412 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [C. trispermus 
nerves slender; transverse veinlets very distinct, rather close, sinuous and interrupted; 
margins acute, ciliated mainly near the base with remote spinules. It seems a 
general rule that the radical leaves in the species of this group are not only non- 
cirriferous but also that their leaflets have more primary nerves than those of the 
leaves of the upper part of the plant, and furthermore have more nerves with 
bristles or spinules. 
Prate 178.— Calamus spinifolius Bece. An entire leaf (upper surface), probably 
a radical one.—From Vidals No. 3954 in Herb. Kew. 
Puate 179,—Calamus spinifolius Bece. Portion of the sheathed stem with an 
entire male spadix in flower; the summit of a leaf.—From  Lohers No, 1373 in 
Herb. Kew. 
149. CALAMUS TRISPERMUS Becc. in Perkins Fragm. Fl. Philipp. i. 46, 
 DzscnrPTION,—ÀA pparently scandent and rather large. Leaf-sheaths . , 
Leaves of the upper part of the plant (the only leaf seen by me probably a m 
one) non-cirriferous; its rachis unarmed, and slightly convex beneath and acutely bi- 
faced above; leaflets few inequidistant, approximate in pairs on each side of the 
rachis, somewhat concavo-convex, oblanceolate, broader above the middle, rather 
suddenly contracted at the summit into an acuminate and at the sides bristly tip, 
gradually narrowed to the base, 30-32 cm. long, 6 cm. broad, the two of the 
terminal pair somewhat smaller and free at the base, distinctly  5-costate, the 
costae acute in the upper surface, very slender beneath, naked on both; transverse 
-veinlets very slender, but very sharp on both surfaces, extremely approximate and 
much continuous margins finely closely and adpressedly spinulous, the lower 
margin on the upper surface usually bordered with a narrow shining band. Male 
epadiz . . . . . Female spadiz apparently panicled and large (not seen entire); 
primary spathes . . . . .; partial inflorescences 40—45 em. long with 5-6 spikelets 
on each side; secondary spathes about 5 cm. long in the exposed part; tubular, 
slightly enlarged above, very closely sheathing, flat on the inner side towards the 
base, with a few, short, hooked prickles on the back near the summit, horizontally 
truncate and fringed, paleaceous at the mouth, prolonged at one side into a short 
triangular acute point; spikelets inserted at the mouth of their own spathe, ascendent, 
vermicular, large, robust, slightly flexuous; the lower ones 12-16 cm. long with 
12-15 flowers on each side; the upper ones somewhat shorter;  spathes smooth, 
coriaceous, shortly asymmetrically infundibuliform, slightly prolonged at one side into 
a triangular point, horizontally truncate and entire at the mouth; involucrophorum 
lateral attached in the hollowed base of the spathel above its own and almost exsert 
from this, two-keeled and with two prominent acute teeth on the side next to the 
axis; involucre irregularly cupular, deeply excavate and acutely bidentate on the side 
of the neuter flower of which the areola is lunate and sharply bordered. Female 
flowers flatly bifarious, rather distant, about 6 mm. long. Fruiting perianth expla- 
nate (not pedicelliform); the calyx coriaceous divided almost to the base into 3 ovate 
acute parts; the segments of the corolla narrower and about as long as the lobes of 
the calyx. Fruit broadly obovoid, suddenly and rather acutely beaked, 18 mm. long, 
12-18 mm. broad (when not quite mature); scales in 15 longitudinal series and each 
