DESCRIPTIVE LIST OF FLOWERS. 315 
in a thin panicle; one foot and one-half high. A smooth 
variety is P. levigatum, which is very similar, but with 
paler flowers. 
P. campanulatus.—This species is known under several 
names, such as P. pulchellus, P. atropurpureas, P. roseus, 
etc. It has large bell-shaped, pale-purple flowers, and 
long lanceolate, smooth serrate leaves; one foot high. It 
flowered finely though the last autumnal months, in our 
collection, although it was from seed the same season. 
P. ceriileus, is one of the finest of the genus, a native 
of the South, with beautiful blue flowers. Stem smooth; 
radical leaves linear, entire; cauline ones lance-linear, en- 
tire, all sessile ; sterile filament short, bearded above; di- 
visions of the calyx lanceolate, acute, glabrous. 
P. barbatus.— Bearded Pentstemon.—This is sometimes 
called Chelone barbata. It is a half-hardy perennial from 
Mexico; a splendid plant, with flower-stems three feet 
high, covered with a profusion of scarlet-orange flowers ; 
from July to September. It will be necessary to cover it 
well with pine boughs, or straw, in the winter, or it may 
be destroyed by the frost. The safest way is, to place the 
plants in a cold frame for the winter. 
When seeds can be obtained, there will be no trouble in 
raising a supply of plants. It is said to be difficult, or 
even impossible, to raise the seeds in heat. Weare inclined 
to believe there is some truth in the remark, as we suc- 
ceeded in raising only a few plants in a moderate hot-bed, 
while those sown in the open ground in May, produced 
an abundance. As the seeds are very small, they should 
only be pressed into the soil, or very slightly covered. 
The young plants should be sheltered from the mid-day 
sun. Most of the species are easily propagated from cut- 
tings or layers, which readily take root. A mixture of 
peat and loam is the best soil.for them. 
