Thistle.

The Thorn-apple, though not a common wild plant, may occasionally be met with, growing on waste spots, rubbish heaps by the roadside, and similar places. The large size and brilliant whiteness of the flowers, the bulk and peculiar character of the spiny fruit, make it a very striking object, and admirably fitted for a share of the ornamentist’s regard. It is a plant of Eastern origin, and was unknown here until the reign of Elizabeth; we therefore do not find it in any of the art-work before that date, nor, indeed, do we remember to have ever seen it

Thorn-apple.

in any way introduced in later designs: this, no doubt, is partly owing to the comparative rarity of the plant. Its scientific name is Datura stramonium, the generic name being derived from tatorah, the name of the plant in Arabic. The whole plant is powerfully narcotic in its effects. In the quaint pages of Gerarde, published A.D. 1636, we learn the history of its introduction into England. Gerarde was the director of the botanical garden of Lord Burleigh; hence he received many rare plants from abroad for cultivation. In speaking of the Datura, he says, “whose seeds I have received of the Right Honourable the Lord Edward Zouch, which he brought from Constantinople, and of his liberalitie did bestow them vpon me; and it is that thorn-apple that I have disposed through this land.” In some botanical works we find it asserted that the thorn-apple was introduced into Europe in the Middle Ages by the gypsies, who, in their wanderings, brought it from Asia; but the declaration of Gerarde is so positive and explicit, that it seems difficult to admit any other belief, more especially as he accompanies his statement by an illustration which, though very rough and quaint, is quite sufficiently like the natural plant to prove that it was not some other species introduced by him and wrongly named. Drawings of the thorn-apple may be consulted in E. B. 935; F. L. vol. vi. 17; M. B. 124; S. C. 6; P. F. 13.

The Tormentil (Potentilla tormentilla) has already, to some extent, been referred to when speaking of an allied species, the cinquefoil. The flowers, though typically composed of four petals, are frequently to be found with the petals five in number, the calyx in that case being cleft into ten segments instead of the normal arrangement. We are not acquainted with any example of the use of the tormentil in ornament, but the wood-strawberry (Fragaria vesca), an allied genus of the same natural order, has a similar form of calyx, the segments being alternately large and small, and twice as numerous as the petals; and this beautiful ornamental feature is very carefully shown in a sixteenth-century MS. at the British Museum, where the plant is introduced in one of the borders. Consult E. B. 430; F. L. vol. v. 35; or P. F. 94, for illustrations of the natural growth of the tormentil.

Our remaining illustration has been suggested by the Water Crowfoot (Ranunculus aquatilis), one of the numerous species of buttercups, but distinguished from its allies by the petals of the flowers being white, not yellow, as in the case of the other members of the family, and also from the habitat of the plant, the blossoms being found floating upon the surface of quiet water-courses. The crowfoot may be met with in flower throughout the summer, and, where seen at all, is ordinarily very abundant, so that at a little distance the whole surface of a large pond will tell upon the eye as a mass of white, from the innumerable blossoms thickly scattered over the water. The English name crowfoot has arisen, like many similar names, from the supposed resemblance of the plant, or some portion of it, to some other natural object; thus we get crane’s-bill, cock’s-foot grass, lark’s-spur, bee-orchis, pheasant’s-eye, and many other such examples among our common names for plants. As a family, the buttercups must be regarded with suspicion on account of their strongly developed acrid qualities; thus the leaves of the R. flammula, if applied to the skin, will, in a very short time, cause large and painful blisters. The R. acris is equally poisonous; and the R. arvensis, or corn crowfoot, is extremely injurious to cattle and sheep. The R. aquatilis does not possess these dangerous qualities; on the contrary, it may be collected and given as fodder in times of scarcity or drought, and the animals will not only eat it, but thrive upon it. It is a very

Water Crowfoot.

widely spread species: the placid waters of regions so different from each other in climate as Lapland and Abyssinia are equally favourable to its growth, and the lakes and slowly running streams of California are powdered over with its brilliant blossoms, as we see them in our English pools. The water crowfoot affords us also a beautiful example of that adaptability of form to the circumstances of the plant’s existence which we may so frequently trace in the works of nature. It will be noticed in the illustration that two very distinct forms of leaf are represented; and, on examining the natural plant, it will be found that the simpler form of leaf floats upon the surface of the water, while the lower and more minutely divided leaves are submerged. Imagine the respective positions of these leaves reversed, and it would speedily be apparent that the finely cut leaves were unable to support the blossoms, and to expose them to the vivifying rays of the sun, while the simpler form of leaf would, by the action of the water, speedily be torn into long shreds, the principal veins alone remaining, and very much resembling the actual form that we meet with in the case of the submerged leaves. In employing the water crowfoot in ornamental art, it appears to us that the two great features most highly characteristic of it, and therefore to be embodied in a design, are, first, the number of its blossoms; and, secondly, the two distinct kinds of leaf; the simpler form being the most prominent, but the other, though subordinate, as in the case of the natural plant, to be indicated, and its presence felt. The R. bulbosus is the species so frequently met with in the carvings of the Decorated period of Gothic art, an especially beautiful example of its use being seen in a capital in the doorway in the Chapter-house at Southwell Minster, Notts. The R. aquatilis, so far as we have had opportunity of observation, appears to have been entirely overlooked. Illustrations of the water crowfoot will be met with in V. W. 95; E. B. 18.