D. Lewisianus. ) BECCARI. THE SPECIES OF DAEMONOROPS. 89 
Herb. Kew. and Caleutt.) Griffith gives the Malayan name of “ Rotang Kichum.” 
The analogous name “R, Kusom” is applied in Pangkore to D. petiolaris. 
OssERVATIONS.—Of this species I have seen the type-specimens in the Herbaria 
of Kew, St. Petersburg and Calcutta, but they are al in a very fragmentary 
state, and with female spadices only, while those of Gaudichaud preserved in the 
Herb. Delessert at Geneva and in Florence (Herb. Webb) and Paris, which 
have been studied also by Martius, bear male spadices only without the outer 
spathe. My description of the male-spadix and flowers is derived from Gaudichaud’s 
specimen. 
Ridley’s specimens (No. 9466) have a portion of a leaf (probably from the © 
intermediate part of the stem) with numerous, closely-set, equidistant leaflets, which 
are very long and narrow (30—35 cm. in length, 12-13 mm. broad) with almost 
parallel margins from a little above the base, where they are very suddenly back- 
wardly plicate; the mid-costa underneath is very finely bristly-spinulous from base to 
apex. The spadices of these specimens are male only, and are somewhat larger 
than those represented in Griffith's plate, The outer spathe in one specimen is nearly 
40 em. long (including the beak) and is armed with numerous, long, slender, often 
criniform spines, which are deflexed, especially those along the centre; the beak 
itself is in length one-fourth of the entire spathe; the second and third spathes are 
armed on their upper parts with erect slender spines which are callous at the base, 
Owing to the incompleteness of the type-specimens I must acknowledge that I 
have not a very clear idea of this species. It seems to me very closely 
related to D. petiolaris from Malacca, of which it is perhaps the representative 
form in Penang; it differs, however, from this in its leaflets being not distinctly 
9-costulate and perhaps in its comparatively large male flowers, and also in the 
very few-flowered female spikelets. Griffith describes the leaflets of C. Lewisianus 
as having the mid-costa bald on the lower surface, and really in a portion of a 
leaf from an authentic specimen in the Calcutta Herbarium, the line of close small 
bristles along the mid-costa on the lower surface is wanting, and only a few of 
them may be seen near the apex; I have observed the same fact in the St. 
Petersburg specimens, while in those of Gaudichaud, which have been referred by 
Martius, as also by myself, to D.  Lewisianus, the bristles are rather numerous, but 
apparently they are deciduous in old leaves. 
The diagnostic characters of D. Lewisianus are:—Stem non-scandent. Leaf-sheaths 
armed with long, laminar, subulate scattered or subseriate non-confluent spines; leaflets 
of the lower leaves narrow, numerous, equidistant, rather close set, not distinctly 
3-costulate; spadices rather closely approximate to the apex of the plant, axillary 
(in appearance), very shortly peduncled; outer spathe armed with scattered long 
slender spines, the beak comparatively short; partial inflorescences of the female 
spadix with very few, few-flowered spikelets; involucrophorum 2-3 mm. long; areola 
of the neuter flower suborbicular with a semi-circular swollen border. Frust spherical 
small, suddenly beaked. 
Ann. Roy. Bor. Garp. Carcurra Vor. XIJ. 
