Raphiocarpus petelotii (Pellegr.) B.L.Burtt

Nguyen, Cuong Huu, Wen, Fang, Pham, Toai Minh, Nguyen, Yen Thi, Bui, Thanh Minh, Bui, Doi The, Nguyen, Khang Sinh & Averyanov, Leonid V., 2023, The checklist of Raphiocarpus species (Gesneriaceae, Didymocarpinae) in the flora of Vietnam with the description of a new species, R. bicallosus, Phytotaxa 616 (3), pp. 223-234 : 232

12. Raphiocarpus petelotii (Pellegr.) B.L.Burtt in Weber & Burtt (1998: 174), Nguyen & Wen (2018: 1424), Vu (2018: 54)

≡ Didissandra petelotii Pellegrin (1930: 511) , Ho (2000: 17), Phuong (2005: 241).

Type: — VIETNAM. Lao Cai: Chapa , 1600 m, July 1927, P.A.Pételot 5039 (holotype P03511307 photo!, isotypes P00602496 photo!) .

Distribution:—The species is endemic to Vietnam found in (Lao Cai and Ha Giang provinces, and also in Cao Bang Province (fide Vu 2018).

Ecology and phenology:—It grows in humid evergreen broad-leaved submontane and montane forests on granite at elevations of 700–1800 m a.s.l. Flowers in February, June–September.

Conservation status:—The species is found in Cao Bang, Ha Giang, and Lao Cai provinces of northern Vietnam, with a total area of about 21 000 km 2. The species is surely strongly habitat-dependent. It lives in submontane and montane forests, which are today significantly impacted by deforestation. Despite the relatively large area of its distribution, the species should be tentatively assessed as Near Threatened according to IUCN (2023) criteria.

Additional specimens examined:— VIETNAM. Lao Cai: Sa Pa District., San Sa Ho Municipality, Hoang Lien National Park , Tram Ton Area , 1800 m, 22°20’55’’N 103°47’00’’E, 16–19 June 2009, M. S . Nuraliev NUR 128d ( LE); sine loc., 25 October 2022, N. V . Du et al. VN-US37 ( HN, LE);: Van Ban District, Nam Xe Municipality, Nam Xi Tan Village , between Nam Xe and Khau Co Pass, 700–1113 m, 26 February 2001, D. K . Harder et al. DKH 6936 ( HN, MO) ; Ha Giang: Vi Xuyen District, Cao Bo Municipality, Tam Ve Village , 1250–1310 m, 9 September 2000, D. K . Harder et al. DKH 5371 ( HN, MO) .