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THE FLORA OF MOUNT PULOG. 331 
ciliatae, caetero glabrae, 2 superiores yacuae; palea gluma brevior, bicar- 
inata, bidenticulata. Stamina 3, antheris brevibus. Styli distincti, 
stigmatibus plumosis. Caryopsis oblonga, nitida, brunnea, hilo puncti- 
forme. Gramina perennia, dense caespitosa, humilia, foliis involuto- 
setaceis. Panicula ad spiculam erectam, solitariam reducta. 
Monostachya centrolepidoides Merrill sp. nov. 
Dense caespitosa, glabra, 6 ad 10 cm alta; foliis involuto-setaceis, 
erectis, subrigidis, 2 ad 4 em longis, 0.5 mm diametro; spiculis solitariis, 
parvis, lanceolatis, erectis, acuminatis, circiter 6 mm longis, pedunculo 
quam folia breviori. 
A densely tufted perennial grass 6 to 10 em high, glabrous except the 
lower margins of the flowering glumes, the culms fasciculately branched 
from the lower portions, the internodes very short. Sheaths rather loose, 
thin, exceeding the internodes; ligule a ring of weak, 1 mm long hairs; 
leaf-blades involute-setaceous, somewhat rigid, 2 to 4 em long, 0.5 mm 
in diameter. Panicle reduced to a single erect spikelet, the peduncle 
erect, rigid, minutely scabrid, exserted 1 to 2 em beyond the upper sheath ; 
sometimes one or two 0.8 to 1 mm long pedicels of aborted spikelets are 
to be found near the apex of the culm below the solitary terminal spikelet. 
Spikelet green or straw-colored, lanceolate or narrowly lanceolate, acum- 
inate, about 6 mm long, 1 to 1.3 mm in diameter; empty glumes 2, the 
first oblong-ovate, 3 mm long, 2 mm wide, acute, not keeled, glabrous, 
subhyaline, obscurely 5-nerved, the nerves somewhat convergent, not 
strictly parallel, the second similar to the first but 3.5 mm long and 
3-nerved ; flowering glumes 4, of which the lower two contain perfect 
flowers, the upper two being smaller and containing only a palea, the 
first flowering glume ovate-lanceolate, not keeled, 3.5 to 4 mm long, about 
1.3 mm wide, obscurely 7- to 9-nerved, acuminate, the apex minutely 
2-toothed, and with a straight, 1 mm long, scabrid, terminal mucro, the 
margins in the lower third somewhat ciliate-pilose with 0.5 to 0.8 mm 
long hairs. Palea linear-lanceolate, hyaline, 3 mm long, 0.8 mm wide, 
minutely 2-toothed, 2-keeled, the keels slightly scabrid. The second 
flowering glume and its palea similar to the first and like it containing 
a perfect flower. Third flowering glume similar to the first and second 
but smaller, about 2 mm long, containing a palea but no flower. Fourth 
flowering glume terminating the rachilla, very small, 1 to 1.5 mm long, 
flowerless, but containing a small palea. Callus to each flowering glume 
minutely ciliate. Joints of the rachilla glabrous, 0.8 to 1 mm long, 
articulated below each flowering glume. Caryopsis free from the palea, 
narrowly oblong, brown, shining, 1.5 mm long, 0.5 mm in diameter, the 
hilum punctiform. 
Mount Pulog, Province of Benguet, Luzon, For. Bur. 16088 Curran, Merritt & 
.Zschokke, January 5, 1909, growing in trails and open spots in the grass lands of 
the summit, altitude about 2,800 m. 
96832——_5 
. sere ". 
