34 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA, "C. pulaiensis. 
In fact I have identified as C. scabridulus No. 11300 from Sungei Semangat, 
sent to me by Ridley himself. Probably also the Rawang plant which is said to 
have the leafsheaths with transverse ridges, like those of C. rugosus, belongs to 
a species different from C. luridus, According to Ridley C. luridus grows also ia 
Borneo, but I have not seen specimens of it from that country. 
64a. CALAMUS PULATENSIS Becc. n. sp. 
Sheathed stem... Laaf- 
DzscoRIPTION.—A pparently scandent and rather slender. 
Leaves 60 cm. long in the 
sheaths not seen by me, but almost certainly flagelliferous. 
pinniferous part (non-cirriferous); petiole 14 cm. long (in one leaf), 8 mm. broad at 
its base, convex and smooth on the back, flattish on the upper surface, the margins 
not very acute, armed with short, 1-4 mm. long, slender, straight, horizontal spines; 
rachis glabrous, bifaced and with an acute smooth salient angle above, rather 
feebly armed underneath with a single line of very small, rather close, black tipped 
claws; leaflets about 20 on each side, equidistant, closely set (12-15 mm, apart), 
thinly papyraceous, subconcolorous on both surfaces, linear-lanceolate, tapering at the 
base, subulately acuminate, faintly 3—costuiate; on the upper surface the side costs 
are slender, finely and rather closely spinulons, and the mid-costa is sharp and sparingly 
spinulous only near its apex; underneath the 3 coste are not prominent, but when 
seen under a strong lens appear covered with exceedingly minute hairs; sometimes 
some of the secondary nerves are also similarly hairy; transverse  veinlets rather 
distant, sharp, sinuous, much interrupted; margins very minutely, closely, and 
appressedly ciliolate, the cilia ultimately deciduous when the margins appear only 
minutely scabrid; the intermediate leaflets are 17-19 cm. long and 12 mm, broad 
in their central part; the lowest are narrower and slightly shorter, those near 
the summit suddenly smaller; the two of the terminal pair are the smallest and 
free at their bases. Male spadix .... Female spadic simply decompound, rigid and 
straight, one specimen has only 4 partial inflorescences, is about 1 m. long 
including a slender, rigid, apical, 30 em. long flagellum; primary spathes very 
closely sheathing, narrow and elongate; the lowest 17 cm. long, flattened, plano- 
convex in their basal part, biconvex above, acutely two.edged, smooth on the 
axial side, armed externally with small subtuberculiform claws, especially on their 
lower slightly attenuated part, and with a very short triangular entire limb at 
their upper end; partial inflorescences 12-15 cm. apart, erecto-patent, inserted 
a little above the mouth of their respective spathes with a not very strong axillary 
callus; they are 18-20 cm. long, and carry 6-7 spikelets on each side; secondary 
spathes elongate-infundibuliform or subclavate, smooth (not striated; and unarmed, 
sprinkled with small appressed rubiginose scales, truncate and entire at the mouth, 
slightly produced at one side into a short point; spikelets rigid, spreading, 
inserted just at the mouth of their respective spathes with a distinct axillary 
callus: the lower and largest are 4-45 cm, long, have 11-12 bifarious approxi. 
mate flowers on each side: the upper ones somewhat shorter; spathels very short 
and very broadly infundibuliform, obsoletely veined and more or less seabrid- 
furfuraceous, very slightly produced at one side into a short acute point; invo- 
lucrophorum cupular, almost at a level. with its own spathel, with an irregular 
margin usually with two more or less distinct teeth on the side of the neuter 
