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262 The Philippine Journal of Science 1014 
apex, the lower surface somewhat pilose with scattered white 
hairs, the hairs arising from minute papillae, the upper surface at 
first papillate and sparingly pilose, becoming scabrid. Panicles 
exserted above the upper leaves, the peduncles 1.5 cm long or less, 
narrow, 1 to 2 cm long, less than 5 mm wide, the branches ap- 
pressed, the lower ones 6 mm long or less and usually 4-flowered, 
the upper ones shorter, the uppermost usually bearing solitary 
spikelets. Spikelets crowded, about 1.8 mm long, more or less 
tinged with purple. Empty glumes about 1.8 mm long, slenderly 
7- or 9-nerved, slightly hispid externally in the upper part, obtuse. 
Flowering glumes two, the lower one elliptic-oblong, obtuse, 
quite glabrous, 1.6 mm long, the upper one ellipsoid, slightly 
ciliate near the apex, usually about one-third shorter than the 
lower one. 
Luzon, Province of Laguna, Dahican River back of San Antonio, Bur. 
Sci. 14914 Ramos, June, 1912, on stones along the river. 
A rather characteristic species, distinguishable by its very narrow, 
dense panicles. It is perhaps most closely allied to Isachne pauciflora Hack., 
but is distinguished by its narrow leaves and glabrous flowering glumes. 
DIMERIA R. Brown 
DIMERIA CILIATA sp. nov. 
Caespitosa, erecta, vaginis foliisque pilis longis albis mollibus 
instructis; racemis digitatis vel subfasciculatis, 4 ad 6, tenuibus, 
usque ad 12 cm longis, rhachibus circiter 0.7 mm latis, triangu- 
laribus, glabris vel leviter pubescentibus; spiculis 4 mm longis, 
glumis I et II carinatis, carinis longe ciliato-pilosis. 
A densely tufted, erect, perennial grass 50 to 80 cm high, the 
culms slender, the sheaths and leaves rather densely clothed with 
long, soft, white hairs, some longer (5 mm) and somewhat stiffer 
ones intermixed with the shorter and softer ones, the nodes 
bearded. Leaves linear-lanceolate, acuminate, base slightly or 
not narrowed, 8 to 15 cm long, 3 to 4 mm wide, softly ciliate- 
pilose on both surfaces; ligule about 1 mm long, truncate. In- 
florescence long-exserted, of 4 to 6 digitate or fasciculately 
arranged racemes, the racemes slender, 7 to 12 cm long, at first 
pale, soon turning pale-brownish, the rachis 3-angled and some- 
what flattened, about 0.7 mm wide, glabrous or slightly pubescent, 
the internodes 2 to 4mm long. Spikelets 4 mm long; first glume 
somewhat boat-shaped, keeled, 4 mm long, acute or obtuse, prom- 
inently ciliate-pilose with long white hairs on the keel; second 
glume similar but lanceolate, and also prominently ciliate-pilose 
on the keel; third glume shorter, hyaline, the awn slender, about 
10 mm long. 
