400 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. (Cx Rumphit. 
towards the base, finely striately veined; the involucrophorum is not stalked, almost 
exsert from its own spathel and laterally attached to the base of the one above. 
From the foregoing it would appear that I have derived the description of this 
species from detached specimens of leaves, male and female spadix. I have however 
little or no doubt that these materials belong to the same species, Nevertheless 
I consider C. formosanus founded on Oldham’s leaf-specimen. ©. formosanus has no 
very salient characters in the vegetative organs, but its affinities are evidently with 
the species of the group of C. palustris. It appears related also to C.  Moseleyanus, 
but this has subequidistant, not grouped leaflets. 
PLATE 172,—Calamus formosanus Bece. Summit of a male spadix. 
Pirate 172A.—Calamus formosanus Becc. Lower part of a leaf, with portion of 
its sheath; an intermediate portion (upper surface) and the cirriferous summit of the 
same leaf,—Doth plates from Swinhoe’s specimen in Herb. Kew, 
145, Catamus RuwPan Bl. Rumphia iii. 38; Miq. De Palmis Arch. Ind. 
29; H. Wendl. in Kerch. Palm. p. 237. ` 
C. Rotang Linn. Sp. Plant. (2nd edit.) 463. 
Daemonorops Rumphit Mart. Hist. Nat. Palm. iii, 331; Mig. Fl. Ind. 
Bat. iii. 103; Walp. Ann. iii. 481 and v. 829; Becc. Malesia i. 88, 
Palmijuncus verus angustifolius seu Rottang Tuni Rumph. Herb. Amb. v. 
105, pl. 54. 
DzscgiPTI085,— High scandent, naked canes as thick as a man’s finger. Leaf- 
sheaths strongly gibbous above, armed with long slender scattered spines, Leaves 
large, about 2°5 m. long and terminating with an equally long strongly clawed 
flagellum; rachis strongly armed beneath with 3-4-nate claws; leaflets not very 
numerous, rather remotely equidistant, about 75 cm. long and 35-4 em. broad. 
narrowly lanceolate, very acuminate, with the mid-costa and one nerve on each 
side of it bristly beneath; margins conspicuously ciliate. Male spadiz . . . 
Female spadix simply decciiiputnd, broadly paniculate, large, about 50 cm. UM 
flagelliferous, shorter than the leaves, with 3 or 4 partial inflorescences on each side, 
each of these bearing 3-5 spikelets on each side; primary spathes tubular, spinous; 
spikelets short, about 3 em. long, with a few biseriste flowers (3-4 in each series?). 
Fruit globose-obiong, of moderate size, shortly and broadly mucronate. Seed convex 
on the back and with a deep chalazal fovea on the raphal side, (Descr. from 
Rumph). | 
Hasirat.~—Amboina at the foot of the mountains at Hitu and Laha and near the 
Dammara forest behind the village of Way and along the river Way-Ory in Leytimor. 
Malay names ‘‘Rotang Tuni”; Amboineese name ‘' Ua-Helite.” The Rotang was 
much used in Amboina at the time of Rumph. 
OBSERVATIONS.—I consider this to be a true Rotang allied to ©. palustris on 
account of its large panicled spadices, which are said to be 41 feet long, with the 
fruit the size of a musket bulle*, not quite globose, but slightly oblong and narrowed 
