PHILIPPINE URTICACEAE. 
491 
maequilongis, 8 ad 7 cm longis, laminis subaequalibus, ovalibus vel 
} ohlongo-ellipticis, 13 ad , 17 cm longis, basi acutis, margine basi excepta 
baud alte serratis, apice acuminatis, acumine gracile, serrato, triplinerviis, 
venis transversalibus admodum numerosis cum reticulationibus utraque 
pagina conspieufs, utraque pag'ina cystolithis creberrimis notatis; stipulis 
inconspicuis. 
Mindanao, District of Davao, Mount Apo, Todaya, Elmer 101/87, 11758. Also 
•closely allied to P. melastomoides, differing from the Philippine plants here so 
identified by its .larger and differently shaped leaves with conspicuous, cystoliths 
on the upper surface, and by the much shorter pistillate inflorescences ; from 
typical P. mdlastomoides, as described by Blume, 22 by having somewhat larger and 
longer-petioled leaves, which are not trinerved but tr-iplinerved. Weddell describes 
the leaves of P. Irinervia as trinerved, and they are figured by Wight as such, 
or very nearly so; in the present species tliey are very distinctly triplinerved. 
Local name: salimbanguin. 
7. Pilea rigida sp. nov. 
Herba: inflorescentiis brevibus quam petioli breves brevioribus vel 
paulo longioribus ; perianthii pistilliferi lobis valde inaequalibus : foliis 
decussatim -oppositis, paris petiolis laminisque inaequalibus, his rigide 
chartaceis, ellipticis vel anguste. . ellipticis, basi utrinque subcordatulis, 
margine ima basi excepta serratis, apice acuminatis, trinerviis vel sub- 
triplinerviis, venis transversalibus numerosis cum reticulatione utraque 
pagina conspiGuis, cystolithis confertis, conspicuis. 
Monoecious, the inflorescences not exceeding 7 mm in length, usually 
shorter, the peduncles very short or wanting : , staminate flowers in glom- 
erules, nearly sessile; perianth-segments 4, oval or ovate, 0.4 mm long, 
obtuse and often apiculate; filaments of similar length, anthers small, 
immature ; rudimentary ovary nearly circular, small : pedicels of pistillate 
flowers very short at anthesis, 'becoming about 0.5 mm long in fruit, the 
intermediate perianth-lobe lanceolate, obtuse, curved, about 1 mm long, 
.laterals ovate' acuminate, 0.4 mm long; ovary 'and achene gibboxis, the 
latter smooth, nearly 1 mm long ; stigma eapitate-penicillate. * 
A glabrous herb, about 40 cm high, sparingly branched; the internodes 
angled when dry, ranging in length from 15 mm near the base to about 7 
mm near the apex : leaves of a pair unequal both as regards lamina and 
petioles, the latter never exceeding 1 cm in length, the longer more often 
about 8 mm, the shorter about -4 mm; lamina rigidly char taceous, elliptic 
or, narrowly elliptic, the longer, lip to 5.5 cm in length and 1.8 cm in 
width, but more > often smaller, the shorter about half the size of the 
corresponding longer, very shallowly eordulate on both sides at the base, 
the margins regularly serrate, the apex forming a slender serrate acumen ; 
trinerved or when seen from below appearing somewhat triplinerved, the 
22 Mus. Bot. Lugd.-Bat. 2 (1856) 55. 
