This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
- Shrubs with or without spines, whose fruits retain the convergent calyx-leaves until maturity. This tribe is more easily distinguished from the others by the number of the leaflets (from 7 to 15) than by all the other characters. The varieties called Scotch Roses of our gardens belong to this tribe. The species most worthy of notice are: R. pimpinellifolia, syn. R. spinosissima, the Burnet or Scotch Rose, so named from its small rounded leaflets, recalling those of the common Burnet. It is a native shrub, usually forming dense bushes 2 to 3 feet high, with about 7 orbicular dentate leaflets to each leaf. The flowers are small and solitary, quite white or shading off to yellow around the centre. This charming little Rose has produced several double varieties, amongst which we may mention the Double White, Double Yellow, Estelle, with rose-coloured flowers, and Stanivells, with delicate rose-coloured flowers, said to be perpetual flowering.
There is a very small-flowered form in the South of France, considered a distinct species by De Candolle and Lindley, under the name of R. myriacantha, besides many other forms found in this country, which have received specific names.
R. sulphurea, Sulphur-coloured Rose. - A bush 3 to 6 feet high; leaves with 7 glaucescent leaflets; stem armed with unequal spines intermingled with bristles. The flowers are large and very double, of the most beautiful yellow; but they do not open well, which may perhaps be attributed to unfavourable conditions of cultivation. The celebrated Banks affirms having seen it flower in the most perfect manner upon swampy ground.. Linnaeus confounded this species with the Eglantine, R. lutea, which is now known to be an entirely distinct species. It is not known whence it comes, but we have reason for believing it to be a native of Western Asia. Its principal varieties are the Old Yellow with large very full flowers of a bright yellow, and the Yellow Pompon which differs only in its smaller dimensions.
R. alpina, the Alpine Rose, is found on all the principal mountain chains of Europe, and grows from 5-10 feet high. The stems are erect, almost spineless, or sparsely furnished with spines, often of a purple-brown colour. Leaves with 7 to 9 oval or elliptical acute dentate leaflets. Flowers solitary, of a rdddish carmine; fruits orange-red when ripe. This species, like most of the others, is extremely variable according to localities, and consequently its synonomy is very complicated. Cultivated for a long time in our gardens, it has produced a great many varieties, doubtless through intercrossing with other species, of which the Boursaults are the most important. These are supposed to have been the result of a cross between this species and the Tea Rose of China. Amadis is one of the best of this class, being very hardy, a profuse bloomer, and almost destitute of thorns, with a climbing habit. The flowers are large, semi-double, and of a deep purple colour. No class of Roses is better suited than this for covering trellis-work or dwelling-houses.