DECEMBER 23, 1910] EUPHORBIACEAE COLLECTED ON SrpuyANn ISLAND 909 
cent beneath; infrutescence suberect, along the branchlets 
mostly, solitary or occasionally 2 or even 3-clustered, upon 
very short stalks; fruits subglobosely trilobed, hard, green, 
2.5 em. across, 3-celled and 3-sedeed. In wet alluvial soil 
along streamlets of light woods at 750 feet. The local Vi- 
sayan name is ''Cacao." 
Represented by 12381, Elmer, Magallanes (Mt. Giting- 
giting), Sibuyan, April, 1910. 
Cleistanthus robinsonii Elm. n. sp. 
Slender and tall trees; trunk 6 dm. thick, 12 to 15 
m. high, burly or wadded toward the base; branches from 
the middle, spreading, numerously rebranched, the ultimate 
ones lax and horizontally spreading; wood dingy white on 
the outside at least, hard, burly, without odor or taste; 
bark relatively thin, brown, scaling in plates, reddish be- 
neath the epidermis. Leaves drying green, submembranous, 
shallowly folded upon the upper pleasing green glabrous 
surface, glaucescently green and sparsely puberulent beneath, 
margins entire and curved upon the lower side in the dry 
state, alternatingly scattered along the thin short brown pu- 
bescent twigs, linearly oblong, the average blades 7.5 cm. 
long, 2 cm. wide across the middle, apex slenderly acuminate, 
base obtuse; midvein prominent, more or less short brown 
pubescent; the 8 to 10 lateral pairs ascending, curved es- 
pecially toward the tips which are faintly united, much 
less hairy, with axillary glands, reticulations evident from 
both sides; petioles 5 mm. long at least, dark brown pu- 
bescent. Flowers fascicled in the leaf axils, sessile, arising 
from short tubercles clothed with densely pubescent minute 
bracts; calyx glabrous, yellowish green, 4 mm. long, the 
basal 1 mm. united; its segments 5, oblong, acute, 4 mm. 
long, curvingly reflexed; petals thinner, also 5 and alternat- 
ing with the calyx segments, obovate, nearly 1 mm. long; 
disk irregularly lobulate, whitish; filaments of the same color, 
glabrous, 3 mm. long, the basal portion united, the upper 2 
mm. free and gradually tapering to a fine point; anther 
yellowish at the apex, base bilobed, attached to the middle of 
the back; style thick, 1.5 mm. long; fruits not seen. 
