2X6 The Philippine Journal of Science 1916 



PIPER BETLE Linn. Sp. PL (1753) 28. 



Luzon, Camarines Province, Bur. Sci. 2218.'+ Ramos: Laguna Province, 

 Bur. Sci. 15053, 16639 Ramos. 



Forma b C. DC. in Philip. Journ. Sci. 5 (1910) Bot. 431. 



Luzon, Laguna Province, Los Baiios, Bur. Sci. 9689 Robinson, in forests, 

 altitude about 30 m: Tayabas Province, Tagcauayan, Bur. Sci. 13386 

 Ramos: Bulacan Province, Norzagaray, Bur. Sci. 13031 Ramos: Rizal 

 Province, Bur. Sci. 1353 % Ramos, flowers yellow. 



Forma c C. DC. 1. c. 



Luzon, Nueva Vizcaya Province, near Dupax, Bur. Sci. 11+172, 11+179 

 Ramos: Bataan Province, For. Bur. 23212 Alambra & Caulas. Panay, 

 Iloilo Province, Bur. Sci. 18153 Robinson. 



PIPER SARCOSTYLUM C. DC. sp. nov. 



Ramulis glabris; foliis breviter petiolatis glabris, limbo ellip- 

 tico-lanceolato basi aequilatera acuto apice acute acuminato; 

 7-plinervio nervo centrali nervos adscendentes utrinque 2 opposite 

 mittente quorum supremi a 2.5 cm supra basin soluti, nervo 

 laterali adscendente utrinque, a basi soluto, petiolo basi ima 

 vaginante; stirpis fern, pedunculo glabro petiolum paullulo supe- 

 rante, spica florente quam limbus pluries breviore, rhachi hirsuta, 

 bracteae glabrae pelta rotunda centro subsessili, ovario inferne 

 in rhachi immerso superne in stilum carnosum oblongum gla- 

 brum producto, stigmatibus 3 ovatis brevibus. 



Dioicum, in arboribus scandens. Ramuli in sicco fusci, spi- 

 ciferi 1 mm crassi, collenchyma fere omnino libriforme in 

 fasciculos discretos a latere productos dispositum, fasciculi in- 

 tramedullares 1-seriati, canalis lysigenus unicus centralis, zona 

 cellularum sclerosarum cum phloemate fasciculorum peripheri- 

 corum continua, cellulaeque sclerosae in cortice glomerulatim dis- 

 positae. Limbi in sicco rigidi creberrime pellucido-punctulati, 

 usque ad 10.5 cm longi et 4.2 cm lati. Petioli 5 mm, pedunculi 

 8 mm longi. Spica florens 2 cm longa et usque ad 8 mm crassa, 

 bracteae pelta 0.5 mm diam., stilus paullo ultra 0.5 mm longus. 

 Species P. chabae Bl. proxima. 



Mindanao, Butuan Subprovince, Agusan River, Merrill 7305. 



PIPER CHABA Blume Verh. Bat. Genoots. 11 (1826) 168. 



Luzon, Laguna Province, San Antonio, Bur. Sci. 16608, £0520, 20582 

 Ramos; Mount Maquiling, Bur. Sci. 17003 Robinson: Camarines Province, 

 Mount Isarog, Bur. Sci. 22077 Ramos. Leyte, Dagami, Wenzel 1+0, 802, 

 Bur. Sci. 15503 Ramos. 



PIPER RHOMBOPHYLLUM C. DC. Prodr. 16* (1869) 352. 



Luzon, Tayabas Province, Bur. Sci. 13282 Ramos: Camarines Province, 

 Bur. Sci. 22150 Ramos. Samar, Bur. Sci. 17507 Ramos. Leyte, Elmer 

 7080. 



