210 The Philippine Journal of Science me 



PIPER AUR1LIMBUM C. DC in Elm. Leafl. Philip. Bot. 3 (1910) 768. 



Adde : Stirpis masc. scandentis, pedunculo 14 mm longo, spica 

 florente 2.5 cm longa et 3 mm crassa, rhachi et bractea ut in 

 femina, staminibus 2, antheris rotundato-ovatis primum 4-locu- 

 laribus, adultis magnis paullo ultra 1 mm longis et 2-valvatis. 



Luzon, Ifugao Subprovince, Mount Polis, Bur. Sci. 19821 McGregor: 

 Cagayan Province, Abulug River, Weber 158&. 



PIPER CRASSILIMBUM C. DC. sp. nov. 



Ramulis glabris; foliis breviter petiolatis glabris, limbo late 

 ovato basi cordulato apice acute acuminato, 7-plinervio, nervo 

 centrali nervos adscendentes 2 mittente quorum supremus a 7-15 

 mm supra basin solutus, nervis lateralibus utrinque 2 a basi 

 divaricantibus, petiolo basi ima vaginante; stirpis masc. pedun- 

 culo glabro petiolum subaequante, spica florente quam limbus 

 pluries breviore, rhachi hirsuta, bracteae pelta rotunda carnosa 

 centro breviter pedicellata, staminibus 2 antheris rotundatis 

 filamenta fere aequantibus; stirpis fern, pedunculo ut in mare, 

 spica florente quam limbus pluries breviore, rhachi parce pilosa, 

 bracteae pelta rotunda carnosa centro breviter pedicellata, ovario 

 basi in rhachi leviter immerso superne oblongo carnoso glabro, 

 stigmatibus 3 rotundatis carnosis. 



Dioicum, scandens, 2-3 m altum. Ramuli in sicco flavicantes, 

 spiciferi 2 mm crassi, in 3.5 mm crassis collenchyma in fascic- 

 ulos discretos a latera productos sat crassos dispositum et haud 

 libriforme, fasciculi intramedullares 1-seriati, in mare canalis 

 lysigenus unicus centralis, in femina canalis centralis periphe- 

 ricique multi, cellulae aurantiacae in cortice et in medulla ere- 

 brae. Limbi in sicco coriacei flavescentes et haud pellucido- 

 punctulati, usque ad 12.5 cm kragi et 8.7 cm lati. Petioli 

 circiter 10 mm. Spica masc. 3.5 cm longa et inferne usque ad 

 3 mm crassa ; spica fern, fere 2 cm longa et usque ad 3 mm crassa 

 bracteae pelta 1.5 mm diam. 



Luzon, Benguet Subprovince, Baguio, Merrill 76U9, 7660, in thickets, 

 limestone region, altitude about 1,550 m, flowers greenish-yellow. 



PIPER PALAWAN UM C. DC. sp. nov. 



Ramulis glabris ; foliis breviter petiolatis glabris parvis, limbo 

 ovato basi aequilatera cordulato summo apice acuto, 7-plinervio, 

 nervo centrali nervos 2 adscendentes mittente quorum supremus 

 circiter a 7 mm supra basin solutus, nervis lateralibus adscen- 

 dentibus utrinque 2 a basi solutis, petiolo basi ima vaginante; 

 stirpis masc. pedunculo glabro quam petiolus multo longiore, 

 spica limbum superante glabra, bracteae pelta rotunda centro 



