€. Kingianus} BECCARI. MONOGRAPH OF THE GENUS CALAMUS: 197 
Description.—Slender, scandent, as thick as a man’s little finger at most. Leaf- 
sheaths obliquely truncate at the mouth, fugaciously tomentose, densely armed with 
very unequal spreading straight subulate spines, which are short or 2-3 cm. long, 
swollen and light-coloured above at the base, otherwise glossy, and of a leaden 
schistaceous colour. Leaf-sheath flagella slender, filiform, armed with small solitary 
or half-whorled claws. Leaves rather short (40-60 cm. long) not cirriferous; petiole 
short or almost obsolete, channelled above, rounded on the back, armed at the 
sides with some straight, 5-10 mm. long, spreading conical  subulate dark- 
tipped spines; rachis dotted with brown deciduous scales, bifaced above, rounded 
beneath, where irregularly armed with small scattered solitary geminate or ternate 
black-tipped claws; leaflets not many, 12-13 on the whole, of which 4 somewhat 
more remote than the others and approximate at the apex, of these the two terminal 
entirely free at the base; those of the basal pair opposite; the intermediate ones 
irregularly and remotely alternate; they vary from 15 to 30 cm. in length and 
10-12 mm. in breadth and are narrow, linear-ensiform and attenuate at the base, 
acuminate and bristly-penicillate at the apex, almost papyraceous, rigidulous, glabrous 
.and about the same colour on both surfaces, but sprinkled beneath with small scales 
which are visible under a lens, furnished with an acute mid-costa and 1-2 fine 
weaker nerves on each side of it—all naked on both surfaces; margins somewhat 
thickened by a slender nerve running alongside and appressedly bristly-ciliate only 
near the apex and smooth at the base; transverse veinlets sharp, rather remote 
‘and much interrupted, Other parts unknown. 
Hasitat.—Sumatra, Praetorius; also in Borneo on thé River Dussoon, Korthais 
according to Blume. 
OxsERVATIONS.— Very imperfectly known. Blume says that the specimens from 
Sumatra agree with those from Borneo, and that only the leaves and leaflets of the 
first are more robust; nevertheless I entertain some doubt about the Bornee 
specimens, and I consider as typical those of Praetorius from Sumatra, of which I 
have seen one, kindly sent to me from the Leyden Herbarium, In this specimen the 
sheathed stem is 7-8 mm. in diameter; the leaves are almost without a petiole and 
bear five very narrow leaflets on each side with other four approximate at the top as 
described above. OC. schistoacanthus seems related to C, javensis; but its true affinities 
in the absence of the spadices remain uncertain. 
PLATE 52.—Calamus schistoacanthus B/. The entire type-specimen of Praetorius, 
from Sumatra, in the Leyden Herbarium, 
4l. Catamus Kryeranus Becc. sp. n. 
Description.—Slender, probably scandent, Sheathed stem 10-12 mm. in diam. 
Leaf-sheaths cylindrical, strongly gibbous above, covered with a thin ashy-brown 
scurfy-crustaceous indumentum, very densely armed with rather short unequal 
slender laminar horizontal spines, which often form short interrupted very approxi- 
‘mate and sometimes crested ridges. Ocrea inconspicuous, Leaves not cirriferous, 70 cm. 
long on the whole; petiole 16 cm. long in one leaf, slightly channelled near the 
‘base and otherwise flat and naked above, sparingly armed at the sides and along 
