ei leucotes. | . BECCARI MONOGRAPH OF THE GENUS CALAMUS. 309 
OssrRvATIONS,— This is a species very distinct by the short contracted p spadix 
with large concave imbricate spathes, recalling those of some species of Daemonorops ; 
by the leaves with grouped large many-costate lanceolate or oblong leaflets, which are 
conspicuously white beneath; and by the small spikelets with very acutely zig-zag 
sinuous axis. The type-specimen preserved at Kew consists of the upper part of 
a female spadix with rather young flowers and of one entire leaf; another portion 
of a leaf, detached from the above specimen, is in the Calcutta Herbarium ; in this 
the leaflets are larger than in the other, The Kew specimen has 2 leaf-sheaths, 
one of these bears the spadix; the other, the higher one, has a very rudimentary 
filiform spadix 5 cm. in length. 
PrarE 119.—Calamus hypoleucus Kurz. The entire type-specimen in the Herbarium 
at Kew. i 
98. CALAMUS LEUCOTES Becc. sp. n. | | 
C, hypoleucus Kurz Fl. Brit. Burma ii, 523 (as to the male spadix 
only). | | 
Deemonorops hypoleucus Kurz in Journ. Asiat. Soc. Beng. xliii. II (as to 
plate xix only). 
Description.—Probably scandent. Sheathed stem about 2 cm. in diam. Leaf 
sheaths not gibbous above (sometimes flagelliferous? ) completely covered with two 
kinds of spines; some of them rather large, flat, laminar, elastic, sublanceolate, 3-4 
mm. broad at the base and up to 3 cm. long, scattered, ascendent, shining and 
brown, while others, which are far more numerous, are smaller, very narrow, acicular, 
ascendent or spreading and never deflexed; near the mouth the spines are more 
crowded, very narrow, needle-like and as much as 7-8 cm. long. Ocrea short, hidden 
amongst the mass of the spines, Leaves rather robust and relatively short, not 
cirriferous; petiole robust, 1 cm. thick and rather long (20 cm.), flat and smooth 
above, rounded beneath where covered with numerous small spines of various sizes 
Some of them not more than 5-6 mm. long, spreading or horizontal, not deflexed 
and broad-based; others, those along the middle, strong, solitary and hooked; the 
margins acute and also prickly; rachis in its upper portion acutely bifaced above, 
and rather convex beneath, where strongly armed with scattered or irreguiarly 
aggregate rather robust claws; leaflets large, not numerous, very  inequidistant, 
irregularly grouped into various fascicles of a few, with long (15-18 em.) vacant 
‘spaces amongst them, and a terminal fascicle of 4; papyraceous, rigid, longitudinally 
plicate, lanceolate or elliptic-lanceolate, almost equally narrowed to both ends, acute 
at the base where there is a distinct callus at its axilla and another beneath in the 
hollow formed by the plicature of the limb, acuminate at the summit into a subulate 
limb, conspicuously discolorous, green, glabrous and opaque above, covered beneath 
"ith a thin crustaceous chalk-white indumentum, with 7-8 almost equal costae; these 
naked on both surfaces, raised above and almost. depressed beneath; the largest 
leaflets 40 cm. long, 5'5 em. broad; the two of the terminal pair very shortly united 
by their bases. Male spadiz probably elongate (not seen entire by me), suprade- 
compound, with a short flattened 1 cm. broad peduncular portion which is densely 
