127 
: 7 ae may be related to S. ovalifolia, of Malaya, and to S. 
uspidata, from ae but with its trigonous seeds and large 
atin it is unlike any other species, and must be regarded as 
a plant of pa antiquity. 
The genus therefore appears to afford valuable material for 
the study of the problems of endemism in the Archipelago, which 
with the increase of our knowledge will well repay further and 
more detailed investigation. 
The Flora of Ceylon has recently been examined with regaia 
to its endemic constituents, and as Trimen’s Flora has, been 
taken as the basis from which deductions have been drawn it is 
no means good, has resulted in the memeber nh of nine Sbawabes 
species of Pirpchass, five of which are endemic. Two of these are 
represented in S. India by closely allied but — distinguished 
species, and three appear to be peculiar to the : 
Particulars are set out in tabular form. 
ae S. India. Andaman Is. 
Endemic spec Representative species. 
8. oe ‘Clarke and 
None. 
8 coriacea, tie. 
: Thw. ... &. colubrina, Linn. 
S. trichocalyx, A. W. Hill 8S. Dalzellii, Clarke. 
S. cinnamomifolia, Thw.... 8. cinnamomifolia, Thw. S. tubiflora, 
var. Wightit, A.W. A. W. Hill. 
Hill. 
Species common to Ceylon and India. 
S. lenticellata, A. W. Hill  S. loniseolidte, AW, 
Hill. 
S. Nux-vomica, Linn. ... S. Nux-vomica, Linn. 
S. potatorum, Linn. ... SS. potatorum, Linn. 
Of the species common to Ceylon and India, three (S. Nua- 
vomica, S. potatorum and S. lenticellata) are dry country plants, 
and their occurrence in the drier parts of Ceylon, which may be 
PA roe both from the physical and geographical standpoint 
to be of India, is to os expected. S. cinnamomifolia is a 
moist eine plant of the tropical eet and occurs in India 
m the forests of Travancore, etc. Here, again, physical con- 
itions are very similar, and the floras of the two regions show 
