14 ANNAES OF THE ROYAL BOTANIC GARDEN, CALCUTTA. C. laevigatus. 
Calami sp. Griff. in Cale. Journ. Nat. Hist. v, 72, and Palms Brit. Ind. 
2 (last 5 lines.) 
Ceratolobus laevigatus var. angustifolia Becc. in Hook. f. l. c. 
Ceratolobus subangulatus Becc. in Ann. Roy. Bot. Gard. Cale, XI (Suppl. 
II. 
Calamus subangulatus. Miq. Prodr. Fl. Sum. 256, 594. 
DescrIPrIoN.--Slender and apparently not very high scandent (275—3 m. high— 
Ridley). Sheathed stem 8—14 mm. in diameter. Leaf-sheaths strongly gibbous above, 
covered with a tobacco-coloured fugacious scurf, brown when dry, often boldly, but 
at times faintly, striate-pluricostulate, armed with scattered, occasionally subconfluent, 
flattened, broad-based, spreading, deflexed, pale spines, 5—10 mm. long; the mouth 
obliquely truncate, unarmed, bordered by a narrow membranous brittle rim, 
prolonged into an axillary perishable ligula. eaves small, the pinniferous part 
usually 40—45 cm., up to 60 cm., long but at times only 25—30 em.; the petiole 
almost wanting, the lowest leaflets being inserted very near the mouth of the 
sheaths; rhachis trigonous, armed along the dorsum, at times powerfully, with’ 
solitary or ternate claws; the cirrus slender and elongate, armed with very 
approximate halfwhorls of very sharp claws. Leaflets usually not very numerous. 
10—12 on each side of the rhachis, rarely so many as 15—17, variously set, frèquent- 
ly in distant opposite groups of 2—3 on each side of the rhachis, or else, and this 
frequently, subequidistant ; some of the leaflets, specially the intermediate, are 
exactly opposite and divaricate, those of one side forming with those of the other 
side one horizontal line; the leaflets of the apex are ascendent 
deflexed ; they are papyraceous, green on both surfaces, lanceolate, oblanceolate or 
linear-lanceolate, at times very elongate and narrow, tapering below to an acute 
base, where they are furnished with a more or less distinct axillary callus; are 
acuminate and suddenly contracted above or are, at times, gradually lengthened 
out into a very narrowly linear or filiform tip, 15—20 mm. long, bristly penicillate 
at its apex; their mid-costa is slender, raised on the upper surface, smoothy or at 
times very sparingly setulose only above or also on both surfaces; secondary 
nerves 2 on each side of the mid-costa, very slender; transverse veinlets faint ; 
the lower margin is often marked on, the upper surface with a broad polished 
band; the margins are very remotely ciliate-spinulous ; the intermediate leaflets 
are the ‘largest; the proportion of their length to their breadth is very variable, 
some being 10—15 cm. long and 15—20 mm. broad, and others 25 cm. long and 
only 12—13 mm. broad, the lowest leaflets are' at times very narrow and have a 
more distinct basal callosity than the upper. Spadices erect, male and, female 
externally alike, borne on a short pedicellar part (1—2 cm. long), ‘flattened and 
acutely two-edged. Spathe narrowly lanceolate-elliptical or flattened-fusiform. 12—30 
em. long, 2—3 em. broad, gradually narrowing below to an acute base, and above to 
a long and narrow beak, dry, papyraceous, cinnamon-brown, finely and fugaciously 
rusty-furfuraceous, the edges very sharp. The normal opening of the spathe is 
along the margins of the beak, but frequently its walls are split longitudinally, 
these being very thin and brittle. Male panicle well furnished with flowers, 
completely filing the cavity of the spathe, much branched, its main axis strongly 
sinuous ; the floriferous branchlets are divisions 
and the lower 
of third degree, very short, and 
LI 
