C. Godefroyi.} BECCARI. MONOGRAPH OF THE GENUS CALAMUS. 967 
‘under name of C. síoloniferus. Teysm. & Binn. The leaflets of the authentic, like 
those of the cultivated, specimens, are usually furnished on their mid-costa near the 
base, not very far from their insertion, in the upper surface, with one but sometimes 
with two small rigid and distinct spinules, a very peculiar character of great assistance 
in the identification. In fact, amongst all the species of Calamus I have examined, 
I have found this character only in C. Rotang and very frequently in C. tenuis, which, 
however, C. horrens so much resembles that I found it no easy matter to distinguish 
the one from the other. From what I can judge from the sterile specimens only, 
C. tenuis differs from C. horrens in the petiole being more frequently armed with 
deflexed and hooked spines, but in the leaflets I have been unable to discover the 
‘slightest difference between the two. Probably C. horrens must be considered as an 
insular form of C. tenuis, a relatively widely distributed species, but in the absence 
of the spadices and fruit of the first it is difficult to settle the question. 
C. horrens in its vegetative organs approaches C. Reinwardtiit, but the first has 
black-tipped spines, a short ocrea, and Jeaflets with 3 bristly nerves in the upper 
surface, beside the characteristic spinule, which however is occasionally absent in 
some leaflets of the same leaf. 
C. stoloniferus Teysm. & Binn. is pr ge meeps by Miquel (De Palm. 27), but nowhere 
have I seen a description of it. 
To C. horrens I have also reduced C. viminalis of Reinwardt (Mart. l.c., not of 
Willd.) of which I have seen the specimens mentioned by Martius that are 
preserved in the Herbarium at Munich attached to two sheets of paper, the one 
labelled : “Java” by Reinwardt himself, the other ‘ C. viminalis ex Reinw.: Celebes 
ubi Rotang Java dicitur, Reinwardt? in the handwriting of Martius. In these 
specimens the sheathed stem is hardly 1 cm. in diam, and the leaf-sheaths are 
less spinescent than in the typical forms; the leaflets, however, are furnished with 
the characteristic spinule. I have based my description mainly on the cultivated 
specimens from Buitenzorg, usually more robust than the wild ones; they have the 
sheathed stem 2 cm. in diam. and the leaf-sheaths bear many very small black- 
tipped spines, intermingled with the usual ones; these are long, very broad at the 
base, where they are almost callous above and concave beneath; but indeed the 
armature of the sheaths in this as in the typical forms of C, tenuis is very variable 
as to the number of the spines, not as to their nature, The leaves of the 
cultivated specimens have about 40 leaflets on each side and are 11-12 m. long, 
but sometimes do not exceed 80 cm. 
PLATE 95.—Calamus horrens B/, An intermediate portion of a sheathed stem with 
the base of two leaves and of two flagella, and intermediate portion of a leaf, upper 
surface; the summit of a leaf, under surface.—From a plant cultivated at Buitenzorg 
(Herb. Becc.). T 
78. Catamus GoprrROYr Becc. sp. n. 
Description.—Scandent, slender. Sheathed siem about 15 mm. in diam. Leaf- 
sheaths rather densely armed with broad-based, underneath concave, laminar, elon- 
gate-triangular, fringed-furfuraceous, black-tipped spines. Ocrea very short. Leaves 
Ann. Roy. Bor. Garp. CarcurrA Vor. XI. 
