ERYSIMUM. 
E. pachycarpum makes a stout growth at high elevations in Sikkim 
and Tibet, branching, erect, and 18 inches or 2 feet high, with spikes 
of orange-yellow. 
E. pallidum, in the alpine rocks of Lycia, has the habit of 
E. alpestre, growing about half a foot or less, with medium-sized 
flowers of pale yellow. 
E. x Perowskianum is the garden hybrid usually known as Cheiran- 
thus Allionii, a beautiful but almost biennial impermanence in many 
places, with loose spikes of very dazzling orange-fiery flowers—though 
not, in habit of 9-inch or foot-high stems, particularly well suited to 
the standards of the rock-garden. 
E. pseudocheiri is an obscure species, with big yellow blossoms, a 
dwarf close habit, and grey leaves crisp with curly fine down. 
E. pulchellum can grow from 1 to 2 feet high, and it can also earn 
its name for daintiness by not exceeding 2 inches. It makes a tuft 
or mat of oblong spoon-shaped leaves, deeply toothed, with the end 
lobe the largest, while the narrower stem-leaves are also sharply toothed. 
The flowers are brilliant, of an intense and flaming orange-gold. The 
variety HZ. p. microphylla of this species, an alpine form from the 
Bithynian Olympus, is dwarf, and has untoothed oval foliage: it has 
also been called Cheiranthus rupestris. There is yet another dwarf 
toothless form, EZ. p. Calverti ; and E. pectinatum from Taygetos, &c., 
differs chiefly from the species in being hairy and carrying its pod 
perfectly erect instead of in a rather spreading fashion. 
E. pumilum is one of the most beautiful of all. It may be seen in 
sunny dry slopes of the Alps (but not in Switzerland), as for instance on 
the gypsum dunes of the Mont Cenis, making quite frail tufts of 
narrow green foliage, and then sending up inconspicuous stems almost 
entirely bare of leaves, and only 2 or 3 inches high, which carry a wide 
head of bright pale refulgent-yellow blossoms so enormous for the 
plant as wholly to conceal the stem that carries them, and the clump 
of leaves from which they spring. All over the flowery ups and downs 
its wide domes of clear living light stand definitely out among the 
commoner yellows, like patches of living moonlight in the broad day. 
Nor does it fail of similar loveliness in the garden, but should be kept 
starved in the moraine, lest its stature exceed the alpine limit. It 
may always be known, if there were any doubt, from E. helveticum ; 
in the first place it is never found in Switzerland ; in the second it 
hardly ever has any, and then only a few, leaves on the stem, whereas 
E. helveticum always has a good many; in the third, that stem is far 
shorter, the whole plant dwarfer, and the flowers of incomparably 
fuller size and splendour and refulgence of calm colour. 
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