C. siphonospathus | BECCARI. MONOGRAPH OF THE GENUS CALAMUS. 478. 
spathe, branched at the base and with simple approximate spikelets upwards; secondary 
and ternary spathes very small, closely sheathing, tubular-cylindraceous, truncate, slightly 
apiculate at one side, finely striately veined; spikelets small, 2-3 cm. long with 6-10 
flatly bifarious flowers on each side, spreading, attached above the mouth of their 
own spathe with a distinct axillary callus, their axis slender, slightly sinuous; spathels. 
tubular and cylindraceoas at the base, suddenly expanded in their upper part, finely 
striately veined, horizontally truncate, extended at one side into a broadly triangular 
acute point; involucrophorum laterally attached outside its own spathel at the base 
of the one above, sessile, explanate, scale-like, inconspicuous; involucre also scale- 
like, irregular, with a flat broad cireular area for the insertion of the flower; areola 
of the neuter flower depressed, inconspicuous. Female flowers small, 2:5 mm. long, 
short and broad, ovoid or subclavate, almost horizontaliy inserted; calyx cam- 
panulate, the base flat, striately veined, divided midway down into 3 triangular acute 
teeth; the segments of the corolla narrower but as long as the teeth of the calyx. 
Fruiting perianth distinctly pedicelliform. Fruit very small, broadly ovoid or sub- 
obovoid, very shortly apiculate, 8 mm. lorg (including the perianth), 5 mm. 
broad; scales in 12-18 longitudinal series, straw or light-grey coloured with a 
paler rather coarsely toothed margin, shining, not channelled along the middle. 
Seed very small, globular, 3 mm. in diam., coarsely and deeply pitted in the 
centre of the raphal side; albumen equable (not taking into account the superficial 
intrusion of the integument); embryo basal. 
Hasirat.—The Philippines, where apparently a common plant in Luzon. 
OxsERVATIONS,—The description above is a comprehensive one, C. siphonospaihus 
being a very variable plant ; it is, however, easily distinguishable by its spadices 
sheathed by gradually diminishing subimbricate loosely tubular subinflated spathes and 
by their dense and short supradecompound female inflorescences and by the very small 
fruit. It approaches very closely only €. dimorphocanthus and C. macrocarpus. Martius 
assigned the name of €. siphonospathus to a specimen of a male spadix only, col. 
lected by Perrottet at Manilla in 1819 and preserved in Delessert’s Herbarium at 
Geneva. This spadix alone, however, would be insufficient for recognizing and fixing 
the type of the species, but as it has been collected in the neighbourhood of 
Manilla and it hus prickly spathes, we may consider as typical of those specimens 
that have this peculiarity and come from the provinces nearer the capital. Inside 
the spathes of Perrottet’s male spadix I have found the remains of a few anis and 
therefore the inflated spathes are probably to a certain extent and occasionally biologi- 
cally connected with these insects. 
CALAMUS srPHoNOsPATHUSs Mart. (Forma typica). 
Descriprion.—Leaf-sheaths more or less densely spinous. Leaves with the petiole 
and first portion of the rachis prickly on both surfaces; leaflets narrow with 3 bristly 
costulae above; primary spathes prickly; partial inflorescences dense and much 
branched; fruit scales in 15 longitudinal series. | 
Hasrrat.—Manila (Perrotiet in Herb. Deless.); Bosoboso, prov. of Rizal (Merrill 
No. 1891 in Herb. Manill.); Central Luzon (Loher No, 1364 in Herb. Kew), 
Axx. Roy. Bor. Garp, CALCUTTA Vor. XI. 
