i.) 
PHILIPPINE URTICACEAE. 517 
¢ 
inaequimagnis, 2 ad 20 mm longis, 1 ad 8 mm latis, basi obtusis vel 
rotundatis vel latere angustiore acutis, lateris latioris margine 2- vel 3- 
dentatis, angustioris 1- vel 2-dentatis, apice in acumen obtusum integrum 
protractis, tri-triplinerviis, lateris angustioris nervo basal, latioris ad- 
modum altius inserto, venis paucis tenuissimis; stipulis inconspicuis. 
MINDANAO, District of Davao, Mount Apo, at 1725 m elevation, Hlmer 11545. 
This is allied to the last, and has also much the appearance of H. microphyllum 
and #. acrophilum, whose staminate receptacles are unknown so that they may 
belong rather With the present species than with the group in which they are 
placed. From all three, it can easily be distinguished by the leaves. 
7. Elatostema heterophyllum sp. nov. 
Repens, radicans, caulibus dense pilosis: receptaculis staminiferis 
pedunculatis, paucifloris, bracteis exterioribus corniculatis: receptaculis 
pistilliferis sessilibus: foliis parvis, discoloribus, submembranaceis, obo- 
vatis vel ovalibus, marginibus grosse vel modice 1- vel 2-dentatis vel in- 
tegris. 
Apparently always dioecious: staminate receptacles upon slender, suc- 
culent, glabrous peduncles 2.5 to 15 mm long; bracts almost free, the outer 
pair suborbicular, 3.5 to 4 mm long, the conspicuous keel produced into 
a spur, pilose on the spur, densely so on and near the margins, and 
sparingly between; the intervening two pairs shorter and proportionally 
narrower, otherwise similar ; flowers 6, on glabrous pedicels up to 2.5 mm, 
subtended by a single oblanceolate bracteole about 2.5 mm long, densely 
ciliate at the apex and sparingly so on the margins; perianth-segments 
4, oval, one or more of them spurred, about 2 mm long, sparingly pilose 
near the apex; filaments flattened, about 2 mm long, anthers less than 1 
mm long: pistillate receptacles sessile or subsessile (peduncles not over 
0.5 mm), 3 to 4 mm in diameter; formed by 12 or more nearly similar 
bracts, free except at their bases, oblong-lanceolate, acuminate, 2 mm long, 
densely ciliate on the margins; young flowers shortly pedicelled ; perianth 
minute, sometimes ciliate; ovary 0.4 mm long; stigma penicillate. 
Slender, creeping plants 6 to 12 em long, the stems densely ferruginous- 
or white-pilose y leaves subsessile, the lamina almost chartaceous, strongly 
or slightly inequilateral, in general outline obovate or orbicular, 1.5 to 17 
mm long, 1.5 to 9 mm wide, the base on the upper side rounded or some- 
what acute, on the lower extending about 1 mm beyond that of the upper, 
forming an auricle, overlying the petiole and sometimes slightly project- 
ing on its upper side, entire on both margins, on the upper only, or on 
neither, the teeth of the upper margin never more than one, of the lower 
margin usually one, but sometimes two, in size ranging from mere dis- 
continuity to coarse teeth 2 mm wide, the margins of the sinuses, the 
extreme base excepted, making about a right angle with one another, 
leaf-apex nearly always rounded except on leaves dentate on both sides, 
then forming an ovate or lanceolate acumen, obtuse or subacute; upper 
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