SMILAX ASPERA.--The Prickly Ivy. South Europe, 1648. A trailing-habited
shrub, with prickly stems, ovate, spiny-toothed, evergreen leaves, and
rather unattractive flowers. There are other hardy species from North
America, including S. Bona-nox (better known as S. tamnoides), S.
rotundifolia, and S. herbacea, the first being the most desirable. S.
aspera mauritanica is a hardy variety, but one that is rare in
cultivation, with long, wiry shoots, and well adapted for wall or
trellis covering. They all require favoured situations, else the growth
is short, and the plants stunted and meagre in appearance.