Bulbophyllum kanburiense, Seidenfaden (1970: 344)

Nguyen, Van Canh, Averyanov, Leonid V., Maisak, Tatiana V., Nguyen, Thi Lien Thuong, Nguyen, Van Khuong, Pham, Thi Thanh Dat, Nguyen, Danh Duc, Dang, Van Son, Aromyen, Warapong & Truong, Ba Vuong, 2023, The review of Bulbophyllum section Tripudianthes (Orchidaceae) in the flora of Vietnam with the description of new species, B. viridipallidum, Phytotaxa 598 (1), pp. 59-68 : 67

publication ID	https://doi.org/ 10.11646/phytotaxa.598.1.4
DOI	https://doi.org/10.5281/zenodo.7962660
persistent identifier	https://treatment.plazi.org/id/03B987E5-112D-FFFD-74BC-FC24FAE09C5C
treatment provided by	Plazi
scientific name	Bulbophyllum kanburiense
status

Treatment

5. B. kanburiense Seidenfaden (1970: 344) View in CoL View at ENA , Seidenfaden (1979: 190), Ormerod et al. (2021: 36).

Type: — THAILAND, Thawng Phaphum, Kanburi, Seidenfaden & Smitinand, GT 4259 ( C) .

≡ Tripudianthes kanburiensis (Seidenfaden) Szlachetko & Kras (2007: 95) View in CoL .

Habitat and phenology: —Epiphyte on tall trees in primary evergreen broad-leaved forests.

Distribution: — Myanmar, Thailand, Vietnam (?)

Proposed conservation status:—According to currently available data, the occurrence of B. kanburiense in Vietnam is unclear. More field studies are required to confirm the distribution of this species in Vietnam. In view of lack of current data and in accordance with IUCN criteria ( IUCN, 2022), the species is assessed nationally as Data Deficient (DD). The conservation status of this species outside Vietnam has not been evaluated yet.

Studied specimens:— MYANMAR, 1932, Dickason 5770, (A02386360 photo!,AMES45519photo!). VIETNAM, Lam Dong, 1982, Averyanov, LX-VN 973 (photos LE01055686!, LE01055687!).

Note:—This species is similar to B. refractum , from which it differs by having a smaller median sepal, less than 5.5 mm long (vs. median sepal longer than 8 mm), shorter lateral sepals 2.5 cm (vs. longer than 3 cm), and acuminate petals (vs. petals acute). Two collections housed in LE Herbarium: LE01055686 and LE01055687 identified as B. kanburiense show entire dorsal sepal and subulate petals typical for B. refractum according to Seidenfaden (1992: 261). However, these specimens have lateral sepals 3.5–4 cm long (vs. median sepal of B. kanburiense according to protologue is about 2.5 cm long), hence the identification of mentioned collection remains somewhat doubtful. We have not seen any more collections from Vietnam, which can confirm the occurrence of B. refractum in Vietnam.