7. Begonia wenshanensis C.M.Hu ex C.Y.Wu & T.C.Ku (1995: 262, Fig. 10) (Fig. 7)

Ku (1999: 168), Shui et al. (2002: 325, 2019b: 220), Huang & Shui (2006: 163), Gu et al. (2007: 203, Fig. 225 5–9), Shui & Chen (2017: 98), Dong & Liu (2019: 37).

B. sect. Platycentrum (Klotzsch 1855: 243) de Candolle (1859: 134).

TYPE:— CHINA. Yunnan Province: Wenshan mt., in mixed forests, 2000 m, 17 August 1947, Feng K. M. 11323 (holotype PE; isotypes E: E00022104 photo!, KUN) .

Ecology and phenology:— Evergreen broad-leaved forests, moist environments along streams, mountain bamboo thickets, at 1000–2200 m a.s.l. Flowering in June–October, fruiting from August.

Distribution: — China: Yunnan Province (Funing, Wenshan); northern Vietnam: Cao Bang Province (Phia Oac- Phia Den National Park) and Lao Cai Province (Bat Xat Nature Reserve).

Note:— The species is reported here from Vietnam for the first time.

Specimens examined:— VIETNAM. Lao Cai Province: Bat Xat District, Bat Xat Nature Reserve, 4 km SSE of Y Ty village, disturbed forest, 22°36’46’’N 103°37’22’’E, elev. 1980 m, 13 June 2019, Nuraliev M. S. 2726 (E, MW: MW0757094, MW0757095; photos LE: LE01093024 http://en.herbariumle.ru/?t=occ&id=43979) ; Cao Bang Province: Nguyen Binh District, Phia Oac-Phia Den National Park, 11 km WSW of Nguyen Binh town, Phia Oac summit area, wet foggy mossy crooked forest with bamboo on slope, 22°36’58’’N 105°51’49’’E, elev. 1900 m, 03 October 2018, Nuraliev M. S. 2235 (E, MW: MW0757093; photos LE: LE01093023 http://en.herbariumle.ru/?t=occ&id=43978) .