LC. scabridulus | BECCARI. MONOGRAPH OF THE GENUS CALAMUS. 171 
the Records” l. c. belong to a male specimen preserved at Kew, which I 
doubtfully referred to that species, but which I now think it safer not. to take 
into account. This last specimen was gathered by Motley at Banjarmassing in 
Borneo. | 
PLATE 31.—Calamus ruvidus Bece. The complete type-specimen preser ved at 
Kew. ' 
25. CALAMUS scaBripuLus Becc. in Rec. Bot. Surv. Ind. ii, 208. 
Descriprion.—Scandent, slender or of moderate size. Leaf-sheaths . M Be 
Leaves not cirriferous; petiole . . . . o ; rachis of the upper part of 
‘the leaf armed beneath with rather stout solitary black-tipped claws; leaflets not 
very nnmerous, subequidistant, rather remote, 4-7 cm. apart, flat, papyraceous, 
rigidulous, narrowly lanceolate or .ensiform, almost equally narrowed to both ends, 
very gradually acuminate into & subulate apex, 40-45 cm. long and 2-2°5 cm, in 
‘breadth, the upper ones somewhat shorter, the two of the terminal pair shortly 
connate at the base, 23-25 cm. long, but a little broader than the others; all 
almost concolorous, shining and very finely longitudinally striate under the lens 
on both surfaces, furnished above with 3 rather acute  bristly-spinulous coste and 
with in addition another more slender naked nerve near the margin; on the 
under surface the 3 coste less prominent than above and sparingly spinulous near 
the apex; transverse veinlets very distinct, sinuous and interrupted; margins 
indistinctly, remotely and appressedly spinulous. Male spadiz . . . . . ” 
Female spadiz (not seen entire) with very slender and long (50 em.) partial 
inflorescences, these terminating in a short (3-4 cm.) filiform, very acute, scabridul- 
ous appendix and bearing about 10 spikelets on each side; secondary spathes very 
narrowly tubular and very closely sheathing, somewhat clavate in their upper part, 
flattish inside at the base, 1°5-2°5 em. long, scabrid, finely aculeolate upwards on 
the back, entire, obliquely truncate and ciliated at the mouth, where produced. at 
‘one side into a lanceolate and acuminate point; spikelets vermicular, slender, 
slightly arched, attached just above the mouth of their own spathe and deflexed 
by the pressure of a very distinct axillary callus; the lowest spikelets, the largest, 
6 cm. in length, with above 20 distichous flowers on each side, the upper ones 
gradually smaller, those near the apex 2°5 em. long with proportionately fewer 
flowers; spathels very broadly infundibuliform or concave and sub-bracteiform, pro- 
longed at one side into an acute tip, densely scabrid-papillose and strongly 
striately veined; involucrophorum unilaterally subcupular, almost exserted from its 
own spathel and attached at the base of the one above ; involucre asymmetrically 
cupular, obscurely lobulate; areola of the neuter flower relatively large, broadly 
ovate, sharply bordered with a discoid subcircular callus in its centre. Female flowers 
small, 2:5 mm. long (perhaps when not fully developed), conic-ovoid, acute; the 
calyx with a callose base, strongly striately veined, broadly 3-toothed; corolla 
twice as long ss the calyx. Fruit not seen. 
Hasrrar.—Billiton Island in the Java Sea (Riedel 1876, in Herb. Becc.)—Malay 
name ‘Rotang mengkekeran’ (Keker = a file). : 
OzservaTions.—This species is very nearly allied to 0. ruvidus and especially to 
C. radulosus, and the secondary spathes and the involucres are very ‘scabrid as in 
ANN. Roy. Bor. Garp. Catoutra Vor. XI. 
