Raphiocarpus evrardii (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 : 231

9. Raphiocarpus evrardii (Pellegr.) B.L.Burtt in Weber & Burtt (1998: 173), Nguyen & Wen (2018: 1424), Vu (2018: 53)

≡ Didissandra evrardii Pellegrin (1930: 510) , Ho (2000: 17), Phuong (2005: 241).

Lectotypeype (designated here): — VIETNAM. Lam Dong: sentier de la montagne de l’elephant sur la vallée du ruisseau de Prenn, 27 August 1924, F.Evrard 1216 ( P00634327 photo! isolectotypes P00602494 photo!, P00602495 photo !).

Distribution:—The species is endemic to Vietnam known from Lam Dong and Gia Lai provinces, and also in Thua Thien Hue Province (fide Vu 2028).

Ecology and phenology:—It grows in evergreen broad-leaved and mixed montane forests on granite and shale at elevations 1400–2200 m a.s.l. Flowers in February–March and August–September.

Conservation status:—The species has a rather wide distribution in mountainous regions of southern Vietnam, with a total occupancy area of about 30 000 km 2. Due to the many known populations in relatively well protected montane locations, the conservation status of this species may be provisionally estimated as Least Concerns following the criteria of the IUCN (2023).

Note:— Among three specimens designated by F. Pellegrin as types, we chose as an lectotype one ( P00634327 ) that was designated on the herbarium sheet as the type by B. L. Burtt in 2007 .

Additional specimens examined:— VIETNAM. Lam Dong: N. de Dankia, 1500 m, 2 September 1940 , M.Poilane 30276 ( P photo); Nord de Dalat , 1500 m, 13 September 1940 , M.Poilane 30381 ( P photo); Pics du Lang Biang, 2100 m, 6 October 1940 , M.Poilane 30652 ( P photo); Dalat, Mt. Lang Biang , 2000 m, 27 September 1952 , M.Schmid 7202 ( P photo); Dalat, 1500 m, February 1954 , M. Schmid s.n. ( P photo); Lac Duong District, Da Chay Municipality, main peak of Bi Dup Mountains , 2260 m, N12°05’ E108°40’, 21 March 1997 , L. Averyanov et al. VH 2998 ( HN, LE, P); Lac Duong District , Da Chay Municipality, in 56 km to NNW from main Bi Dup Peak, 1800–1900 m, N12°07’ E108°41’, 29 March 1997, L.Averyanov et al. VH 3375 (HN, LE) .