218 
The Philippine Journal of Science 
1916 
ciculos periphericos continuum. Limbi in sicco membranacei 
minute et inconspicue pellucido-punctulati, 8.5-9 cm longi 2.S-2.8 
cm lati. Petioli fere 4 mm pedunculi 10 mm longi. Spica florens 
1.7 cm longa at 1.5 mm crassa, rhachis sine canali lysigeno, 
bracteae pelta 0.5 mm diam. 
Luzon, Loher 679b V • P-, h. Monac. ex h. Kew. 
PIPER POLYCLADUM C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 438. 
Luzon, Benguet Subprovince, Baguio, Phil. PI. 751 Merrill, in thickets, 
limestone region, altitude 1,500 m, flowers yellow: Rizal Province, Bur. Sci. 
13396 Ramos, on trees in forests. 
PIPER SARMENTOSUM Roxb. FI. Ind. 1 (1820) 162. 
Negros, Cabancalan, Merrill 6729. Camiguin, Mambajao, Elmer Ib2b5. 
Forma b C. DC. forma nova. 
Limbo brevius acuminato. 
Mindanao, Davao District, Piper bb9. 
PIPER CORYLISTACH YON C. DC. Prodr. 16 1 (1869) 346. 
Luzon, Laguna Province, San Antonio, Bur. Sci. 20527, 12030 Ramos: 
Rizal Province, Antipolo, Bur. Sci. 11867 Robinson: Tayabas Province, 
Bur. Sci. 1332b Ramos: Pangasinan Province, Umingan, Bur. Sci. 
18338 Otanes. Samar, Bur. Sci. 17b20 Ramos. Biliran, Bur. Sci. 18785 
McGregor. Mindanao, Davao District, Bur. Sci. 15859 Fenix. Leyte, 
Malitbog, Weber 1523. 
Forma b C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 439. 
Luzon, Camarines Province, Philip. PI. 1575 Ramos. Biliran, Bur. Sci. 
18775 McGregor. Leyte, Elmer 7083. 
Forma d C. DC. 1. c. 
Luzon, Rizal Province, Loher 6801 : Cagayan Province, Bur. Sci. 13882 
Ramos, on trees in damp forests, flowers yellowish-white. 
PIPER RE1NWARDTIANUIV1 C. DC. Prodr. 1 6 1 (1869) 354. 
Panay, Iloilo Province, Bur. Sci. 1813b Robinson. 
PIPER RETROFRACTUM Vahl Enum. 1 (1804) 314. 
Babuyanes Islands, Dalupiri, Bur. Sci. 10638, 10651 McGregor: Cami- 
guin, Bur. Sci. b092 Fenix. Luzon, Rizal Province, Bur. Sci. 118bl Robin- 
son, fruit dark-red: Laguna Province, Jala-Jala, Bur. Sci. 11935 Robinson 
& Ramos. Mindoro, Merrill 33b2, near the seashore. Palawan, Bur. Sci. 
Weber, Bur. Sci. 190 Bermejos, Ulugan Bay, Merrill 7216, in coconut groves 
at sea level, Bur. Sci. 851 Foxrvorthy, in forests along streams, growing on 
trees and shrubs. 
PIPER PENNINE RVE C. DC. in Perk. Frag. FI. Philip. (1905) 157. 
Adde: Stirpis masc. spica canali lysigneo central! peripher- 
isque munita, rhachis glabra, bracteae pelta rotunda centro 
pedicellata, stamina 2, antherae 4-valvatae tetragonae. 
Leyte, Jaro, Wenzel 719, in forests, altitude 500 m. 
