An evergreen shrub, very hardy in our climate. It comes from North America, and from its dwarf character and free-blooming habit, it is not only one of the most useful shrubs, but may be freely planted in connection with herbaceous subjects, where it will help to redeem the deadness of beds and borders during winter (see Fig. 56). Like the rhododendron, it grows to various heights, according to the soil or situation in which it may be planted, but 18in. to 2ft. is the size at which it may often—perhaps most often—be seen producing its wealth of flowers. There are many fine flowering shrubs, but they do not gain the esteem in which this is held. Its large clusters of delicate flowers, surmounting dark shining foliage, and which seem almost too pure and beautiful to withstand the vicissitudes of the open garden, are its winning points; moreover, the flowers last several weeks in perfection. The flowers are arranged in broad panicles; the pedicels and five-cleft calyx are a bright brown colour, and furnished with short stiff hairs. The salver-shaped corolla, which is white, pleasingly tinted with red, has a short tube and five divisions, curiously cornered; the flower is fully ¾in. across, and in its unopened state is hardly less pretty than when blown. The leaves are borne on stout woody branches, have short stalks, and a bent or contorted habit; they are thick, leathery, shining, smooth, and of a dark green colour on the upper side; underneath they are a yellowish-green. In form they are elliptical and entire, being 3in. to 4in. long. Healthy specimens are well furnished with foliage; otherwise it is spare, and when that is the case the flowering is rarely satisfactory.
As this subject requires to be grown in moist vegetable soil, such as leaf mould or peat, it is useless to plant it where these conditions do not exist; moreover, the rule with species of the order Ericaceæ is to require a pure, or approximately pure, atmosphere. Doubtless these conditions will debar many from growing this shrub successfully; but I may add, where its requirements can be afforded, not only should it be freely planted, but it will probably thrive without any further care.
As a cut flower it is exquisite, if taken with a good stem and a few leaves; to many it may appear odd when I say it is too good to cut, but there are others who will comprehend me. The flowers can nowhere show to more advantage than on the bush, and it seems a pity to take its strongest branches for the sake of transferring the blossom.
It is a slow-growing subject, but easily propagated by layering the lower branches; no matter how old or hard the wood has grown, if pegged well down they will soon become rooted.
Flowering period, June to August.
Lactuca Sonchifolia.
Sow Thistle-leafed Lettuce; Nat. Ord. Compositæ.
This is one of the few ornamental species of a somewhat numerous genus; it is, moreover, perennial and hardy in this climate—characteristics not common to the family. It came from Candia, in 1822, since which time it has been grown in English gardens, more or less, as a decorative plant; it is of unusual form, especially in the foliage. I think it would scarcely be called handsome; but the flowers, which are a fine pale blue, and of the form usual to the order, are too good to be overlooked, and their value is enhanced by the fact of their being produced so late in the year.
In speaking of the flower as a subject of the pleasure garden, it is unnecessary to describe it beyond saying that it is of a rich but pale blue colour, and over 1in. across, produced on stalks nearly 2ft. high, in lax panicles. The leaves are large—about 1ft. long and 9in. wide—have a stout midrib, are pinnate, and most curiously lobed. The leaflets, moreover, are fantastically shaped, being again lobed, also toothed and bent in various ways. The teeth have spine-like points, and the only uniform trait about their form seems to be that the edges are turned backwards. The upper surface is a pale green colour, the under side grey, almost white. It is of rather neat habit, and though I have not grown it in lines, it is only needful to see one good specimen in order to be certain of its effectiveness when so planted; it would be singularly distinct.