2680 LEAFLETS OF PHILIPPINE BOTANY [Vor. VII, Arr. 114 
ovary fusiform, dark brown, glabrous, short stipitate, 1 mm 
long; styles 2, slender, glabrous, 3 mm long at least, eon- 
nate at the base, stigma dull purplish brown ciliate. 
Type specimen number 1052!, A. D. E. Elmer, Todaya 
(Mt. Apo), District of Davao, Mindanao, May, 1909. 
Collected in black soil of glens among secondary forests 
at 3000 feet altitude. ''Halopos" is the vernacular Bagobo 
name. It is good feed for horses and cattle. 
Between Ischaemum digitatum Brong. and Ischaemum inter- 
medium Brong. Its larger leaves, more branched inflores- 
cence and middle row of awned spikes at once distinguishes 
it from Ischaemum muticum Linn. 
y] Rottboellia tongcalingii Elm. n. sp. 
(^. 
^ 
Small bi or perennial clusters; stems few to several, 
arising singly from short more or less thickened or nodulose 
rootstocks, strict, 1 to 2 m high, light green, terete, erect 
or ascending, inclining toward the apex, 5 mm thick at 
the base; roots wiry, the few nodes swollen. Lower cauline 
leaves 4 to 6 dm long, deeply grooved along the upper 
side and whitish along the midvein beneath, 5 to 8 mm 
wide, linear and slenderly tapering to the very finely point- 
ed scabrid apex, otherwise nearly smooth except the roughen- 
ed margins, strictly ascending, when old recurved and more 
or less persistent, edges curved upon the ventral ‘side or 
involute especially the upper one half, expanded at the 
point of attachment of the sheath, the uppermost leaves 
only 1 dm long and gradually tapering from the condupli- 
cate basal portion to the setaceous point, all drying black- 
ish brown; midrib and the 3 to 4 lateral pairs appearing 
ridged beneath and striate above; upper sheaths much shorter 
than one half of the internodes, longer than one half the 
internodes toward the base, well imbricating below, some- 
what twisting around the stem, gradually separating toward 
the distal end, margins strigose and the upper sheaths long 
yellowish hairy on the back above the middle as well, 
numerously ‘striate but not scabrous, at the base of the 
stems marcescent; ligule 1 mm wide, erect, terminating the 
sheath and extending around the inner side of the blade, 
