148 
THE VEGETATION OF THE DISTRICTS OF 
shrubberies or by roadsides. Trees or shrubs or herbs that are 
only to be found in large public gardens or are only to be met with, 
as a rale, in the gardens of Europeans, are excluded except in the 
few cases, such as those of Browallia elata , H ymenantherum 
tenuifolium ) Torenia Pournieri , and Helianthus argyrophyllus which 
habitually, or such as those of Phlox Drummondi , Petunia nyctag « 
inifolia, and Alysium maritintum which occasionally occur as self" 
sown plants in garden plots or in waste corners where the soil is 
good. 
The question of showing whether a species is or is not wild, or 
whether it is or is not native, by the use of distinctive types in the 
systematic list, therefore appears neither to be practically useful nor 
to be altogether possible. All that it has appeared advisable to do 
has been to distinguish by means of an asterisk such species as may 
be certainly deemed native in the sense that (1) they are not culti- 
vated plants ; (2) they are thoroughly established plants ; (3) they 
have been either introduced by other than human agency-, or, if they 
have been introduced by man, the introduction has been inadver- 
tent and they have been obviously introduced from some part of 
South-Eastern Asia. On the other hand, plants that are not distin- 
guished by an asterisk, and among phanerogams these are about as 
numerous as plants of the preceding class, include species that cannot 
be certainly deemed native, because ( v they are only to be found in 
cultivation ; (2) they are weeds that only occur associated with 
cold-weather crops, and that do not re-appear unless their seeds are 
re-sown with these crops; (3) they are plants that, even if now 
spontaneons, have clearly been originally purposely introduced by 
man, or, if their original introduction was inadvertent, have as their 
natural habitat some country other than India, Indo-China or Malaya. 
With this class are necessarily included such species as have been 
recorded from our area by previous botanical writers, such as 
Roxburgh, Wallich, Griffith, and Voigt, but which have not been met 
with in recent years. The omission of the distinguishing asterisk, 
it is hardly necessary to remark, does not imply doubt as to the 
accuracy of the record ; when there is a doubt as to this, the fact is 
mentioned in the text. The probability is that, in most instances, 
the old records which have not been repeated are records of species 
which have appeared only as casuals in our area. A considerable 
number of recent records belong obviously to the same class ; these 
are similarly shown in the subjoined list without an asterisk. 
As one of the uses to which it is hoped those who may employ it 
will put the present List,, k the verification of some at least of these 
