Alps. The plant is variable in habit, in the colour of the 
foliage, and its glaucousness; the Zurich variety is denser, 
deeper green, and has stouter racemes of more numerous 
flowers than the Monte Rosa ones, the lower leaves of which 
are of a lovely glaucous hue, variegated with red-purple, and 
the inflorescence laxer and fewer flowered. 
The species has been transferred from genus to genus 
until the late settlement of the Thlaspideous crucifers in the 
‘Genera Plantarum.’ There.can, I think, be no doubt that 
it is a close ally of the more Eastern forms that constitute 
the genus Jheridella, which differ from Thlaspi in the acute 
pod, from Léeris in the equal petals, and from Hutchinsia in 
the long style and foliage. 
Descr. A densely-tufted, more or less glaucous-green, 
glabrous herb, with a long perennial tap-root, that burrows 
deep amongst stones. . Stems three to six inches long, ascend- 
ing. Leaves mostly opposite, small, fleshy, one-third to three- 
quarters of an inch long; radical petioled, broadly obovate 
or almost orbicular, quite entire or obscurely sinuate-toothed ; 
cauline sessile, obtuse or auricled at the base. Flowers half 
an inch in diameter, in cylindric, crowded, erect racemes, pale 
lilac, with a yellow eye; pedicels horizontal.—J. D. H. 
Fig, 1. Flower, 2. Ditto, with the calyx and pet 
—all magnified. alyx and petals removed. 3. Ovary: | 
