174 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA, [C. radulosus 
OssERvaTIONS,—My specimen No. 1921 is sterile. The Calcutta specimen ‘does 
not essentially differ from it; only the annular ribs or ridges of the leaf-sheaths 
are a little more prominent and bear here and there some rudimentary spines in 
the shape of conical pungent warts; furthermore the leaflets are quite smooth in 
the upper surface, and no hairs or spinules are visible on the mid-costa. It is 
very closely allied to €. muricatus, but is more slender and delicate in every part 
and has the leaf-sheaths spineless or almost so. 
Prats 34.—Calamus zonatus Becc. The Calcutta specimen with a male spadix 
devoid of flowers. : 
28. QCarnAMUS RADULOSUS Becc., in Hook. f. Fl Brit. Ind. vi, 443, and in 
Rec. Bot. Surv. Ind, ii, 203. i 
Descrrprion.—High scandent, of moderate size. Sheathed stem 2:5-3 cm. in diam. 
Leaf-sheaths obliquely truncate and naked at the mouth, very densely armed with 
very short and broad (4-6 mm. long), sub-triangular, scattered spines, which are 
obliquely inserted and ascendent (never deflexed), conspicuously swollen above and 
flat beneath. Leaf-sheath flagella as long as the leaves. Leaves rather large, 1:2-1°5 
m. long; petiole obsolete; rachis bifaced above, armed below with  black-tipped 
always solitary claws, which are numerous and pluriseriate lower down and on 
a single line in the upper portion; leaflets numerous, equidistant, rather closely set 
(2-3 cm. apart), papyraceous, green, glabrous, rather shining and almost of the same 
colour on both surfaces, under the lens finely longitudinally striately veined on the 
lower one, ensiform, finely acuminate at the apex, gradually narrowing at the base, 
furnished with 3 acute but not very strong coste and with another faint secondary 
nerve near the margin, the mid-costa alone sometimes bristly, the 3 coste rather 
closely bristly beneath towards the apex, but fainter than above; transverse 
veinlets very sharp, much interrupted; margins apparently naked, but under the 
lens very adpressedly, minutely and remotely spinulous; the largest leaflets, the mesial 
45 cm. long and 25 mm. broad at most, the lowermost a good deal narrower uS 
the mesial, the upper gradually decreasing in length and breadth; the two of 
the terminal pair the smallest, 13-15 cm. long and 8-12 mm. broad, shortly 
connate at the base. Male spadiz ultradecompound. Female spadix very long 
(3:5-45 m., Scortechint) and robust, with many remote partial inflorescences, sub- 
flagelliform at the apex and terminating in a slender, tail-like, unsheathed Moers 
about 20 cm. long; primary spathes very elongate, closely sheathing thinly 
coriaceous; the basal one about 50 cm. long, somewhat flattened, a 15 mm 
broad, acutely two-edged, obliquely truncate at the mouth, armed, mainly on "hs 
outer side, with small scattered hooked spines; the upper spathes cylindraceous, often 
split longitudinally in the upper part, where usually decayed and faling to T 
but not fibrous, aculeate throughout, but not seabrid; unsheathed axial portions of 
the spadix, between two partial inflorescences, elongate, flat on the inner and convex 
on the outer side where armed with small scattered claws; partial inflorescences 
very long, the lowest as much as 1 m., the uppermost 30 cm, in length t 
distichously many (10-15 ən each side) spikelets; secondary syátlien « diis 
infundibuliform, somewhat enlarged above, where later usually split longitudinall 
on the inner side, obliquely truncate, searious and lacerated at the moni 
