^ 
C. retrophyllus.) BECCARL THE SPECIES OF CALAMUS.—SUPPLEMENT. 123 
completely enveloped by the: calyx, its segments are lanceolate acuminate and as 
long as the calyx; the stamens have sagittate, lanceolate, acuminate anthers. 
The structure of these flowers is very peculiar owing to the corolla being entirely 
enclosed within the calyx, but all those seen by me were not yet open. 
SurPL. Prare 69.—Calamus Balansaeanus Becc. Summit of a leaf, and an ~ 
entire male spadix. The entire Cavalerie’s specimen. 
193. CALAMUS FERRUGINEUS Becc. 
The type specimen of this species must be considered that of Lobb, represented 
in plate 225 excluding of the spadix bearing young fruits (on the right-hand 
side of the same plate) which apparently belongs to 0. mattanensis Becc. The 
spadix of ©. ferrugineus is very similar to that of C. mattanensis, but it has the 
lowest spathe more elongate, less distinctly two-edged, with the edges smooth, and 
only its dorsal keel on its upper part is prickly. 
1984. CALAMUS RET:OPHYLLUS Becc. n. sp. 
Description.—Scandent, very slender. Sheathed stem 8-10 mm. in diameter. Leaf- 
sheaths gibbous, plicate above, very obliquely truncate, entire and bare at the mouths, 
sprinkled with very minute punctiform hair-like rusty scales, aud armed with 
unequal, straight, spreading, broad-based, light-coloured, short (2-10 mm. long) spines. 
Ocrea liguliform, ciliate, deciduous. Leaves about 40 cm. long in the pinniferous part, 
terminating in a long, minutely clawed cirrus, and without a petiole, the lowest leaflets 
being attached just at the mouths of the sheaths; rachis in its lower portion 
thickish, obsoletely angular, higher up acutely 3-gonous, armed on the lower surface 
along the centre at first with relatively robust and solitary, but higher up with 
3-nate claws; the salient angle on the upper surface very sharp and smooth ; leaflets 
22-28 in all, very inequidistant but not grouped, 1°5 em. apart in the lower part of 
the rachis, more distant towards the end; 5—6 leaflets on each side, amongst those 
nearer to the base are strongly deflexed, frequently opposite, and furnished above 
with a conspicuous axillary callus, which retains those leaflets in the said 
unusual position; all are  unicostate, firmly papyraceous, dull, concolorous and quite 
devoid of bristles or spinules on both surfaces, but on the lower are covered with 
innumerable, very minute, light-coloured papillae (visible only undera strong lens of 
which a few are to be found also in the upper surface; the mid-costa is acute and 
prominent above, and is accompanied beneath, on each side, by 2-3 rather distinct 
secondary nerves; transverse veinlets conspicuous, translucent; margins acute and 
quite smooth; the form and size of the leaflets is somewhat variable; the mesial 
leaflets are linear, 20-26 cm. long and only 5-6 mm, broad in some specimens, 
and at times narrowly lanceolate, 15-18 cm. long and 10-15 mm, broad, always 
gradually and long acuminate; the upper leaflets are narrower and shorter: those 
near the base, which are deflexed, are shorter but broader than the others’ (10-12 
em, long, 11-12 mm. broad) and frequently are less gradually or also rather 
suddenly acuminate. Male spadiz more or less furfuraceous throughout with 
rusty, not very adherent, scales; about 50 cm. long, nodding, ending in a small 
tail-like appendage and divided into 6-7 alternate, gradually decreasing, simple, 
slender partial inflorescences ; lowest primary spathes slightly larger than the upper, 
Anne Roy. Bot. Garp. CarcurrA Vor. XI. 
