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A REVISION OF PHILIPPINE PIPERACEAE. 443 
mm, pedunculi 30 mm longi. Spica florens 6.5 cm longa, 2 mm crassa. 
Bracteae pelta 1 mm.diametro. An P. Betlei forma? 
Luzon, Province of Batangas, Mount Malarayat, Copeland s. n., February. 
57. Piper siassiense C. DC. sp. nov. 
Foliis superis parvis modice petiolatis, ovatis basi ima aequilatera 
subacutis apice acute acuminatis, supra glabris subtus ad nervos minute 
velutinis, 5-plinerviis, nervo centrali a 4 mm supra basin trifido; petiolo 
velutino-puberulo basi ima vaginante; stirpis masc. pedunculo glabro 
petiolum superante, spica quam folii limbus multo breviore, rhachi 
hirtella, bracteae pelta glabra transverse elliptica centro pedicellata, 
pedicello hirtello, staminibus 2 antheris ellipticis bivalvatis. 
Dioicum, a caule inferne repente rami circiter 35 cm longi surgentes. 
Ramuli juniores minutissime puberuli cito glabri, spiciferi 0.5 mm crassi, 
collenchyma in fasciculos discretos dispositum, haud libriforme, fasciculi 
intramedullares 1-seriati, canalis lysigenis unicus centralis. Limbi in 
sicco membranacei tantum minutissime pellucido-punctulati, superi usque 
ad 72 mm longi et ad 30‘mm lati, inferiores conformes usque ad 10 cm 
longi et 4.5 cm lati, infimi rotundati basi cordati usque ad 8 cm longi. 
Petioli 5 mm, pedunculi 7 mm longi. Spica florens 10 mm longa, 2 mm 
crassa. Bracteae pelta transverse 1 mm lata. An P. Allenii masc. ? 
Srasst (Sulu Archipelago), in coconut groves, Merrill 5311, October. 
58. Piper laxirameum C. DC. in Elm. Leafl. Philip. Bot. 3 (1910) 775. 
MINDANAO, District of Davao, Todaya (Mount Apo), Elmer 10503, May. 
~ 59. Piper delicatum C. DC. 1. ¢. 774. % 
- Foliis breviter petiolatis, anguste ovato-lanceolatis, inferne subat- 
tenuatis et basi ima aequilatera vel leviter inaequilatera acutis apice 
acute et sat longe acuminatis, supra glabris vel ad nervos parcissime 
puberulis, 5-plinerviis nervis adscendentibus, centrali a 5 mm supra basin 
trifido, nervo laterali utrinque a basi soluto; petiolo puberulo basi ima 
vaginante; pedunculo glabro petiolum fere aequante; stirpis masc. spica 
florente quam folii limbus pluries breviore, rhachi hirtella; bracteae 
glabrae pelta rotunda, pedicello brevi et lato; staminibus 2, antheris 
rotundatis ; stirpis fem. spica matura quam folii limbus pluries breviore 
cylindrica apice obtusa, bracteae glabrae pelta rotunda centro subsessili, 
rhachi ut in mare; ovario libero rotundato, glabro, apice brevissime 
attenuato, stigmatibus 3 vel 4 linearibus, bacca ovata apice subacuta. 
Frutex delicatus, ad arbores parvas scandens. Ramuli juniores hirtelli, 
in sicco fusci, adulti glabri et pallidi, teretes, spiciferi 1 mm crassi, 
collenchyma in fasciculos discretos dispositum et haud libriforme, fasciculi 
intramedullares 1-seriati, canales lysigenes nulli, cellulae fuscae magnae 
in cortice sparsae. Limbi in sicco tenuiter membranacei, minute et 
creberrime pellucido-punctulati, usque ad 8 cm longi et 2.5 cm lati. 
