•ISO ANSiLS OP TUB E O r i L llOIiSIC GARDEH, OiLCUTIi. [g. OxIegmUS.
rachis in its uppor p ) r t i o n acutely bifaoed above and armed beneatli at firil witli .oKt
a r y and upwards, ns in the torminal not very robust cirras, with rather strong
t e r n a t e claws; leaflets not very nametoas, 8-9 on each side, Tory i n e q i i d i s t a n t , never
v e r y close together, bat more or less distinctly and i r r e g a k r l y approximate into a tew
groups, firmly pipyracooas, concoloroas, yeliomsb-green (when dry), shining or subsliinmg
above, quite m t h o a t bristles or spiaales on both surfaces, Hnear or elongate-onsii
o n n , somewhat narrowed to and acute at the base, gradually a t t e n a a t e d towards the
summit into an acumhiate or sonietiniss rather suddenly obtuse, sparingly and shortly
b r i s t l y tip, longitudinally plicate, with tin mid-costa acute and raised above, and the
side nerves very slender; beneath all nerves slender; transverse veinlets slender
i n c o n s p i c u o u s ; margins finely very adpressedly spinaloui, the largest leaflets, the lower
ones, cm. long, 2-3 cm. broid; those near the summit somewhat shorter
and narrower.—Other parts unknown.
IlABlTAT.-Borneo, on Mount Mattang near Sarawak, Beccuri P. B. Nos. 190i>
and 1930.
OusERV.moJS.-This appears closely alhed to C. pdlijulm and, as in that species,
all parts of the plant, but especially, the leaflets, a.same in herbarium specimens
a peculiar yellowish greon tint.
I t differs from C. palliduhs ia irs leaves with a long
p i n n i f e r o u s part and more numerous leaflets.
peliole, a more elongate
I have collected of tliia two apeciinenB, each with an entire leaf and a portic
of the sheathed stem ; i n both specimens the shoath haa no trace of a flagellum.
PLATE 202.—Calamus mattanensis Becc. Portion of the sheathed stem with n
e n t i r e leaf (Becc. F. B. No. 1930).
CALAMUS OXLEYASUS 'i eysm. & Binneud. in Gat. Plant. Ilort. Bot. iSogor.
(18G6), 73 (name ouly;; Miq, De Palmis Archip. Ind. Obs. Nov.
17, with plate; H. VVendi. in Kerch. Les Palm, 267-, Becc. in Hook,
f. Fl. Brit. lud. vi, 408, and in Rec. Bot. Surv, Ind. ii, 214.
Dacmonorofi. faioiculatus Mart. Hist. Nat. Palm, iii, 330 (ISSU?); Walp,
Ann. iii, 480 and v, 829; Miq. Fl. Ind. Bat. iii, 101.
Calamv,« FernandezU H. Wendl. in Kerch. Les Palm. 236 (1878). liotang
Pajare GrifE. in Calc. Journ. v (1845), and Palm. Brit. India
98 (1850).
G. diffums Becc. in Hook. f. Fi. Brit. ind. ^
spadix) and in Rec. Bot. Surv. Ind. ii, 206.
+47 (as to the male
DESCIUPTIOXV.—Erect [later scandcnt?). Sheathed item about 5 cm. in diam. Leaf.
iheaUis not flagelliferous, not gibbous above, gradually passing into the petiole and
open a good way do.Tn 011 the ventral side, very densely and irregularly armed with
large, flat, very acuminate, straight, uaequal (up to 2 - 3 cm. lon^'), blackish, shining
spines. Ocrca narrowly bcrdering the mouth of the sheath, brittle and decidnous.
