200 PENTSTEMON ' OVATUM. 
season, produces a great increase in its size, and in all such plants such a result is 
of considerable consequence in some cases. 
P. ovatum was discovered many years ago, by Douglas, inhabiting limestone 
rocks, on mountains about the grand rapids of the Columbia, in Northern America, 
and sent to the Horticultural Society. It flowers the greater part of the summer, 
and is easily increased by seeds or division of the plant. It may be grown on a 
rockery, the smallness of its flowers rendering it an appropriate associate for alpine 
plants, or planted in a shrubbery border, and encouraged to grow strongly, thereby 
enabling it more creditably to occupy a position there. We are indebted to the 
Messrs. Chandler, of Vauxhall, for the opportunity of preparing a drawing. 
Pmtstemon is from pente, five, and stemon, a stamen, there being five of those 
organs in each flower, — four perfect, and one imperfect. 
