The Crown Imperial, a native of the East, most probably of Persia, was introduced according to DODONAEUS, into the gardens of the emperor and some of the nobility at Vienna in 1576; it appears to have been cultivated here as early as 1596: both GERARD and PARKINSON describe it minutely, the latter on account of its "stately beautifulness, gives it the first place in his garden of delight." It flowers usually in the beginning of April; the whole plant sends forth a strong unpleasant smell, compared by most writers to that of a fox, perceptible when you approach it; to this effluvia PARKINSON endeavours to reconcile us by saying that it is not unwholesome; it is so disagreeable however, that few choose to have many of these plants, or those in the most frequented parts of their gardens, yet it ought not to be proscribed, for independent of its beauty, there is much in it to admire, and especially its singular Nectaria, which in the form of a white glandular excavation decorate the base of each petal; in these usually stands a drop of clear nectareous juice; the peduncle or flower-stalk which bends downwards when the plant is in flower, becomes upright as the seed ripens. Of this plant, as of all others which have long been objects of culture, there are many varieties; those most generally cultivated in our gardens are the common orange-flowered single and double, yellow single and double, gold-striped leaved, and silver-striped leaved; the Dutch in their catalogues enumerate thirteen varieties. Luxuriant plants will sometimes produce a second and even a third whorl or crown of flowers, and the flat-stalked ones which are monsters, have been known to produce seventy-two blossoms, but none of these are found to be constant. The Crown Imperial, though a native of a much warmer climate than ours, is a hardy bulb, and not very nice in regard to soil, succeeds best in such as is stiffish, enriched with manure, and placed in a sheltered situation. Is propagated by offsets, which are produced in tolerable abundance. [Illustration] [195] CHEIRANTHUS MUTABILIS. CHANGEABLE WALL-FLOWER. _Class and Order._ TETRADYNAMIA SILIQUOSA. _Generic Character._ _Germen_ utrinque denticulo glandulato. _Cal._ clausus foliolis duobus basi gibbis. _Sem._ plana. _Specific Character._ CHEIRANTHUS _mutabilis_ foliis lanceolatis acuminatis argute serratis, caule frutescente, siliquis pedunculatis. _Ait. Hort. Kew. v. 2. p. 395._ The present species of _Cheiranthus_, unknown both to MILLER and LINNAEUS, was first described in the _Hortus Kewensis_ of Mr. AITON, who informs us that it was introduced to the Royal Garden in 1777, and found wild in the Island of Madeira by Mr. MASSON.