ORIGIN OF THE DEADNETTLES IN BRITAIN 359 
and the Orient. It is so common in most parts of this area and 
so free in its choice of localities that it is impossible to say where 
it exists as an unaided and indigenous plant, and where it is 
introduced. Here and there one finds it recorded from clearings 
, and I fear we are hardly justified in claiming it 
as an indigenous plant until, being known in some spot which has 
long been undisturbed, it is so proved to be capable of existing 
ow 
above) which the most diligent search has failed so far to reveal 
in wild situations, and it does not seem probable that all these 
have been lost as wild plants. It is, however, possible that they 
are derived from wild stock, and have become so much changed by 
= . 
in 
found in the surrounding country in fields and waste places. — This 
species, I would suggest, is the progenitor of Lamiwm amplewxicaule. 
If this be correct, we must imagine that, in ancient times, before 
