174 
PHYSOSTEGIA IMBRICATA. 
varied, any addition to our previous stock requires only to be known as a plant 
worthy of cultivation, to be at once brought into extensive notice, and eagerly sought 
after by all persons possessing a flower-garden or border. 
The subject of our present figure is a plant of no inconsiderable merit, and every 
person who .possesses any acquaintance with the bold and showy species comprised 
in the genus Dracocephalum^ will at once detect a striking resemblance to them in 
the present plant. Indeed the genus of which this plant is a member, is very 
closely allied to that above adverted to, and few individuals, except practised 
botanists, would observe any material distinction. The chief point of difference is, 
that in the genus Physostegia^ the calyx is inflated after the flowers have faded. 
Our figure differs so materially from that given in the Bot. Mag. p. 3386, that 
we were inclined to consider this plant must be the P. truncali ; but on a further 
examination, sufficient identity may be found in its habits and mode of inflorescence 
to induce us to publish it under this name. It is, we believe, percectly hardy ; 
but a few plants kept in pots in the greenhouse will have a very good effect. It 
may be propagated by seeds or offsets. 
This is another of the elegant plants for a drawing of which we are indebted 
to Messrs. Young of the Epsom nursery, from which establishment our figure was 
taken in October 1837, and whence plants of it may be obtained. 
The generic name is taken from phgsa, a bladder, and stege, a covering, alluding 
to the bladder-like nature of the calyx. 
