PENTSTE'MON RO'SEUS. 
ROSE-COLOURED PENTSTEMON. 
Class. Order. 
DIDVNAMIA. ANGIOSPGRMIA. 
Natural Order. 
SCROPHl'LARINiE. 
Native of 
Height. 
i Flowers in 
Duration. 
Introduced 
Mexico. 
2 feet. 
1 June, Aug-. 
Perennial. 
in 1825. 
No. 316. 
Pentstemon, from the Greek rente, stemon, 
five stamens. The class, didynamia, comprises plants 
whose flowers have two long and two short stamens ; 
therefore the fifth stamen, or more properly, the 
rudiment of one, found in this genus, is somewhat 
anomalous. The same circumstance occurs in a few 
other species of this class, which occasions their ap- 
proach to the class pentandria. The trivial name, 
roseus, arose from the colour of the flower. 
This, and several other species of Pentstemon, re- 
quire a little protection against the changes of oiu" 
variable winters. It wall often be seen that a long 
and severe frost has not injured such plants as are 
somewhat tender, but that it is the alternation of cold 
and warm, of frost and sunshine, and we may add, 
drying vrinds in spring, which spread destruction in 
the flower garden, and which should be particularly 
guarded against, in February and March, when many 
exotics begin to vegetate, and are more than usually 
susceptible of such inconstancy of climate. 
Cuttings, taken in May, strike root readily imder 
a hand-glass, either with or without artificial heat. 
Or it may be raised from seeds. 
Sweet’s FI, Gar. 230. 
