502 
ROBINSON. 
from some of the collections here cited less than they differ from one another. If 
the present disposition of the Philippine plants were considered final, the Celebes 
species would be cited as a synonym : but for the venation, its resemblance to E. 
laxum is equally great. 
2. Elatostematoides mindanaense sp. nov. 
Inflorescentiis staminiferis brevibus, . cymoso-paniculatis, pistilliferis 
exinvolucratis, sessilibus, perianthio 5-partito ovarium paullo superante : 
foliis oblique oblanceolatis vel elliptico-oblanceolatis, basi inaequilatera 
acutis vel subobtusis, margine serratis, apiee longiter acuminatis. 
Staminate inflorescences axillary, less than 1 cm long, cymose-panicu'- 
late, shortly peduncled, the pedicels about 2 mm long ; perianth-segments 
oblong-oblanceolate, 2- mm long, obtusely and shortly acuminate, ciliate; 
the filaments slightly longer, the anthers 1 m m long: pistillate inflores- 
cences axillarjq often crowded, exinvolucrate, simulating a -receptacle, 
2 to 3.5 mm in diameter; the flowers on pedicels about 1 mm long; 
perianth deeply 5-parted, the segments broadly oblanceolate, 0.7 to 0.8 
mm long, barely acuminate or corniculate, pilose and somewhat densely 
ciliate; staminodes present but minute; ovary compressed-ovoid, slightly 
shorter than the perianth; achenes tuberculate; stigma small, penicillate. 
Plants somewhat rigid, 13 to 40 cm high, simple or somewhat branched, 
the stems somewhat densely 'pubescent especially at the apex: leayes 
alternate, .the petioles 1 to 3 mm long, the lamina obliquely oblanceolate 
or elliptic-oblanceolate, 3.5 to 10 cm long, 6 to 25 mm wide, chartaceous 
or firmly membranaceous, the base inequilateral, one side usually pro- 
duced beyond the other, acute or subobtuse, the margins dentate except 
at the base, the apex forming a slender dentate acumen 5 to 20 mm long; 
main nerve of the wider side arising about 1 mm from the base and only 
obscurely connected with the succeeding 4 or 5 veins the lowest of which 
are equally prominent ; main nerve of narrower side arising 5 to 10 mm 
from the base and continued into the acumen, with a much fainter subbasal 
nerve which forms frequent connections with it ; under surface pubes- 
cent at least on the veins, upper glabrous, both with numerous cystoliths; 
stipules 4 to 7 mm long, linear-lanceolate, very acutely acuminate. 
Mindanao, District of Davao, Catalonan, Copeland 935 (staminate), 936 (pis- 
tillate, type). The staminate plants are larger with larger leaves. 
3. Elatostematoides laxum (Elmer) comb. nov. 
Elatostema laxum Elmer Leafl. Philip. Bot. 2 (1908) 465. 
Inflorescentiis haud involucratis ; staminiferis , brevibus; pistilliferis 
globosis, sessilibus sed haud receptaculum efformantibus, floribus pedicel- 
latis, braeteatis, perianthio alte 5-partito, segmentis lanceolatis vel 
oblanceolatis, usque ad 1 mm longis, non vel brevissime acuminatis; apice 
aliquando ciliatis, ovario subaequalibus, staminodiis minutis, stigmate 
penicillato : foliis alternis, oblique' lanceolatis vel ovatis, basi obtusis vel 
