GEOGRAPHICAL DISTRIBUTION. 49 
. Burma is rich in Calami, especially in its littoral regions. Tenasserim and the 
Mergui Archipelago, though botanically very little known, have supplied very peculiar 
forms, many of which belong to the group with long open flat spathes, such as 
C. platyspathus, C. nitidus, ete. Especially characteristic of the littoral regions of Burma 
are (OC. hypoleucus, C. leucotes and C. myrianthus which have their leaflets coated 
on their lower surface with a more or less white pulverulent or chalky indumentum. 
Of the 9 species growing in the Andaman and Nicobar Islands, C. longisetus is also 
found in Burma, C. viminalis and C. palustris are widespread species, and C. unifarius 
Peníon; isa curious geographical form of a Javanese species. The others are endemie, 
but of these C. pseudo-rivalis, C.  Helferianus and C. andamanicus appear somewhat 
alied to certain Ceylon species. i 
One of the principal conditions of existence for Calami being an abundant humi- 
dity of atmosphere, they are absent from the dry and hot regions of the Indus and 
Upper Gangetic Plains, and from the Central Provinces. 
Southern India, including Sir J. D. Hookers provinces of Malabar and the 
Deccan, has 12 species: of these C. Rotang is found also in Ceylon unmodified 
three others also occur in Ceylon, but are represented on the continent by varieties of, 
geographical species—C. Thwaites var. canaranus, C. pseudo-tenuis, C. Metzianus—( = 0, 
rivalis ? ); the remainder are endemic. - 
Ceylon has 1l species, of whicb 7 are endemic and 4 are represented by varieties 
or reappear unchanged on the Continent. The South Indian and Ceylon Calami taken 
as à whole are nowhere to be found north of Lat. 17? N. 
Of the Ceylon Calam, C. delicatulus appears allied to C. nicobaricus and C. Helferianus, 
C. rivalis to C. pseudo-rivalis, and C. ovoideus to C. andamanicus. 
The Indian non-endemic species of Calamus, not including the Malayan Peninsu- 
lar, are as follows:— C. viminalis, C. tenuis, C. palustris, C.  unifarius. If the 
Malayan Peninsular species be added to the four just enumerated, we have the 
following non-endemic:—C. javensis, C. paspalanthus, €, Diepenhorsti C. ornatus, C. 
Scipionum, C. viridispinus, C. caesius, C. Ozleyanus. 
Of these non-endemic species of the Malayan Peninsula, we find in Java C. 
viminalis, C. javensis, C. ornatus ; in Sumatra C. Diepentorstii, C. ornatus, C. Scipionum, 
C. viridispinus ; finally in Borneo C. javensis, C. puspalanthus, C. Diepenhorstii, C. ornatus, 
C. Sceipionum, C. caesius. 
The Indian Calami that have the widest geographical distribution are C. tenuis, 
C. viminalis, C. palustris. i 
The following is a summary of the geographical distribution of the species of 
Calamus in India, according to the botanical provinces proposed y Sir J. D. 
Hooker in his “Sketch of the Flora of British India”:— 
Province. Specie, 
I. Eastern Himalaya es eis eos 
II. Western Himalaya e vii is 1 
III. Indus Plain bes vid is à 
IV. (a) Upper Gangetic Plain - E as e 
(b) Bengal and Sundrabans T. n sig 5 
V, VI. Malabar and Deccan i cis bi 12 
VII. Ceylon s $i. ee ies 11 
VIII. Burma A ee oes on 22 
1X. Malay Peninsula - 222 ET 31 
Ann. Ror, Bor. Garp. Carcurta Vor. XI. 
hA. FS 
