178  ANNALS OF THE ROYAL BOTANIC GARDEN, .CALCUTTA. (G. jauensis 
roinded base and vertex topped by a cylindrical beak, this 1:5-2 mm. long; scales 
in 20-21 series. Seed about 1 em. long and 7 mm. thick. 
HaBITAT.—Javá and Sumatra. It seems common on the mountains between 
“950-1500 m. in Western Java, where it receives the name of ‘Huy (Hooe) Omash ' 
or ‘Ommas,’ (Blume); at Tapos in the forests of Mt. Patuha (Junghuhn), where it is 
known by the name of 'Rotang Tjatjing or Chaching’; in Bantam at Pasir Orai 
(Forbes No. 258 in Calc. Herb.). In Sumatra (Forbes No. 2507 in Calc. Herb.).—It 
produces one of the more slender and more esteemed  Rotangs, much employed 
for tying, basket-making, matting, etc. 
OxsseRvations.—This is a very variable species, perhaps the most polymorphic of 
the entire genus, and with a relatively wide geographical distribution, growing in the 
Malayan Peninsula and Borneo as well as Java and Sumatra, The type must be 
considered the Javan plant described and figured by Blume; the variety & of this 
‘author seems to me one of the usual forms of the type. A form with narrower 
leaflets than usual is that figured in Plate 113 of Martius’ Hist. Nat. Palmarum; 
and indeed C. javensis even in Java varies very much in the size and relative 
breadth of the leaflets. I have not thought it necessary to give a detailed 
descriptive of the type of C. javensis as I have more fully described the var» 
peninsularis of which I had more complete specimens at my disposal and with 
which it agrees in most of its characters. : 
CALAMUS JAVENSIS subvar. EXILIS Bece. 
DESCRIPTION.—Sheathed stem very slender, 4-5 mm, in diam, `Petiòle ‘elongate 
(17 cm.). . Leaflets very narrow (1'5-2 cm. broad). 
Hasrrat,—Java, Reinwardt in Martius’ ‘Herbarium at Munich. 
OBSERVATIONS.—I do not know if this is a constant or a transitory form. The 
only specimen I have seen probably belongs to a rather young plant growing on 
high mopntains. This variety may. be considered. as the Javan representative of 
var. fenuissimus of the form peninsularis, 
CALAMUS JAVENSIS var. PENINsULARIS Becc. in Hook. f. Fl. Brit. Ind. vi, 442, 
and in Rec. Bot. Surv. Ind. ii, 201. 
C. penicillatus Roxb. Fil. Ind. iii, 781. 
DescripTion.—Scandent, very slender, 3-10 m. high.  Sheathed stem 5-10 
mm. in diam. Leaf-sheaths sometimes flagelliferous, slightly gibbous above, always 
more or less distinctly striate longitudinally, armed with solitary scattered rather 
numerous or scanty spines, which are short or 7-8 mm. long, usually straight with 
a broad base, flat beneath, horizontal or sometimes with a tendency to become 
hooked, often scurfy at the margins. . Ocrea membranous, 10-15 mm. long, unarmed, 
and with long fibrous cilia at the margin when young, brittle and falling to pieces 
later, Leaf-sheath flagella inserted near the mouth of the sheath in opposition to the 
petiole, callous at the base, filiform, rather long, with the lowest spathe slightly 
flattened and usually smooth, but sometimes sparsely aculeate on the back. . 
‘hort, 30-50 em. long, not cirriferous ; petiole very ‘short or nearly wanting; rachis 
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