158 NEW OR NOTEWORTHY BORNEAN PLANTS. 
inflorescences beimg also much longer, up to 2.5 cm. in length. The 
peduncles are also shorter in the present species and are entirely 
glabrous. In all the Malayan material representing M. palustris 
that 1 have seen the peduncles are furfuraceous. 
Mapania gracilipes sp. nov. § Pandanophyllum. 
Caudex brevis, circiter 1 cin. crassus; follis numerosis, circiter 
60 cm. longis, 1 cm. latis, deorsum vix angustatis, partibus infer- 
ioribus plicatis, apice longe tenuiterque caudato-acuminatis, margine 
obscure serrulatis; scapis tenuibus,, 12 ad 20 cm. longis, vix 1 
mm. diametro, basi squamis paucis oblongis 5 ad 13 mm. longis. 
instructis; capitulis solitariis, circiter 1 cm. longis, spicis propriis 
inter se vix distinctis, squamis exterioribus oblongo- ‘ovatis, capitula 
aequantibus ; capitulis fructiferis ovoideis, circiter 1.5 em. diametro 3 
acheniis ovoideis, nigris, osseis, 2.5 mim. longis, breviter apiculatis. 
Caudex short,, about 1 em. in diameter. Leaves numerous, 
about 60 cm. long, 1 cm. wide, 3-nerved, pale-grayish when dry, the 
basal portions straw-colored, darcy narrowed below, the apex 
gradually narrowed in a long, slender, caudate, denticulate acumen, 
the margins and the midrib beneath in the upper part obscurely 
serrulate. Scapes several, lateral, very slender, terete, 12 to 20° 
cm. long, scarcely 1 mm. in diameter, subtended at the base by few, 
oblong, 5 to 15 mm. long bracts, each scape bearing a solitary head 
about 1 cm. long, the head made up of several spikes which are 
searcely distinct; external scales oblong-ovate, about 1 cm. long, 
brownish, equalling the head in length; ‘fruiting heads ovoid, about 
1.5 cm. in diameter and 1 cm. in “length. Achenes obovoid, lax, 
bony, 2.6 mm. long, shortly apiculate. 
British North Borneo, near Sandakan, Ramos 1855, December, 
1920. In damp forests at low altitudes. This species is well 
characterized by its narrow leaves; its very slender elongated scapes ; 
and its small heads, the latter in anthesis about 1 cm. long, the 
outer bracts as long as the head. In fruit the heads appear as if 
they were made of three or more spikes, but these spikes are scarcely 
distinct from each other. The bony achenes are but 2.5 mm. in 
length, and are very shortly apiculate. It is probably most closely 
allied to Mapania debilis C. B. Clarke. 
Mapania heterocephala sp. nov. § Pandanophyllum. 
Caudex brevis, circiter 1.5 cm. crassus; foliis numerosis, 
pallidis, 1-nerviis, circiter 85 cm. longis, 2.5 ad 3 cm. latis, deorsum 
leviter angustatis, partibus inferioribus circiter 2 cm. latis, sursum: 
eradatim angustatis, longe caudato-acuminatis, margine et costa 
subtus in partibus superioribus serrulatiis; scapis paucis, usque ad 
9 cm. longis, 1.5 mm. diametro, partibus infertoribus (2 ad 3 em.) 
bracteis numerosis imbricatis instructis; inflorescentiis spiciformi- 
bus, solitariis vel trinis, cylindraceis, circiter 3 cm. longis, 8 mm. 
diametro; bracteis numerosis, imbricatis, circiter 13 mm. longis, 
vour. Straits Branch 
