218 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [C. rivalis 
lanceolate, acute, their cells deeply discrete at the base; rudimentary ovary 
formed by three subulate rigid bodies which are united by their bases, insert- 
ed in the fieshy infundibuliform disc formed by the base of the stamens 
and rise above the base of the anthers when in the bud. Female spadiz 
simply decompound, with 2-3 erect partial infloréseences, of which the lowest, 
the largest, is 8-10 cm. long, with 3-4 alternately distichous spikelets on each 
side; secondary spathes ss in the male spadix; spikelets 2-2°5 cm. long, inserted 
‘at the mouth of their own spathes and more or less distinctly callous at their axilla 
charged with 6-8 flowers on each side; spathels very shortly and broadly 
infundibuliform, striately veined, with a broadly triangular apiculate withered 
point; involucrophorum unilaterally cupular, attached to the base of the spathel above 
its own; involucre concave, unilaterally evolute, sub-auriculiform, obtuse ; areola of the 
neuter flower roundish, sub-callous, sharply defined by an acute and often denticulate 
border. Neuter flowers very similar to the male ones, but slightly smaller: 
Female flowers small 3 mm. long, ovate; the calyx rounded at the base, striately 
veined externally, divided down almost to the middle into three broad acute lobes; 
the corolla divided down almost to its lower third part into three ovate- 
lanceolate acute segments, which are one-third longer than the calyx; urceolum 
formed by the base of the stamens, membranous, crowned by six broad, triangular, 
short; acute teeth; anthers auricled, sagittate at the base and obtuse at the 
apex ; ovary oblong, slightly attenuate at the base, style thick and large relatively 
to the ovary; stigmata small, trigonous, acute. Fruiting perianth explanate.—The 
mature fruit not seen, 
Hasrrat.—Philippine Islands; Luzon in the province of Albany, Cuming 
No. 1225 in Herb. Kew. Deless, Flor. Boiss, and  Vindob.; Mariveles,  Loher 
No. 1376 in Herb. Kew. : 
OBsERVATIONS.—This is a much more slender plant than ©. mollis, but is how- 
ever very closely related to, and possibly only a variety. of that species; it has 
fewer, narrower and more  inequidistant. leaflets and the spathels in the female 
spikelets are distinctly infundibuliform and not very approximate and bracteiform, 
It is not certain that Cuming’s No. 1225 really corresponds to the (C. gracilis 
of Blanco, a name which has been changed by Kunth into that of Blancoi, the 
first having been previously employed by Roxburgh for an Indian Species. 
Nevertheless in the absence of. those of Blanco, we may take as type-specimens 
those distributed by Cuming under the above-mentioned number 1225. 
Cuming’s specimens have rather densely spinulous sheaths. The specimen of 
Loher in the Kew Herbarium, with a female spadix in flower, differs from those 
of Cuming only in the wholly unarmed leaf-sheaths; it is also more robust in every 
part. | 
Prats 64.—Calamus Blaneoi Kunth. Cuming’s entire specimen in Herb. Delessert. 
50. CarLAMUS Rivatis Thw. C. P. No. 3914; Trimen in Journ, Bot. xxiii 
3 
(1885), 268 (err. typ. nivalis); Hook. f, Fl. Brit. Ind. vi, 441; Becc. in 
Rec. Bot. Surv. Ind, ii, 199, | EOM s 
