ROSA GLOMERATA Rehder & Wilson in Plantae Wilsonianae vol. II p. 309 (1916) (sectionsynstylae). A very strong climbing rose with stems to 10m or more, with many sharp, hooked thorns. Leaflets 5-9, usually 7, to broadly lanceolate or oblong, with a tapering point, 7-12cm long, rounded or cordate at the base, unstalked, with short, gland-tipped spines rather than teeth, rugose, dark green and dull with impressed veins above, silvery-green or purplish and finely hairy particularly on the veins beneath; rhachis with numerous sharp, recurved thorns. Stipules to 3cm long, 5mm wide, smooth or with a few glands, often reddish. Flowers 3-8 in an umbel or in compound umbels to 30cm across on strong shoots, creamy-white, 2-3cm across, scented of attar; petals silky-hairy outside. Pedicels downy, c. 1.5cm long, with few short glands; bracts soon falling. Sepals 1cm long, velvety hairy on both sides. Styles united, exserted from the hip. Hips orange-red, velvety hairy with scattered short-stalked glands, ovate, with spreading and finally deciduous sepals. In southwestern Sichuan, near Kanding, Baoxing and Wa-shan; in hedges and scrub at 1300-2300m, flowering late, in June. This very rampant rose is common in some areas and is easily recognised by its large leaves with smooth, red stipules, broad heads of small flowers and late flowering, in July in gardens in southern England. The underside of the leaves is grey or purplish, and the veins beneath and pedicles are velevty hairy. When in flower, the scent covers large areas. This rose should only be planted where it can spread without swamping anything precious, and is difficult and painful to prune or remove.

The hips are as conspicuous as the flowers and last well into the winter. The species was introduced recently by Mikinori Ogisu under the number 92388.