R. OCHROLEUCA.--In stature, foliage, and mode of growth this is like the Scotch Rose, but its flowers are of as bright and rich a yellow as those of the Austrian Yellow (_R. lutea_). Where _R. lutea_ does not grow well, this will be an excellent substitute. A native of Siberia.
R. POMIFERA (Apple Rose).--This is, perhaps, the most striking of Roses in regard to its fruit. The hips are 1 to 1½ inches long, apple or pear-shaped, of a fine bright red, and covered with bristles. It is a species that requires generous conditions at the root to be seen at its best. _R. mollis_ and _R. tomentosa_ belong to the same group, and have also fine red fruits, but they are much smaller than those of _R. pomifera_.
R. RUGOSA (Japanese Rose).--No plant has come to the front more rapidly in recent years than this Rose. It was introduced from Japan in 1845, but appears to have been neglected. It is one of the very hardiest of Roses, as well as one of the sturdiest and most robust. The leaves are very handsome, the leaflets being of a rich green and wrinkled. The flowers in the wild type are rosy crimson, but there is also a white variety, and seedlings give quite a variety of shades. It hybridises freely with other species and garden varieties, and has in this way enriched our gardens with many good hybrids, Mme. Georges Bruant and the Coubert Double White among them. The fruits of _R. rugosa_ are orange-shaped, scarlet red, and of large size--altogether very ornamental.
[Illustration: _HYBRID ROSE UNA, A SHRUBBY GROUP ON GRASS._
(_Bed is 70 feet in circumference and contains 15 plants._)]
R. SERICEA.--For some reason this Rose has never obtained the recognition it deserves. Perhaps its comparative rarity may account for this. It is the earliest of all Roses to flower out of doors, its first blossoms opening as a rule towards the latter end of May; the flowers are creamy white. In the cooler days of May and early June it lasts longer in bloom than many of the later flowering species do. It has one very distinctive character, in the petals being nearly always four (instead of the usual five) to each flower. Sometimes the bark of the young shoots is a bright red. A native of North India.