C. rhytidomus. | BECCARI. THE SPECIES OF CALAMUS.—SUPPLEMENT, 7 
Surry, PLATE 2.—Calamus Laurentii De Wild. Portion of the sheathed stem 
with the bases of one leaf and one spadix; lower portion of a leaf; terminal part 
of a leaf; upper portion of a male spadix. From the type, Laurent's No. 126 
in the Herbarium at Brussels. 
24. CALAMUS RUVIDUS Becc, 
It has been found again in Sarawak by Hewitt, according to a specimen in the 
Herbarium at Kew, represented by an entire leaf and a complete male spadix. 
The /eaf has five sides leaflets in all and one apical deeply parted, and is on the 
whole 60 cm, long. The leaflets are as in the type, but slightly longer and more 
narrow (3:-40 cm. long and 3 em. broad). The petiolar part is 19 cm. long, 
strongly depressed, flat above, slightly convex below, 5 mm, broad and only 
2 mm. thick, has the margins very sharp and is strongly and irregularly armed on 
the lower surface with claws of which some are solitary and others more or less 
confluent or digitate; the rachis has a sharp salient angle above and is irregularly 
armed with rather strong claws below. The leaf-sheath, from what can be judged 
by a small portion, is rather strongly spinous and has at the mouth a distinct 
glabrous, dry, ligular part, The sheathed stem is apparently mure than ? cm. in diameter. 
The male spadiz forms a nodding panicle three times branched, about 80 cm. long, 
and is divided into several approximate, gradually diminishing, partial inflorescences 
and ends in a filiform, finely aculeolate, rudimentary flagellum. The lowest spathe is 
flattened, sharply two-edged and closely sheathing in its lower part, somewhat 
broadened above and lacerate at its upper end,—which otherwise would be 
acuminate, and is covered with small claws on its back. The other spathes are 
also tubular in their lower part, somewhat enlarged, and are split above and prickly 
on the back and have the apex acuminate and more or less marcescent. Partial 
inflorescences arched, rather dense, gradually smaller, the lower ones about 30 em. 
long, with in their lower part 4-5 gradually diminishing compound spikelets and 
some simple spikelets above; secondary and tertiary spathes scabrid-papillose, tubular 
at their bases, suddenly broadening into a short infundibular limb, which is ciliolate 
at the mouth and has the point subulate and more or less marcescent. Spikelets 
arched, small, the lowest and largest 2-2:5 cm. long, their axial part slender, and 
Howers regularly  bifarious; ^ spathels ^ scabridulous-papillose, ^ concave-subbraetei- 
form or very briefly infundibuliform, ciliolate and prolonged into a subulate 
spreading point; involucre cupular, subtrigonous with the posticous points acute. 
Male flowers small, very narrowly ovoid, acute, 3 mm. long; the calyx tubular 
with 3 deltoid acute teeth, strongly striately veined; the corolla dull outside, longer 
by a half than the calyx. 
Hewitt assigns to €. ruvidus the Malay name “Rotan buloh.” 
94a. CALAMUS RHYTIDOMUS Becc. n. sp. 
C. ruvidus Becc. in Rec. Bot. Surv. Ind. ii, 202 (as to description 
of the leaf-sheaths only). 
Description.—Scandent slender. Sheathed-stem 12-17 mm. in diameter. Leuf-sheaths 
not or slightly gibbous above, very obliquely truncate at the mouth, distinctly striate 
longitudinally, armed rather densely with scattered, very short (1-5 mm. long), 
triangular, ascendant spines, which above have a swollen base and are flat 
