444 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. (C. albus. 
Hasrtat,—Tonkin; in the.forest of Mount Bavi, at about 700 metr. elevation, 
Balansa, No. 4360: Nov. 1887, in Herb. Berol. and Kew. 
OssERVATIONS,—The fruit is a good deal like that of OC. Doriaei, but it is less 
elongate or more typically ovoid. It approaches also C. £hasianus, but this has 
much larger fruit, According to a note of the collector, the fruit has a whitish 
very acid pulp. 
C. platyacanthus Mart. is a Demonorops, and therefore it has been possible to 
keep the suggestive specific name given by Warburg to this very distinct species, 
Prats 198.—Calamus platyacanthus Warb.—Portion of leaf-sheath with base of 
a leaf; an entire partial inflorescence of a fruit-spadix; seed from dorsal and 
raphal side, and longitudinally cut through the embryo.—From Balansa’s type speci- 
men in Herb. Berol. 
169. CaLAMUS ALBUS Pers. Enchir. i, 383 (excl. syn. Lour.); Mart. Hist. Nat. 
Palm. ii, 342; Walp. Ann. iii, 491 and v, 832; Blume, Rumphia, 
iii, 31 in note; Miq. Fl. Ind. Bat. iii, 137 and De Palmis, 29; Becc, 
Malesia, i, 88; H. Wendl. in Kerch. Les Palm. 235. 
C. rudenium (not of Lour.) Roxb. Fl. Ind. iil, 776; Becc. in Rec. Bot. 
Surv. Ind. ij, 213. 
Palmüuncus albus Rumph. Herb. Amb. v, 102, t. lii; Hassk. Neuer 
Schlüssel zu Rumph’s. Herb. Amb. 100 (excl. many syn.). | 
DrscnuiPTION.— High scandent and rather robust. Sheathed slem 2-5 cm. in diam. 
-Leaf-sheaths thick, almost woody, strongly gibbous above, light yellowish-green (like 
the other parts of the plant) when dry, armed (often very densely) with uniform, 
Scattered, small, very narrow, straight acicular rather short (1 cm. long at most), 
black-tipped, horizontal spines, which rest on a small bulbous light base.  Ocrea very 
short, liguliform. Leaves large, 2-3m. in the pinniferous part; the cirrus very 
long and robust, armed at almost regular intervals with half-whorls of very stout 
black tipped claws; petiole very robust and rather short, up to 2-3 cem. broad, 
roundish, smooth or more or less prickly beneath, flat above and, like the first 
portion of the rachis, more or less, sometimes densely, armed with narrow, 
short, straight, erect spines ; margins also usually armed with short prickles; rachis 
armed beneath along the middle with at first solitary and upwards geminate and 
ternate claws, more or less distinctly bifaced above in its upper part; leaflets 
numerous, large, equidistant, rather remote (6-10 cm. apart); the lower ones usually 
opposite, the upper ones alternate, papyraceous, rather firm, green and subconcolorous 
on both surfaces, the largest slightly concavo-convex, narrowly or broadly lanceolate, 
almost equally tapering towards both ends, acute at the base, acuminate at summit 
into a bristly-spinulous tip, 5-costulate; the costae rather slender, the 3 central 
remotely bristly-spinulous above, the side ones usually, but not always, smooth, 
all about of the same strength, underneath all naked and very slightly prominent; 
_ transverse veinlets not very conspicuous; margins rather closely spinulous; the largest 
leaflets, those a little above the base, 45-65 cm. long, 5-7 cm. broad, the 
