210 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [/). acamptostachys: 
scattered claws. Leaflets numerous, subequidistant, 3-5 cm. apart, sometimes obscurely 
paired on each side, elongate-lanceolate, those of one side conspicuously shorter and. 
also slightly broader than those of the other side, those of the right-hand side 
being 31-32 cm. long, 25-30 mm. broad, and the others 40-42 cm. long and 
22-28 mm. broad; they are firmly papyraceous, more or less plicate, almost 
glossy and concolorous on both surfaces, broadest about or a little below their 
middle and thence tapering towards the base and upwards acuminate to a subulate 
and caudiculate tip that is bristly at the sides; on the upper surface they are sub- 
tricostulate with the mid-costa prominent, sharp, and very sparingly spinulous only 
near the apex; the side costae very slender and smooth; secondary nerves few, 
inconspicuous; the under surfaco quite smooth; transverse veinlets innumerable, 
very minute, subpunctiform and immersed in the parenchyma; margins very minutely, 
appressedly and remotely spinulous. Male spadiz . . . . Female spadiz very rigid, 
forming a dense, strict, narrowly cupressiform panicle: that seen by me, which I do not 
know if it be entire, is 40 cm. long, has 6 erect very appressed, gradually diminishing 
partial inflorescences; primary spathes deciduous; the main axis very rigid, subterete 
or slightly flattened, fugaciously  furfuraceous; the internodes not swollen at the 
junctures and not marked by depressions caused by the adjoining parts; partial 
inflorescences not callous at their insertion, ovate in outline, the lower 10-13 em. 
long with 6-7 very regularly pinnately set spikes on each side that are inserted at 
an augle of 45° and speedily decrease in length and number of flowers from the 
base towards the summit; secondary spathes have a shortly infundibular or subannu- 
lar limb, which is obliquely trancate at the mouth, and produced at one side into a. 
triangular, dry, thinly membranous, acute or acuminate point and is often more or 
less split; the spikelets are rigid, rather thick, with biseriate, slightly sssurgent 
flowers; the lower spikelets are 5-6 cm. long and have 6-7 approximate 
flowers on each side; the others are gradually sborter, while those of the upper 
extremity are only 1-2 em. long and have 4-6 flowers in all; the axes of the 
spikelets are strongly and closely zig-zag sinuous; spathels  fugaciously furfu- 
raceous, shortly, broadly and unilaterally infundibuliform, produced at one side into 
a dry, membranous, triangular, acute, usually split point, that subtends its own 
flower; involucrophorum shortly and broadly infundibuliform, truncate, obsoletely 
keeled on the posticous side, exserted from its own spathel; involucre immersed in 
the involuerophorum. unilaterally cupular, lunately emarginate on the side of the 
neater flower, of which the areola is conspicuous, broadly ovoid or sublunate and very 
sharply bordered. Female flowers ovoid, 7 mm. long; the calyx shortly cauipanulate 
or eyathiform, slightly 3-toothed, very soon split into 3 parts; the corolla not quite - 
twice as long as the calyx, deeply divided into 3 ovate, acute, very soon longi- 
tudinally lacerated segments. The very young fruit is globose-ovoid and narrows 
into a conical thick style, which is crowned by the acute recurved stigmas, 
Hasitat.—Borneo: Mount Mattang near Kuching, collected in Sept. 1905 by H. N. 
Ridley, (No. 12395 in Herb, Kew.). 
OnsERVATIONS.— This species is characterized by the subequidistant, relatively large 
and broad, elongate, lanceolate leaflets, but especially by the very rigid, strict, 
eu iform female spadix which has the secondary spathes and the spathels almost 
