Vol. 2 PIPERACEAE 15 
Piper sarcostylum C. DC. in Philip. Journ. Sci. 11 (1916) Bot. 216. 
Piper copelandii C. DC. in op. cit. 5 (1910) Bot. 447. 
Southern Luzon to Mindanao, Cuming 834, B. S. 18282, 17507, 22150 
Ramos, Copeland 1298, Merrill 7305. In forests at low altitudes. Ende- 
mic. Allied to Piper abbreviatum Opiz. 
Local name: Guti-guti (Bik.). 
PIPER ROTUNDISTIGMUM C., DC. in Philip. Journ. Sci. 5 (1910) Bot. 
* 425, 11 (1916) Bot. 209. 
Piper leyteanum C. DC. in Philip. Journ. Sci. 11 (1916) Bot. 220. 
Southern Luzon, Leyte, Biliran, Samar, Mindanao, Wenzel 505, 214, 468, 
657, 1819, B. S. 15247, 15879, 17658, 28405 Ramos, 18882 McGregor, Elmer 
13521, Clemens. In forests pt low and medium altitudes. 
Var. PILOSIUS C. DC. in Philip. Journ. Sci. 11 (1916) Bot. 209. 
Samar, B. S. 17434, 17658 Ramos. Endemic. 
Local name: Ihalason (Mbo.). 
PIPER RUFINERVE Opiz in Presl Rel. Haenk. 1 (1828) 159; Miq. Syst. 
Pip. (1843) 836; C. DC. Prodr. 16* (1869) 877; F.-Vill. Novis. 
App. (1880) 176; C, DC. in Philip. Journ. Sci. 5 (1910) Bot. 462. 
Luzon, Haenke. A species of doubtful status, known only from the 
criginal description. 
PIPER SAMARANUM C. DC. in Philip. Journ. Sci. 11 (1916) Bot. 223. 
Samar, Leyte, B. S. 17546 Ramos, Wenzel 1544. In forests at low alti- 
tudes. Endemic. 
PIPER SARMENTOSUM Roxb. FI. Ind. 1 (1820) 162; C. DC. in Philip. 
Journ. Sci. 5 (1910) Bot. 424, 11 (1916) Bot. 218. 
Piper siassiense C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 448. 
Southern Luzon, Negros, Palawan, Mindanao, Sulu Archipelago, Mer- 
rill 6729, 9480, 5811, Elmer 14245, Wenzel 1882. In thickets, coconut 
groves, etc., at low altitudes. India to southern China, southward to the 
Moluccas. 
Local name: Patai-butu (Sul.). 
PIPER SIBULANUM C. DC. in Perk. Frag. Fl. Philip. (1905) 158, Philip. 
Journ. Sci. 5 (1910) Bot. 442. 
Mindanao (Davao), (Warburg 14742). In forests at low altitudes. En- 
demic.° 
PIPER STRIATUM C. DC. in Leafl. Philip. Bot. 3 (1910) 776, Philip. 
Journ. Sci. 5 (1910) Bot. 441. 
Mindanao (Davao), Elmer 11764. In forests, altitude about 900 m. 
Endemic. 
Local name: Miaukau (Bag.). 
PIPER SUBPROSTRATUM C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 425. 
Mindoro, F’. B. 6751 Merritt, B. S. 40726 Ramos & Edano. In forests 
at low altitudes. Endemic. ; 
PIPER TAUMANUM C. DC. in Perk. Frag. Fl. Philip. (1905) 159, Philip. 
Journ. Sci. 5 (1910) Bot. 462. 
Mindanao (Davao), (Warburg 14741). A species of doutbful status, 
described from a sterile specimen. Endemic. 
