142 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. (C. Kerrianus 
slightly narrowing above to a |bluntish point, obsoletely trigonous, 5—6 mm. long 
1:5 mm. broad; the calyx tubular-cyathiform, broadly 3-toothed, striately Kawal, 
the corolla twice as long as the calyx, its segments lanceolate, acute, finely ui 
veined. Female spadiz......... 
Hapirat,—Siam: at Doi Sootep, 900 m. elev., collected by A. F. G. Kerr, 14 
Jan. 1912 (No. 1618 B in Kew and Beccari Herbaria). i 
OssERVATIONS.— Of this Calamus the male plant only is known, and this fact 
renders the validity of this species somewhat uncertain, because in the group 
to which it belongs there is C. Doriaci which is known only by its fruit, and 
apparently C. Kerrianus seems somewhat related to that species. "In the leaves 
with elliptical pluricostulate, eoncavo-convex, distinctly grouped leaflets, it approaches 
some of the varieties of C. latifolius, but the armament of the leaf-sheaths of C. 
Kerrianus is peculiar: its lax, subflagelliform male spadix having small, very 
regular, flattened, comb-like spikelets, distichally disposed on its partial itto 
is also characteristic. : 
SuPPL. PLATE 83.—Calamus Kerrianus Bece. Portion of the sheathed stem with 
an entire male spadix; intermediate portion of a leaf. From Kerr’s No. 1618 B 
in Herb, Beccari. 
