C. Delessertianus. ) BECCARI.. MONOGRAPH OF THE GENUS CALAMUS. o7T 
32-35 cm. long, 20-22 mm. broad, rather suddenly narrowed at the base, callous at 
the insertion in their upper axilla next to the axis, and in the small cavity formed 
underneath by the folding of the base of the leaflets where they are rusty-furfuraceous,. 
quite glabrous on the remainder, pale-green when dry and subconcolorous on both 
surfaces, shining above, opaque beneath, long and gradually narrowed into a slightly 
bristly and not very acuminate tip, this rather deeply indented on its lower margin, 
sub-5-costate, or with 3 acute costae in the centre and a rather distinct secondary 
nerve on each side of them; further another secondary nerve runs alongside the 
lower margin; on the upper surface the 3 main costae are furnished with long 
bulbous bristles, which are less numerous on the mid-costa than on the side ones and 
are brown at their base and lighter upwards; the other two nerves are usually naked 
but sometimes also spinulous; on the lower surface the nerves are all less prominent 
than above and only the mid-costa is bristly; transverse veinlets not very  conspic- 
uous; margins closely spinulous throughout and contrary to the rule the spinules - 
more spreading, closer and stronger near the base than towards the summit; some- 
times a small spinule occurs at the base of the mid-costa in the upper surface as in 
C. tenuis, Male spadix . .. . . . Female spadiz probably rather large, not seen. entire; 
in one specimen of a partial inflorescence with a primary spathe, this coriaceous, pale- 
green even when dry, tubular-cylindraceous, closely sheathing, slightly enlarged above 
where split on one side, truncate and naked at the mouth, slightly prolonged at one 
side into a triangular keeled point; its surface almost polished and glabrous, smooth 
lower down and rather densely armed in its upper portion with very small, very short, 
broad-based, horizontal or slightly hooked prickles which are more numerous near the 
summit; the partial inflorescence is attached inside near the mouth of its spathe, arising 
erect at first, then spreading, 30 cm. long, with 13 distichous spikelets on each side; 
secondary spathes tubular-infundibuliform, loosely sheathing, covered with a  rusty- 
furfuraceous removeable scurf, unarmed, horizontally truncate at the mouth, where — 
(during anthesis) closely ciliately paleaceous, not or indistinctly apiculate on one 
side; spikelets inserted just at the mouth of their respective spathes, with a distinct 
axillary callus, rather slender but rigid, arched, spreading or deflexed, the 2-3 which 
are near the base slightly branched, the next above these about 6 cm. long with 
about 20 flowers on each side, the others gradually diminishing, those of the summit 2 
cm. in length with only 8-9 flowers on each side; spathels very shortly asymmetri- 
cally infundibuliform, striately veined, truncate and ciliolate at the margin, prolonged 
at one side into a broad acute deflexed point; involucrophorum almost exsert from its 
own spathel, attached laterally at the base of the one above, subbracteiform, subannular, 
unilaterally evolute, flattish; involucre like the involucrophorum but evolute on the 
opposite side. Female flowers very regularly bifarious, rather approximate, inserted at an 
angle of 45°, about 3 mm. long, subcylindraceous or slightly conic; the calyx tubular, 
flat, smooth and callous at the base, its tube strongly striately veined with 3 short 
broad acute teeth; the segments of the corolla acute, slightly longer than the calyx; 
the stigmas recurved lamellose. Neuter flowers slender, as long as the female ones but : 
with the corolla twice as long as the calyx.—Other parts unknown. 
HasrrAT.—This fine species is probably a native of the southern provinces of the 
Indian peninsula. In the Herb. Delessert it is labelled “ C. gracilis Rozb.; Ind. Orient., 
Dr. Roxburgh.” 
