486 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [Q. Henryanus 
side, linear-ensiform, somewhat narrowed towards the base, very gradually acum- 
inate to a long caudate bristly apex, usually with a superficial but distinct inden- 
tation on the lower margin not far from the apex—this.bristly from the indentation 
upwards—thinly papyraceous, green on both surfaces, slightly paler beneath, with 3 
very distinct costae which are smooth or very sparingly spinulous above, fainter and 
furnished beneath, only near the summit, with small approximate subspiny bristles; 
transverse veinlets approximate, very minute above, almost indistinct beneath ; margins 
remotely, very finely and adpressedly spinulous, the lower one slightly thickened and 
bordered in the upper surface with a very narrow shining band; the largest leaflets, 
those a little above the base, 45 cm. long, 2:5 cm. broad: the upper ones er 
smaller and more distant: those of the cirrus abortive, very narrow. 
PLATE 222.—Calamus brachystachys Bece. The entire fruit spadix; the basal 
portion of a leaf with a portion of the sheath; the subcirriferous summit of the same 
leaf; seed entire and longitudinally cut through the embryo. 
191. Canamus Henryanus Becc. in Rec. Bot. Surv. Ind. ii, 199 
Description.—Scandent. Stem’ slender, about 10 m. long ( A. Henry).  Leaf-sheaths 
not seen. Leaves (not seen entire) with the rachis (in a portion probably from near 
the base) rounded beneath, where it is armed along the middle with short, black, 
solitary claws and laterally with some short, straight, horizontal spines, channelled 
above in the centre, and with another narrow channel on each side for the insertion 
of the leaflets; these 32-37 cm. long, 14-16 mm. broad, inequidistant, pale green 
when dry, sub-concolorous und finely striately veined longitudinally on both surfaces, 
linear-ensiform, narrowing towards an acute base and gradually acuminate into a very 
slender, slightly bristly- spinulous point, furnished above with 5 finely spinulous nerves, 
of which the mesial is more prominent and more remotely spinulous than the others 
and the one near each margin fainter than the intermediate ones; in the lower 
surface the five nerves are finer than above and of these two more finely and less dis- 
tinctly spinulous than the others; margins very adpressedly spinulous. Mak spadix 
not seen. Female spadiz not seen entire; partial inflorescences 35 cm. long, very 
strictly paniculate, bearing various erect spikelets; these decreasing in length from 
the base upwards, irregularly and not distichously adpressed to the axis, which 
terminates with a spike longer than the side ones and about one-third the length 
of the entire inflorescence; primary spathes .. .. .; secondary spathes membranous, 
smooth, tubular, slightly enlarged above and extended at one side into a broad 
triangular finely striately veined tip; spikelets furnished with a peduncular portion 
included iv their respective spathes: the lower ones, the largest, 8-9 em. long with 
very many distichous flowers: the upper ones gradually shorter: the uppermost 
with only 2-3 flowers on each side; spathels spathaceous-auriculiform ; involucrophorum 
inserted at the bottom of its own spathe at the base of the one above ( not laterally 
adnate to the axis ) also spathaceous. auriculiform, 2-keeled on the side next to the 
axis; involucre moulded on the involucrophorum with the areola of the sterile 
flower elongate and bearing a persistent callous peduncular suppert to the flower 
about 1 mm. in length. Female flowers erect in the involucres and half enveloped by 
