The Black Bryony (_Tamus communis_)--order _Dioscoriaceæ_--is a pretty climbing plant, the slender stem of which twines for several feet among the hedgerow trees and shrubs. Its leaves are cordate and acute, and change either to a bright yellow or a beautiful bronze colour in the autumn. The flowers, which appear in May and June, are yellowish green, in small clusters; and the fruits are oblong berries, turning to a bright scarlet as the leaves assume their autumn tints. [Illustration: THE WILD ARUM.] Our next flower is the peculiar and interesting Wild Arum (_Arum maculatum_), of the order _Araceæ_, also known as Lords and Ladies, Cuckoo Pint, and Wake Robin. It is a very common flower of shady waysides, blooming during April and May. The plant is succulent, with a short, fleshy rhizome; and large, smooth, sagittate leaves that are often spotted with purple. The floral stalk is thick and fleshy, and supports numerous unisexual flowers which are clustered round a central axis or _spadix_ that is prolonged above into a club-shaped appendage. The whole of the spadix is surrounded by a large bract or _spathe_ which is contracted a little distance above its base. The portion of the spathe below the constriction encloses the flowers, and remains permanently closed as long as they are in bloom; but the upper part opens on one side, just before the flowers begin to mature, exposing the club of the spathe. The club is thick and fleshy, and coloured either dull purple, bright red, pink, or yellow. The pistillate flowers are clustered round the bottom of the spadix, and consist of a number of sessile ovaries. Above them is a ring of imperfect flowers consisting of styles only, and above these again is the cluster of staminate flowers, with some aborted stamens at the top. After fertilisation has taken place the spathe and the spadix soon wither away, and the ovaries develop into a cluster of large berry-like fruits, each containing a few seeds. These fruits, mounted on the summit of the lengthened, fleshy peduncle, are very conspicuous objects in the autumn hedgerows.