Campanula rotata D. Y. Hong, 2015

2. Campanula rotata D. Y. Hong View in CoL , sp. nov. Figure 2 View 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) .