Vol. 2 PIPERACEAE {4 
PIPER COSTULATUM C. DC. Leafl. Philip. Bot. 3 (1910) 764, Philip. 
Journ. Sci. 5 (1910) Bot. 420, 11 (1916) Bot. 208. 
Luzon (Nueva Ecija, Nueva Vizcaya, Bataan, Tayabas), Panay, Min- 
danao (Agusan). In forests at higher altitudes. Endemic. 
Local names: Pagitan (Mbo.); sobo-manok (Tag.). 
PIPER CRASSILIMBUM C. DC. in Philip. Journ. Sci. 11 (1916) Bot. 210. 
Luzon (Benguet), Merrill 7660, 7649. In thickets, altitude about 1,500 m. 
Endemic. 
' PIPER CRASSINODUM C. DC. Leafl. Philip. Bot. 3 (1910) 780, Philip. 
Journ. Sci. 5 (1910) Bot. 445. 
Luzon (Tayabas, Laguna), Elmer 8042, B. S. 28723 Ramos & Edano, B. 
S. 27972 Ocampo. In forests, altitude about 1,000 m. Doubtfully distinct 
from Piper allenti C. DC. Endemic. 
PIPER CRISTATUM C. DC. Leafl. Philip. Bot. 3 (1910) 1770, Philip. 
Journ. Sci. 5 (1910) Bot. 428. 
Leyte, Mindanao (Davao), Elmer 10703, Wenzel 638, 1130. In forests, 
altitude 500 to 1,000 m. Endemic. 
Local names: Busok-busok (Bag.) ; buyok-biyok (C. Bis.). 
PIPER CURTIFOLIUM C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 421. 
Luzon (Abra, Bontoc), B. S. 7107 Ramos, 37844 Ramos & Edaio. In 
the mossy forest, altitude about 1,800 m. Endemic. 
PIPER DAGAMIENSE C. DC. in Philip. Journ. Sci. 11 (1916) Bot. 211. 
Luzon (Tayabas), Panay, Leyte, Samar, B. S. 15181, 24186, 24331, 24550 
Ramos, B. S. 28591, 31349, 31425 Ramos & Edaio, 32493 McGregor. In 
damp forests at low and medium altitudes. Endemic. 
Local name: Buyat-halo (P. Bis.). 
PIPER DAGATPANUM C. DC. in Perk. Frag. Fl. Philip. (1905) 154, Philip. 
Journ. Sci. 5 (1910) Bot. 455. 
Mindanao (Davao), (Warburg 14739, 14738). Probably from forests 
at medium altitudes. Endemic. 
PIPER DAVAOENSE C. DC. in Perk. Frag. Fl. Philip. (1905) 154, Leafl. 
Philip. Bot. 3 (1910) 785, Philip. Journ. Sci. 5 (1910) Bot. 453. 
Mindanao (Davao, Agusan), (Warburg 14740, 14745), Elmer 13582, 
11065. In bamboo thickets, altitude about 750 m. Endemic. Perhaps not 
distinct from Piper interruptum. Opiz. 
Local names: Bitung-tungon (Mbo.); manikatapai (Bag.). 
PIPER DECUMANUM Linn. in Stickman Herb. Amb. (1754) 19, Amoen. 
Acad. 4 (1759) 128, Sp. Pl. ed. 2 (1762) 41; Merr. Interpret. Herb. 
Amb. (1917) 181. 
Strium decumanum Rumph. Herb. Amb. 5: 45, t. 27! 
Piper forstenii C. DC. Prodr. 16* (1869) 3848, Leafl. Philip. Bot. 3 
(1910) 768, Philip. Journ. Sci. 5 (1910) Bot. 424. 
Mindanao (Agusan, Bukidnon, Davao, Lanao), Clemens 572, B. S. 
13667 Fénix, Elmer 13296, 11179. In forests at medium altitudes. Mo- 
luceas. 
Local names: Baragit (Bag.); biyog (Mbo.); malapagba (Buk.). 
