0. serrulatus] BECCARI. MONOGRAPH OF THE GENUS CALAMUS. 235 
out the affinities of this species, : though very probably it will range near C 
australis. Certainly it cannot be referred to (C, Mueilerii, as was supposed by 
Bentham, nor to any other known Australian Calamus, except to the recently 
described €. Moti Bailey. A leaf of a Calamus gathered by Miss E. Bauer on the 
Bloomfield River Queensland, and also communicated to me by von Mueller 
probably belongs to C. radicalis. 
59. CALAMUS ZEBRINUS Becc. Malesia, iii, 59, and Rec. Bot. Surv. Ind. ii, 204 . 
Description.—High scandent. Sheathed stem about 2 cm. in diam. Leaf-sheaths 
flagelliferous, slightly gibbous above, ornamented with very many crowded horizontally 
or obliquely seriate sinuous subannular or interrupted narrowly lamelliform ridges, 
which are further finely toothed-spinulous on their crest. Leaf-sheath flagella very 
long, compressed in the basal portion, where serrulate or furnished with approximate 
very small spinules on the edges, and cylindraceous upwards where irregularly armed 
with half-whorled or scattered claws. Ocrea deciduous. Leaves rather large, 1.7 m 
long, not cirriferous; petiole rather elongate (18 cm. long), flat above where densely 
armed all over the surface as well as on the margins with short straight spines, 
rounded and smooth beneath; rachis broadly channelled on each side in its lower portion 
above (where are inserted the leaflets), and bifuced with acute and smooth angle in 
its upper part; beneath the rachis is regularly and closely armed at the sides and 
along the middle with short stout claws, which are solitary in the lower and in 
termediate portion and are ternate near the summit; leaflets very numerous, equidistant, 
patent, very closely and very regularly set, almost always opposite, very narrow 
linear, very long-acuminate, green and concolourous on both surfaces, pap 
subtricostulate, the mid-costa acute and the side costz slender but distinct above 
faint beneath, the 3 rather closely and minutely bristly on both surfaces; the largest 
leaflets 25-20 em. long, 1 em. broad, the uppermost gradually shorter, the two of 
the terminal pair small and narrow, free at the base; transverse veinlets not very 
conspicuous and much interrupted; margins very finely eiliolate.—Other parts unknown. 
Hanrrar.—N. E. New Guinea; at Ramoi, Beccari P. P. No. 416. 
OnsERvaTIONS,— This species does not appear allied to any other, but is perbaps 
to C. serrulatus ; though seen only in a sterile condition, it is very well marked by 
the peculiar ornamentation of the leaf-sheaths, and the numerous very narrow equidistan. 
leaflets with 3 bristly nerves on both surfaces. 
PLATE 74.—Calamus zebrinus Bece. Portion of the sheathed stem and leaf from 
Beccari P. P. No. 416. | 
60. CaraAMus sERRULATUS Becc. Malesia, iii, 59, and in Rec. Bot. Surv. 
ees Ind. ii, 204. 
DESCRIPTION.— Scandent, when with the sheaths on as thick as a man’s finger. Leaf- 
sheaths not or indistinctly gibbous above, slightly clavate or somewhat gradually 
enlarged towards their upper part, very obliquely truncate at the mouth, and gradually 
passing into the petiole, armed with not many solitary scattered horizontal or some- 
what deflexed, very acuminate, straight, 5-15 mm, long spines, which have a rather 
Axx. Roy. Bor. Garp. Carcutra Vor. XI. 
