C. siphonospathus. } BEOCARI. THE SPECIES OF CALAMUS.—SUPPLEMENT. 115 
branches, are 3-3:5 cm, long, and have 10-11 very approximate or contiguous 
flowers on each side; the uppermost spikelets are shorter and have 5-6 flowers only 
on each side; spathels very approximate, concave, bracteiform, horizontal or 
deflexed ; involucre cupular, immersed within its own spathel. Male flowers 5 mm. 
long, 2 mm. broad; the calyx shortly tubular with 3 deltoid acute teeth; the 
corolla twice as long as the calyx, very obsoletely trigonous, subapiculate, the 
segments smooth outside. 
SuppL. Prate 64.—Calamus Vidalianus Bece. Portion of the sheathed stem 
with an entire male spadix; terminal part of a leaf. From No. 13214 Herb. 
Manila in Herb. Beccari. 
183. CALAMUS DIDYMOCaRPUS Warb. 
Collected again by Koorders in Celebes, in the Province of Minahassa (No. 18392 8 
in the Buitenzorg Herbarium). The specimen is accompanied by a portion of its 
leaf-sheath, a part which was wanting in the type specimen, and which allows me 
to complete the description already given of that species. Accordingly C. didymocarpus 
proves to be a robust plant with a sheathed stem about as thick as the wrist. 
The leaf-sheath is thick, woody, strongly armed with isolated but approximate spines, 
horizontal, or slightly reversed, of the same uniform light colour as the entire 
surface of the sheath; the spines are laminar, very rigid, the largest being 2-5 em. 
long, 8 mm. broad at the base, and more or less undulate; mixed with these, 
large spines are others, smaller, but of the same type. 
185, CALAMUS SIPHONOSPATHUS Mart. 
I have received numerous specimens of this Calamus, which is widely diffused in 
the Philippines, especially in Luzon, and I find that scarcely two specimens are 
perfectly alike, unless they come from the same locality. They vary much in 
general size, in spinescence, in the breadth and hairiness of the leaflets, in the 
spinescence and indumentum of the spathes, and in the numbers of the series of 
the fruit-scales. Some specimens also are scarcely distinguishable from the allieg 
species C, microcarpus and (C. dimorphacanthus, and perhaps all three may be considered 
as one of those species that I call “ synspecies” the members of which represent 
second degree species. 
CALAMUS SIPHONOSPATHUS var. BATANENSIs. Becc. in Philipp. Journ Se. iii 
Botany (1908), 342. 
Description.—Sheathed stem 4—5 cm. in diameter. ^ Leaf-sheaths armed with scattered 
or subseriate, spreading, light-coloured, feeble, very slender spiculae, 15-20 mm. long or 
less. Leaves 1°6 m. long in the pinniferous part (in one specimen); petiole short 
and rather robust, flattish and sprinkled with small prickles above, convex and 
smooth underneath. Leaflets numerous, equidistant, very closely set, with 3 or 
occasionally 5 bristly nerves above, underneath usually smooth or with the mid-costa 
alone sparingly bristly. Female spadiz rigid, about 65 cm. long (in one specimen); 
spathes smooth, loosely sheathing, slightly inflated ; partial inflorescences small, the 
lowest and Jargest 7-8 cm. long with only 3-5 spikelets on each side, of which 
Ann. Roy, Bor. Garp., Carcurta Vor, XI. 
