@. Bousigonii.) BECCARI. MONOGRAPH OF THE GENUS CALAMUS. 343 
C. spectabilis is doubtless related to C, rhomboideus, but it is easily distinguished 
by its smaller dimensions, ultradecompound male spadix with much. smaller flowers, 
and the smaller leaflets with only 5-7 costae of which 3-4 are bristly above. 
CALAMUS SPECTABILIS var, SUMATRANUS Becc. 
Descriprion.-Scandent, fugaciously furfuraceous in the younger parts, then 
glabrous. Sheathed stem 10-12 mm. in diam. Leaf-sheaths slightly gibbous above, 
flagelliferous, glabrous, yellowish-brown when dry, densely armed with very 
unequal, small, rather broad, laminar, light, horizontal or slightly deflexed ‘spines, 
of which the largest 7-8 mm. long, and these intermingled with much smaller and 
sometimes tuberculiform ones.  Ocrea exsuccous, brittle, smooth or slightly spinulous. 
Leaf-sheath flagella filiform, very slender, armed even in the lower portion with very 
minute scattered (not  whorled) claws. Leaves not cirriferous, 60-70 cm. long, 
with 4-5 inequidistant not fascicled remote leaflets on each side; petiole very 
short or almost obsolete; rachis rather acutely ^ bifaced above and finely 
irregularly clawed in its upper portion, obsoletely angular near the base where armed 
almost all round with short conic straight or slightly hooked prickles; leaflets oblong- 
obovate or ovate-subrhomboid, glabrous and  subconcolorous on both surfaces, 
papyraceous, rather thin in texture, acute and not ansate at the base, suddenly 
narrowed at the summit into a bristly tip, with 5-7 rather slender costae radiating 
from the base, of which only the central reaching the summit and the side ones 
curved and evanescent near the margins at different levels, 3-4 of them very 
finely inconspicuously remotely spinulous, the largest 18-20 em. long, 6 cm. broad, 
the two of the terminal pair somewhat shorter and slightly narrower, those near 
the base very spreading, sometimes narrower but not very different from the others, 
HaBrrAT.—W. Sumatra at Sungei Bulu in the Prov. of Padang in the low land 
not very far from the sea coast, Beccari P. S. 894, collected in Sept. 1878; also 
on Gunong Trang in the Lampong, Forbes Nos. 1574 and 1490 in Herb. Calc. 
OssERvATIONS,— The No. 1574 of Forbes is accompanied by the detached portion 
of a fruit-spadix which has a very long partial inflorescence with many remote 
deflexed spikelets and small obovate distinctly beaked fruits. As this specimen though 
bearing the same number as the leaves appears of a different gathering, I have not 
included it in my description. My Sumatran specimens and especially Forbes’s ones 
bear a considerable resemblance to certain forms of ©. ‘javensis, but in this species all 
the primary nerves reach the summit of the leaflets. 
Prate 138.—Calamus spectabilis var. sumatranus Becc, Summit of the stem 
with a flagelliferous leaf-sheath ard with an entire leaf; the base of a spadix; the 
summit of the spadix with an entire partial inflorescence (that mentioned above) 
and bearing immature fruit,.—From Forbess No. 1574 in the Berlin Herb. 
116. Carawus Bousrcoxu Pierre MS. (name only) Becc. in Rec. Bot. Surv. 
Ind. ii, 209, 
Drscription.—Slender, scandent.  SAeathed stem 10-12 mm. in diam.; naked canes 
yellowish, almost opaque, longitudinally striate, 0-8 mm. in diam. Leaf-sheaths elon- 
gate, slightly gibbous above, green marbled with furfuraceous patcnes, densely armed 
