C. laxiflorus.) BECCARI, THE SPECIES OF CALAMUS.—SUPPLEMENT. 13 
furfuraceous in the interstices. The ocrea is biauricled, 2-2°5 cm. long.; the auricles 
are acuminate, dry, thinly membranous, glabrous and deciduous, Leaves elongate 
(non-cirriferous), about 1 m. long in the pinniferous part; the petiole is 30 cm. 
long (in one leaf), 5 mm. broad, flat and smooth above, convex underneath where 
armed with very short, scattered, tuberculiform but pungent prickles; the 
rachis is glabrous, armed throughout underneath with scattered diminutive claws, 
and with a salient smooth angle and flat side faces above. Leaflets very numerous, 
equidistant, inserted at a very acute angle, of a thin herbaceous texture, and of a 
very dark colour when dry, narrow, long and tapering from about the middle 
to a very acute base and above very gradually to a very fine and long 
capillary tip, sharply 3-costulate on the upper surface with the cost, especially 
the lateral, furnished with a few distant spinuliform bristles; on the lower surface 
the three coste are very closely covered throughout with minute hairlike ascendant 
spinules; the margins are very minutely appressedly and inconspicuously spinulous ; 
transverse. veinlets very sharp, much interrupted; the lower and intermediate leaflets 
are 30-35 em. long and 12-15 mm. wide, towards the upper end becoming 
gradually smaller; the uppermost are 12-15 em. long and very narrow.  Spadices 
unknown. 
HasrraT.—Collected in Dutch Borneo by  Zejsnann. No. 16323 in Buitenzorg 
Herbarium, without precise locality. Malay an name “ Rotan padaak.” 
OBSERVATIONS.—l have seen of this only the uppermost part of a plant, but no 
spadices or fruits; its affinities, however, are evidently with O. rugosus, and allied 
species. It is distinguishable by its leaf-sheaths which resemble a rough rasp, 
being armed with very minute ascendant trianguiar spines; by the membranous 
glabrous biauricled ocrea; by the very numerous herbaceous, equidistant, gradually 
decreasing, narrow, and long leaflets, which end in a capillary apex, are distinctly 
3-costulate, and have the 3-coste covered throughout on the lower surface with 
minute, very approximate, spinules, and assume a very dark colour in the herbarium 
specimens. See observations under C. sphaeru/iferus. 
Surry. PrarE 6.—Calamus spinulinervis Bece. The type specimen No. 16323 in 
Buitenzorg Herbarium. 
29d. CaLAMUS LAXIFLORUS Becc, n. sp. 
'  DzscarPTioN.— Apparently slender or very slender. Stem... Leaf-sheaths not seen 
by me but almost certainly flagelliferous, ^ Leaves (not cirriferous) delicate and 
elongate, with rather numerous equidistant leaflets; petiole. , . ; racbis glabrous 
with a salient smooth angle above and slightly concave side facets, armed 
relatively powerfully with several, scattered, usually solitary or sometimes geminate 
claws; leaflets equidistant, not very closely set, 3-3-5 cm. apart, elongately linear- 
lanceolate, almost equally attenuated at both ends, the base acute, gradually 
acuminate into a long subulate bristly tip, thinly papyraceous, rigidulous, concolorous 
and almost glossy on both surfaces, distinctly 3-costulate; the side costæ slender, 
remotely bristly from near the base, the mid-costa with a few bristles only near the 
apex; the undersurface is furnished usually with a few bristles on the mid.costa 
and occasionally with a straggling bristle on the side coste; transverse veinlets 
