Us mattanensis. |, BECCARI. THE SPECIES OF CALAMUS,—SUPPLEMENT. 109 
grooved along the centre, the margins inconspicuously erosely toothed, the point 
very appressed, bluntish or slightly produced. Seed ovoid, oblong, rounded at both 
ends, 8 mm. long, subterete, 5 mm. thick; its surface pitted and superficially 
tabercled; chalazal fovea superficial, inconspicuous; embryo basal. Fruiting perianth 
very distinctly pedicelliform, terete,;2 mm. long. 
HasrrAr.—I received the specimens of this very; distinct species from the 
Director of the Botanical Garden of, Buitenzorg; they were collected on the Barito 
in Central Dutch Borneo, 
OssrnvATIONS.— This Calamus is very distinct for its leaf-sheaths which are 
scabrid, like a coarse rasp, |owing to the peculiar spinescence, very similar to that of 
C. asperrimus. {It is, however, related to C. pogunacanthus, from which it is 
distinguishable by its very irregularly set pluricostulate leaflets, quite smooth on both 
surfaces, and by the ellipsoidal rather small fruit, subtended by a conspicuous 
terete fruiting perianth and having glossy light coloured scales, It is allied to C. 
caesius, and the fruiting spadices of the two are very much alike, but the fruits 
of the latter although very similar are considerably smaller than those of the other. 
SUPPL. PraTE 60.—Calamus trachycoleus Bece. Portion of the sheathed stem 
and of a leaf; portion of the fruiting spadix. The type specimen in Herb. 
Beccari. 
166. Caramus Manan Miq. Add:—Ridley, Mat. Fl. Mal. Penins. ii, 196. 
This large Rotang has been collected according to Ridley in the Malayan 
Peninsula on Bukit Senaling, near Serembang in Negri Sembilan (S. Moorhouse), 
Native name “‘Rotang manok telor.” I have not seen Ridley’s specimens from 
this locality, and I think that it would be advisable to compare them with those 
upon which I have founded C. giganteus, a species however very closely related 
to C. Manan, and perhaps only a variety of it. 
167. CALAMUS GIGANTEUS Becc. 
This is probably only a variety of C. Manan Miq., from which however it 
differs in the leaf-sheaths armed with much larger spines, and especially in the 
form of the spathels which are rather broadly infundibuliform in C. giganteus, 
while they are almost cylindrical in the specimens of C. Manan from Sumatra, 
The fruit of C. giganteus seems also smaller than that of C. Manan. In any case 
C. giganteus Becc. has no relation to OC. ornatus, to which it was reduced by Ridley 
(Mat. Fl. Mal. Penins. ii, 196). 
170. CALAMUS PALLIDULUS Bece. Add:—Ridely, Mat, Fl. Mal. Penins. ii, 209. 
179. CALAMUS MaTrANFNsIS Bece. 
A specimen with a male spadix of this species, of which the sterile plant 
only was known has been collected by J. Hewitt in Borneo ; at Kuching in 
Sarawak, and has enabled me to recognize its great affinity with C. ferrugineus, 
The male spadix in Hewitt’s specimen is so much like the female one of C. 
ferrugineus, that I can hardly find different words to describe it; as in the latter 
it is densely covered in every part with a removable dark rusty-furfuraceous 
