78 THE LADIES' FLOWER-GARDEN 
4— HESPERIS FRAGRANS, Fisch. THE FRAGRANT ROCKET. 
ENGRiTiNGS. — Swt. Brit. Plow. Gard. t. 61 ; and our Jig. 3, in 
Plate 18. 
Specific CuinACTEK. — Pedicels villous, much shorter than the very 
villous calyx ; petals oblong, wavy, lower leaves stalked, lanceolate, 
runcinate, bluntish, upper leaves almost sessile, ovate, acuminated, 
coarsely toothed at the base, (G. Don.) 
Description, &c. — This species is a biennial, with flowers that are only fragrant at night. The petals have 
each a long narrow limb, and they are set on so loosely as to hang widely apart ; which, combined with their 
pale and dingy colour, gives them a faded appearance even when newly blown. The leaves are runcinate, and 
the lower ones are furnished with petioles. The pods are two-edged, with a spongy diss inside, differing in this 
respect as well as in the flowers from the species previously described, all of which have petals with an obovate 
limb, forming a compact flower ; and their seed-pods roundish or somewhat four-cornered, with a membranous 
dissepiment. The species is a biennial, a native of Siberia, introduced in 1821, and it seldom grows above six 
or eight inches high. 
OTHER SPECIES OF HESPERIS. 
H. TRISTIS, Lin.; Bot. Mag. t. 730; CHEIRANTHUS LANCEOLATUS, Willd. 
This species is nearly allied to H. fragrans, and only smells at night. The flowers are of a dirty white, or 
dingy purple. It is a biennial, a native of Austria, &c., and was introduced before 1629. 
H. RUNCINATA, Waldst. et Kit. 
This is -a biennial, nearly allied to H. matronalts, but covered with short clammy hairs. It is a native of 
Hungary, and was introduced in 1804. There are many other species, but they are rarely seen in British 
gardens. 
GENUS XIII. 
ERYSIMUM, Gartn. TREACLE MUSTARD. 
Lin. Spst. TETRADYNAMIA SILIQUOSA. 
Generic CHiHACTER,— Siliquo 4-3ided. Calyx closed. Cotyledons flat, oblong. (G. Don.) 
Description, &c.— There are many species of Erysimum, but only two or three that can be called orna- 
mental. Of these, by far the most beautiful is E. Peromkianum, which, though it may be treated as an annual, 
is found to last two or three years when protected during winter, and may be propagated by cuttings. The 
other species are mostly biennial ; and in all, the flowers are yellow or orange. The name of Erysimum is from 
eri/o, to draw, the plants having been formerly used to draw blisters in medicine. 
Synonymes.— Cheiranthus Armeuiacus, Sims ; Armenian Wall- 
flower. 
Emgratings. — Bot. Mag. t. 835 ; and oar fig. 9, in Plate 18. 
1.— ERYSIMUM IBERICUM, Dec. THE ARMENIAN HEDGE MUSTARD. 
Specific Chaiucteh. — Lower leaves runcinate, toothed, upper ones 
lanceolate, undivided ; floriferous branches and pods compressed, 
4-sided, erectly spreading. (G. Don.) 
Description, &c. — A showy flower, resembling a yellow Brompton stock, if such a plant can be imagined. 
The flowers, which are sweet-scented, appear in May ; and the species, which is a native of Mount Ararat, was 
introduced in 1803. It will grow in any common garden soil, and it is quite hardy. 
