Rosa tomurensis

Description: — Shrubs, erect, 2.5 – 3 m tall, basal branching. Branchlets slender, brownish red; branchial spines are rare, scattered, rarely opposite, pale yellow and white, unequal in length, slender, broad at base, apex slightly downward curved. Leaflets 5 – 9, usually 7, elliptic, obovoid, ovoid or oblong, 0.6 – 2 × 0.5 – 1 cm, abaxially sparsely pilose, adaxially smooth; leaf margin simple serrate, often entire subbase one-third. Stipules usually wider, base mostly adnate to petiole, free portion ovate, triangulate, margin glandular spot. Flowers often solitary, sometimes 2 – 3 in corymbose cymes, (3) 3.5 – 6.5 (7) cm in diam; pedicel 1.5 – 3.5 cm, pedicel and calyx tube glabrous or tomentose and sparsely glandular hairs; bracts ovate, margin glandular teeth, abaxially with distinct midrib and lateral veins; sepals long lanceolate, margin entire, apex elongated widened into appendages, abaxially glandular and densely tomentose, adaxially densely pubescent, margin more densely; petals white, sparse pink, or pale pink, at bud stage, petal tips are often pink or pale pink. Hip subglobose or ovoid, red, shiny, 1 – 2.1 cm in diam, 1.5 – 2 cm long, sepals persistent and spreading; fruit pedicel straight or bent.

Conservation status: — Based on currently available data, the species should be assigned to the ‘ Data Deficient’ (DD) category of IUCN (2022). There is little human interference in this species’ distribution areas, so these populations are not easy to be destroyed.