2. Campanula rotata D. Y. Hong, sp. nov. Figure 2.

Type:— CHINA. Tibet, Gongbo’gyamda, Bahe Township, 29°59 ′ N, 93°41 ′ E, 3350 m, meadows by forests, 23 September 2012, FLPH Tibet Exped. 12–2125 (holotype PE 2381835, isotype PE 2397589).

Roots unknown. Stems prostrate below, prostrate part up to 40 cm long, with sparse and scaly-like or filiform leaves; middle and upper parts ascending or diffuse, branched or simple, glabrous but sparsely hispidulous along thin ribs. Leaves alternate, sessile, narrow-elliptic to linear, 4–9 cm long, 0.3–0.7 cm wide, both surfaces glabrous, base narrowcuneate, apex acuminate, margin entire or sparsely serrate; upper leaves smaller. Flowers solitary, terminal on both main stem and branches, pendulous, pedicel 2.5–6 cm long. Calyx tube obconical, glabrous, 5-ribbed; calyx lobes subulate, 8–10 mm long, ca. 1.5 mm wide, widest at base, glabrous, with 1 pair of verrucose-denticules at near base. Corolla pale purple, glabrous, nearly rotate, cleft to near base: corolla tube ca. 2 mm long; corolla lobes ovate-lanceolate, 11 mm long. Filaments ca. 2.5 mm long, dilated below, dilated part ovate, ciliate; anthers ca. 5 mm long, connivent into a tube arrounding style. Style much longer than corolla; stigma lobes filiform. Fruit immature.

Notes:—This new species is characteristic of its corolla rotate, anthers connivent arounding the style during the whole anthesis, flowers solitary, and leaves narrow-elliptic to linear. Therefore, it differs distinctly from the most similar species Campanula chinensis Hong (1980: 247) .