124 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. TC. discolor. 
otherwise similar, closely sheathing, slightly enlarged above, more or less prickly on 
the back, densely ciliate-bearded at the mouths; the lower, and larger, partial 
inflorescences 10-12 cm. long, bearing 8-10 small arched subscorpioid spikelets on 
each side; secondary spathes tubular-infundibuliform,  rusty-furfuraceous, densely 
ciliate at the mouths; male spikelets very small: the lower and largest 10-12 mm: 
long and with 7-9 very approximate flowers on each side; spathels bracteiform, 
triangular, deflexed, subtending the base of the flowers; involucre slightly concave, 
strongly striately veined, deeply bilobed and as if formed by two ovate bracts 
united by their bases. Male flowers....... 
HasrrarT.— Dutch N. W. Borneo. First collected (sterile) by Teijsmann, probably 
in the Residency of Pontianak, No. 16334 in Buitenzorg Herbarium; native name 
* Rotang lilung.” Found again with male spadices from which all the flowers had 
fallen, by Haller at Liang-gagang, No. 2596 in Buitenzorg Herbarium, 
OssrRvATIONS.—lt seems related to OC. mattanensis from which it differs in the 
leaves being almost without a petiole, and with the leaflets of the lower part of 
the rachis curiously deflexed, as occurs also in ©. ferrugineus, which C. retrophyllus 
resembles; but perhaps its nearest ally is ©. mucronatus, from which it however 
. differs by its characteristically deflexed lower leaves, 
SuPPL. PrarE 70.—Calamus retrophyllus Bece. Portion of the specimen of an 
entire male spadix and  ieaves. From  Hallie's No. 2596 in Buitenzorg 
Herbarium, 
193.  CaraMus DiSscoLoR Mart, Add:—Becc. in Elmer’s Leaflets Philip. Bot. 
i (1909) 449. 
! C. Lindenit Rodigas, Ridley in Journ. Str, Branch Roy, As, Soe. 
No. 44, (1905) 200. 
DescriPrion,—Scandent, rather slender. Naked s/em about 13 mm. in diameter, 
Leaf-sheaths densely set with thin, very slender, brown spines. Leaf-sheath flagella 
very long and slender (one is 9:5 m. long) very powerfully armed at the almost 
regular distance of 15-20 mm. with half- or three-quarter whorls of very acuminate 
and sharp claws which have blackish points, and light-coloured, glabrous bases, while 
the axial part of the flagellum is finely rusty-furfuraceous and its upper capillary 
end is very minutely clawed; the lower spathes of the flagella are armed with 
claws, and in their upper part are slashed or disintegrated into fine fibres, Leaves 
(non-cirriferous) apparently about 1-L:2 m. long in the pinniferous part; petiole 
rather elongate; rachis covered with a conspicuous, adherent, rusty—furfuraceous 
indumentum: it is convex below where armed powerfully and closely with 
ternate claws which become solitary towards the end; on the upper surface the 
rachis is bifaced with a very acute salient angle. Leaflets numerous, very regu- 
larly and closely set at a very wide angle (15-20 mm. apart but at times only 
10 mm. on each side of the rachis): they are papyraceous, rather firm, green and 
dull above, covered underneath with a thin, chaly-white coating, very narrowly 
lanceolate, long-acuminat» above to a fine bristly tip, narrowing very briefly 
in their lower part and with the margins very suddenly drawn together at the 
base: they are subtricostulate, or have the mid-costa prominent and sharp, 