Leaves large, 2-3-5 metres long, not including the cirrus; petiole (30-60 cm. long)
C. OxJeyanus.'] LIECCAKI. MONOGRAPH OP THE GENUS CALAMUS. 451
10-15 mm. broad, yellowish .(when dry), polished, sparingly prickly near the base or
q u i t e smooth and flattish in the upper surface, rounded beneath, where smooth in
t h e first portion nr more or less armed throughout along the middle with short
s o l i t a r y claws; margins armed with straight, horizontiil, unequal, • brown-tippod
spines, of which some very short, and others, chiefly tho.SQ near tho base
up to 2 cm. long; rachis just beyond the j)etiole subbiconvex, in the intermediate
portion with a very obtuse and smooth angle above and with solitary claws
beneath along the middle and still moro at the sides; towards the s u m t n l t ' f l c u l e ly
bifacod above, and henenth with the claws moro or less' aggregate or hnlf-whoiled
along the middJe and solitary, scattered and numerou.s at tiie sides; tho cirrtis rather
robust and long, furnished with lialf-whorls of robust quinatc blank-tipped 'claws -
leaflets numerous, very distinctly grouped, inserted at a wider angle or sub-hori^
zontai, all in one plane (not pointing different ways) ; the groups of each side
composed of 4-10 leaflets, and the.«o in each group almost equidistant (15-22
nun, apart), the groups of one side opposite or alternate with those of the other
side and with long vacant spaces (10-25 cm. long) i n t e r p o s e d ; all leaflets of about
t h e samo size and shapo, 20-30 cm. long, 18-20 ram. broad, those near the
cirrus barely smaller than the others, thinly papyraceous, glabrous, subshining and
greeti on both surfaces, linear-lanceolate, somewhat narrowed towaid.s the bise
g r a d u a l l y acuminate to tbfi sumnnt into a subulate . b r i s t l y lip, 3- to sub-o-costulatc
u s u a l l y with the 3 central costae which are sprinkled on the upper surface with 'a
f ew black bristles (these with a bulbous white base); the other nerves • ustlally
slender and smooth or occasionally brislly; all nerves; very slender and naked
b e n e a t h ; transverse veinlets sharp and di.stinet, much ¡interrupted and not very
approximate; margins acute, very adpressedly spinulous. JUU spadh ultra-decompound,
rather large, about I m. long; primary spathe.s papyraceous, .smooth or
s p s r i n g l y prickly, tubular, not very closoly sheathing in their uppor part "where
somewhat enlarged, opened on tho ventral side and prolonged into a narrowly auricnliform,
elongate, dr.tsally keeled, somowhat flatteneil, acuminate point; secondary
spathes tubular, slightly enl.rged above, closely shc.tliing, . t r i a t e l y vciiied,' prolouaed
at the summit mto a triangular point, prickly chiefly on the outer side at °he
base, or smoolh; partial inflorescences and branchlets inserted at of- a little above ti e
mouth of their own spathe, with a more or less distinct axillary callus; tertiary
spalhes usually unarmed; spikelets spreading, inserted at tjio mouth of ' t h e i r own
spathe, slightly callous at their insertion, 2-3'o cm. long (that torminatincr the
branchlets somewhat longer) with 10-16 Irorizontal flatly bifarious flowers on each
s i d e ; spathcls bracteiform, very broad, concave, strongly deflexod, the point short'
broad, obtnse or apiculate, subtending the. flower; involucre exactly cupnlar, sometrmes
longer than broad, deep, entire, shorter than its own spathe and laterally
attached to the base of the one above. Mat, Iktera oblong and rounded at the tor.
when m bud, 4 mm. long; calyx shortly ' campanulate, faintly striafely veined
with 3 very broad, shirt, triangular, aente t e e t h ; corolla twice as long as tho calyx
or even longer; segments oblong, smooth outside, Fanmle tpadh simply deeomnound
with many partial inflorescences; pr-imary spathes as in the male snadis but
perhaps more tluck in texture and more densely p r i c k l y ; partial inflorescence,
diffuse, spreading, arched, inserted at or near the mouth of their own spathes;
ANN. ECY. EOT. GAHP., CALCUTTA V o t . X I.