presl Epim. (1851) 224; Blanco 
Fl. Filip. (1837) 21, ed. 2 (1845) 16, ed. 8, 1 (1877) 29, t. 11; Mig. 
F]. Ind. Bat. 1* (1858-59) 451; F.-Vill. Novis. App. (1880) 175; 
C. DC. Prodr. 16* (1869) 363, Philip. Journ. Sci. 5 (1910) Bot. 
452; Merr. Sp. Blancoanae (1918) 118. 
Piper laxum Vahl Enum. 1 (1804) 826; F.-Vill. Novis. App. (1880) 
176. . 
Philippines, fide Vahl 1. c.; probably the specimen cited represents the 
next variety. 
Var. TRIOICUM C. DC. Prodr. 16* (1869) 868, Philip. Journ. Sci. 5 (1910) 
Bot. 452. 
Luzon (Cavite, Batangas), B. S. 1339 Mangubat, Merrill Sp. Blancoanae 
585, cultivated only. Black and white pepper. 
Local names: Malisa (Tag.); pimienta (Sp.). 
Var. GLABRISPICUM C. DC. in Philip. Journ. Sci. 11 (1916) Bot. 223: 
Mindanao (Surigao), Weber. The black pepper plant of commerce; 
widely distributed in the Malayan region in cultivation. 
PIPER OBLONGIBACCUM C. DC. in Leafl. Philip. Bot. 3 (1910) Bot. 777, 
Philip. Journ. Sci. 5 (1910) Bot. 441. 
