C. polystachys.) BECCARI. THE SPECIES OF CALAMUS.—SUPPLEMENT 71 
rhomboidal with blunt apices, of a light straw colour and with narrow whitish edges, 
slightly convex and very slightly or  obsoletely grooved along the centre, the 
margins very finely ciliate-erose. Seed somewhat longer than broad, flattened, equally 
rounded at both ends, 7:5 mm. long, 65 mm. broad, 4 mm. thick, slightly 
convex and uneven on the antiraphal side, flattish and with a central circular 
chalazal fovea from which radiate several shallow furrows on the raphal side; 
albumen homcgeneous ; embryo basal. 
Hapitat,—Sumatra: Palembang on the River Biroo; collected by Buurman van 
Vreeden, 25th Feb. 1892. Specimen in the Buitenzorg Museum variorum No. 119. 
Vernacular name ‘‘Rotang Sego aer." Probably its Kotang is a valuable one, as 
the name of ''Rotang Sega” or “Nego” is given by the Malays to the best com. 
mercial kinds, 
OssERVATIONS.— The affinities of C. palembanicus are not very apparent; it seems 
to approach C. densifbrus especially in the structure of the spadix. It is distin- 
guishable by its woody leaf.sheaths, not exactly cylindrical, but with a somewhat 
larger diameter above than at the base, armed with robust broad-based underneath 
concave spines; by the leaves with few, 3-costulate, lanceolate, acuminate leaflets, 
which are more or less distinctly geminate on each side of the rachis, and have 
very long vacant spaces interposed between the pairs; by the spadices with thickish 
rigid branches, and infundibuliform loosely sheathing slightly prickly spathels; by 
the short and thick spikelets with approximate spathels and very closely packed fruits; 
by the fruits being ovoid with light-coloured, obtuse, not or obsoletely grooved 
scales; and by the oblong flattened seed with a central rather deep chalazal fovea, 
and by the homogeneous albumen and basal embryo. 
Suert. PrarE 40.—Calamus palembanicus Becc. Portion of a sheathed stem; 
basal part and intermediate portions of a leaf; branchlets of the fruiting spadix. 
From the type specimen, in the Buitenzorg Herbarium. 
134. Carawus RipLEYANUs Becc. add :—Ridley, Mat. Fl. Mal. Penins. m" IN. 
Add to the localities the following given by Ridley: Mandai; Johor, 
Gunong Pulai. 
137. CaraMus POLYSTACHYS Bece. 
OsSERVATIONS.—1 have described this species from specimens gathered from a plant 
of uncertain origin, cultivated in the Buitenzorg Botanical Garden. Now I have 
found in the Buitenzorg Herbarium portions of female spadices with unopened flowers, 
numbered No. 3594, collected by  Teijsmann at Muara dua in Sumatra, Province 
of Palembang which correspond exactly with the cultivated specimens described by me. 
There is therefore little or no doubt that the cultivated specimens are derived from 
seed brought by  Teijsmann from the above mentioned locality in Sumatra. 
Teijsmann’s specimen is labelled Calamus rhomboideus Bl. and bears the vernacular name 
‘¢Hui-ulet”. There remains however some doubt whether this label was not that of 
quite another plant collected in the same locality, as C.  polystachys is a species 
