4 6 4 ANNALS OF THE ROYAL BOTAMC GAUDEN. CALCUTTA. [C. VIDAHONUS
scarioils, erosely toothed. Seed orbicular, slightly flattened on the rapbal side with
a central round an J rather deep chalazal foTca, deeply pitted and convex on the
back, 7 mm. broad, 5'0 mm. thick; albimien equable; embryo basal.
PLA'JE 210 —Calamus Hollrungii Beoc. Portion of a leaf from near its base
upper sm-face; iotermediato portion of a leaf, under surface; portion of the spadix
with an entire partial inflorescence bearing immature fruit; dctached mature fruit and
seed.—From HoUrung's No. 667 in Herb. Bccc.
181. CALAMUS VIDALIANUS Bccc. in Rec. Bot. Surv. lud. ii, 212, et in Webbia,.
350.
C. hornns? Vidal Rev.
exsicc. No. 938 !
Plant. Vase. FiHp., 280 (not of Bl.) and
DJESCEIPTION.—Probably scandent and of moderate size. Stem Leaf-sheaths
• . . . , Leaves not seen entire, but probably cirrifevous; petiole (apparently
very short); rachis in its basal portion slightly convex above, where very densely
covered with uuequal spiuea, some of them very short and tuberculiform, whereas others
are 10-12 mm. long, scattered, solitary or aggregate, straight and ercct on the surface
or slightly deflesed, subulate, brownish with a light base, rather closely armed at
the sides with slightly hooked prickles, slightly convex and quite smooth underneath ;
leaflets in the small basal poi-tion seen by me inserted alone a narrow longitudinal
furrow at the side of the rachis, subequidistant, 3-5 cm. apart, alternate or subopposite,
papyraceous, rigidulous, glabrous, rather opaque, subconcolorous on both
surfaces, narrowly ensifoi-m, gradually tapering towards a very narrow base, acuminate
from the middle into a setose apex, :30-32 cm. long, 15-20 mm. broad, with 3
bristly-spinulous very distinct costae above ; underneath, the nerves tenuous and
naked; transverse veinlets very slender, rather crowded; margins ciliate with
spreading rather strong spinules, the lower one in the upper surface bordered by a
shining stripe. Male spadix Female spadix decompound, apparently largo and
diffuse (not seen entire), terminating in a small slender tail-like, sheathed, aculeolate
appendix (this 9 cm. long), with many approximate partial inflorescences; primary
spathes (the lowermost not seen by me) tubular-cylindraceous, closely sheathing, slightly
enlarged above, thinly coriaceous, greenish (when dry"), almost polished, sprinkled
with small brown scales (visible under a lens), entire and truncate at the mouth,
where prolonged at one side into a triangular dorsally keeled and sparsely aculeolate
point, otherwise unarmed; partial inflorescences inserted at the mouth of their own
spathe with a distinct axillary callus, the largest amongst the few of the upper part
of the spadiccs seen by me, 20 cm. long, with 4-5 distichous spikelets on each
side; secondary spathes sprinkled with brown scales, unarmed, olongate-infundibuliforro,
narrowed towards the base, where flat or slightly concave on the inner side,
rounded on the back, obliquely truncate at the mouth, scarious and ciliate-paleaeeous
at the mouth, slightly prolonged at one side into an acute point; spikelets inserted
just at the mouth of their own spathe with a distinct axillary callus, arched,
spreading, 5-7 cm. long with about 6 flowers on each side ; the upper ones
somewhat shorter; spathels infundibuliform, narrowed a good deal towards the base,
C. pachystaohys] ÍJECCAEL MONOGEAPH OF THB SENOS CALAMUS. 465.
sparsely scaly-furfuraceous, superfi-cially striately veined ; scarious-ciliolate and
©rose at the margin, prolonged at one side into a triangular acute point;
involucrophonam almost entirely exsert from its own spathel and laterally attached
at the base of the one above with a distinct axillary callus next to the axis,
shallow, concave, posticously acutely bidentate; involucre shallowly cupular, slightly
exceeding the involucrophorum, emarginate and acutely bidentate on the side of
the neuter flower; areola of the neuter flower distinctly lunate, sharply bordered
and sometimes somewhat concave and subinvolucriform. Female Jloivcra rather
remote, about 5 mm. long, conic-ovoid, narrowing towards the summit; the calyx
very shortly and acutely 3-toothed with a slightly ventricose tube, smooth, thickened
and subcoriaceous at the baso; the corolla as long as the calyx, divided a little
beyond midway into 3 lanceolate acute segments, smooth or indistinctly striately
veined outside; staminal urceolum reaching to about the middle of the corolla, and
crowned by 6 triangular short teeth; sterile anthers deeply sagittate; ovary shortly
pedicellate; style short, thicb, conic; stigmata small recurved. Fruit unknown.
HABII'AT.—Luzon in the Philippines, at Unisan in the Prov. of Tayabas, VHal
No. 933 in Herb. Kew.
OBSERVATIONS.—Of this I have seen only the summit of a female spadix in flower
and a portion of a leaf with 20 cm. of rachis, probably from near the base.
I t appears related to C. 'pachystachys and 0. didymwarpus; distinguishable by its
rachis densely prickly in its upper part and the narrow, ensiform, equidistant
leaflets with 3 bristly costae above and naked beneath; apparently from the conspicuous
development of the areola of the neuter flowers, sometimes two almost equal flowers
occur at one spathel.
PLATE 211.—Calamus Vidalianus Bece.—Portion of a leaf from near its base, seen
from the upper surface; portions of the female spadix in flower.—From Vidal's
No. 933 in Herb. Kew.
182. CALAMUS PACHYSTACHYS Warb. (name only in Herb. Borol.).
DESCRIPTION.—Robust, scandent. Stem Leaf-shmths Leaves rather
large (not seen entire by me), terminating in a robust but apparently not very long
cirrus ; this dreadfully armed with half-whorled or even solitary, stout, light-based and
black-tipped claws ; petiole ; rachis in its first portion biconvex, armed above
with rather robust, 5-6 mm. long, straight, erect spines and beneath along the middle
with solitary, long-tipped claws (which leave a deep impression of their outline on
t h e surface of the rachis) and with a few other spines at the sides ; in the upper
portion the rachis is bifaced and naked above, and beneath is usually armed
along tlie middle with long and robust claws, which are solitary at flrst and then
when nearer to the terminal cirrus more or less confluent, binate or ternate with
solitary ones irregularly interposed amongst them ; leaflets rather numerous, inserted
at a rather acute angle, equidistant, not very closely set (about 4 cm. apart),
papyraceous, very rigid, glabrous, concolorous and shining on both surfaces, longitudinally
plicate, narrowly lanceolate, somewhat alternate towards the base where plicate
with a more or less distinct callus beneath inaide the folding at their insertion ;
ANN. ROY. BOT. GARD. OALCUTT.^. VOL. X I ,