172 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [Q. muricatus 
those two. From C. ruvidus it: dffiers in the more numerous, flat and not more 
or less concave ensiform leaflets, which are bristly spinulous on 3 coste, and in 
the spadix with elongate partial inflorescences which bear many remote spikelets. 
From C. radulosus it differs in the leaflets which slightly decrease in length in 
the upper part of the leaf and have the two ultimate leaflets larger than the 
lower ones, and in the much more slender partial inflorescences and spikelets. 
Pirate 32.—Calamus scabridulus Becc, The terminal portion of a leaf ( upper 
surface); the portion of the same following ( under surface); two partial inflor- 
escences with female flowers.—From Riedel’s specimen in Herb. Bece. 
26. CALAMUS MURICATUS Bece., Nelle Foreste di Borneo 609, and in Rec. Bot. 
Surv. Ind, ii, 203. 
: DescripTion.—Slender, scandent. Stem with the sheaths 13-16 mm, thick,  Lea/- 
sheaths flagelliferous, slightly gibbous above, obliquely truncate at the mouth, very 
conspicuously armed with straight, horizontal, subwhorled spines which are 4-5 mm. 
long and rest on approximate, prominent, annular ridges, these being alternate with 
other smaller, sinuous, interrupted ridges or wrinkles, which are armed with very 
small spines or are simply scabrid on their crest; the base of the petiole or the 
apex of the sheath bears many such wrinkles, Ocrea very short, inconspicuous. 
Leaf-sheath flagella filiform, very slender, armed with very fine, small, ternate or half- 
whorled claws. Leaves not cirriferous ; petiole rather long (40 cm.), sub-biconvex 
in section in its upper part, slightly flattish above and convex beneath near the 
base, sparingly  aculeolate on the back and at the margins upwards; rachis 
flat and above bifaced and sniooth, glabrous, armed with small, solitary, scattered 
claws beneath; leaflets not very many, 14-15 on each side, thinly papyraceous ‘ 
very inequidistant, scattered, not distinctly grouped, linear, very elongate, the 
largest, those a little above the base, 35 cm. long, 13-14 mm. broad, gradually 
narrowed to the base, and gradually acuminate at the apex into a subulate bristly 
tip, about the same colour on both surfaces, sub-3-costulate, or with the mid- 
costa rather acute and one distinct acute nerve on each side of it, all the 3 
sparsely bristly-spinulous above, beneath, the mid-costa only bristly ; margins very 
adpressedly and inconspicuously spinulous ; transverse veinlets very minute, much 
interrupted ; the two terminal leaflets smaller than the others and free at the 
base.—Other parts unknown. 
Hasrrar.—Borneo; on Mt, Mattang, near Kuching in Sarawak (Beccari P. B, 
No. 1928.)—Malay name ‘Rotang sakkat.’ 
OsservaTions.—Allied to C. zonatus, but distinct in its larger size, in the 
more powerfully armed  leaf-sheaths, in the longer petioles and larger leaflets 
which are setose on 3 nerves above. The diagnostic characters of ©, murieatus 
are the armature of the leaf-sheaths formed by whorled short spines which rest 
on annuler raised ridges alternating with interrupted wrinkles; the leaves with a 
long petiole and the not numerous, inequidistant, very narrow leaflets, which are 
bristly on 3 nerves above, 
Puare 33,—Calamus muricatus Becc. The entire (sterile) type-specimen in 
Herb. Beccari. : 
