taxonID	type	description	language	source
03B987E51124FFF474BCFC3AFA319FC3.taxon	materials_examined	Type: — B. tripudians Parish & Reichenbach (1875: 154).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51124FFF774BCF988FCF39B20.taxon	biology_ecology	Habitat and phenology: — Epiphyte on tall trees in broad-leaved evergreen forest. Flowering observed in February – March.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51124FFF774BCF988FCF39B20.taxon	distribution	Distribution: — Myanmar, Thailand, Laos, Vietnam (?).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51124FFF774BCF988FCF39B20.taxon	conservation	Proposed conservation status: — According to currently available data, B. tripudians is a very rare species recorded from a single collection made by Poilane in 1933. More field studies are necessary for the identification of its conservation status. In view of lack of current data and in accordance with IUCN criteria (IUCN, 2022), the species should be assessed as Data Deficient (DD).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51124FFF774BCF988FCF39B20.taxon	discussion	Note: — The occurrence of this species in Vietnam is based on a single collection by Poilane (P 00362016) made in Lam Dong Province, in Bao Loc District. However, specimens on the herbarium sheet (especially on the rightside) show a large dorsal sepal do not attenuate at apex that is typical for B. refractum, hence the identification on our opinion may be doubtful. Studied specimens: — VIETNAM, Lam Dong Province, “ Annam: un peu au sud de la station agricole de Blao, prov. du Haut Donaï ”, 1933, Poilane, 22157 (P 00362016 photo!).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF774BCFEC0FEE89F10.taxon	description	(Fig. 1).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF774BCFEC0FEE89F10.taxon	materials_examined	Type: — NEPAL. 1832, Wall. Cat. n. 1980 (K 000894326 photo!).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF774BCFEC0FEE89F10.taxon	biology_ecology	Habitat and phenology: — Epiphyte on tall trees in evergreen broad-leaved forest.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF774BCFEC0FEE89F10.taxon	distribution	Distribution: — Vietnam (Lam Dong Province), Nepal, NE India, Myanmar, China, Thailand, Laos.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF774BCFEC0FEE89F10.taxon	conservation	Proposed conservation status: — According to currently available data, B. wallichii is found only in one location as a clustering epiphyte on tall tree in primary broad-leaved forest in Lam Dong Province. There is no direct threat to this habitat. Hence the species can be assessed in Vietnam as Vulnerable based on small AOO, VU D 2. Meanwhile, there is insufficient data for global distribution area of this specie where its conservation status should be identified as Data Deficient (DD).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF774BCFEC0FEE89F10.taxon	discussion	Note: — Seidenfaden (1970: 342) considered the collection, Tixier 15 (P 00348218) as Bulbophyllum refractoides, which is currently accepted as a synonym of B. wallichii. However, the line drawing of Tixier on the herbarium sheet clearly shows the dorsal sepal with stiff hairs on inner surface and on the margin (not fimbriate as in B. wallichii). We suspect the identification of this specimen may be incorrect. Meanwhile, additional specimens of the true B. wallichii were recently collected in Vietnam, in Lam Dong Province. These collections are presently confirmed by the voucher specimens (BV 1483, 1484) stored at LE (LE 01169312! & LE 01169312!) and VNM (VNM 00043086!) Herbaria.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF774BCFEC0FEE89F10.taxon	materials_examined	At the same time, the specimen from NE India collected by Hooker and Thomson (P 00362039) seem different from the type in a longer dorsal sepal with acuminate (not caudate) apex, and may represent separate variety or even species; which require detailed study. Studied specimens: — VIETNAM, Lam Dong Province, 14 December 2021, Truong Ba Vuong & Nguyen Phi Tam, BV 1483 (photos LE 01123508!, LE 01169312), BV 1484 (VNM 00043086!). INDIA, Sikkim, Donné par M. M. J-D. Hooker et Thomson 1859 s. n. (P 00362039 photo!). INDIA, Sikkim Himalaya, December 1892, Pantling 24 (P 00362038 photo!).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF274BCFAD0FE4E9CA8.taxon	description	(Fig. 2).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF274BCFAD0FE4E9CA8.taxon	materials_examined	Type: — VIETNAM. Kon Tum Province, Dak Ha District, Dak Psi Commune, Dak Trua Forest, epiphyte on tall trees, 16 February 2023, Truong Ba Vuong, BV 1688 (holotype VNM 00043087!).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF274BCFAD0FE4E9CA8.taxon	etymology	Etymology: — the specific epithet refers to the pale greenish yellow lateral sepals, a character common with related species.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF274BCFAD0FE4E9CA8.taxon	description	Description: — Herb perennial, epiphytic. Pseudobulbs densely clustering, ovoid to broadly ovoid, sometime slightly compress, 7 – 16 mm long, 5 – 17 mm in diameter, 2 - leaved. Leaves deciduous, plant leafless at anthesis. Inflorescence from base of pseudobulbs; peduncle greenish-yellow, 39 – 40 cm long, at base with 2 scarious, brownish overlapping tubular bracts, above with 2 similar bracts; rachis pendulous, 3.5 – 4 cm long, bearing 6 simultaneously opening flowers; floral bract triangular, brown 1.7 – 2 mm long, acute; pedicel and ovary 2.5 – 3 mm long, pedicel terete shorter than conoid ovary. Flowers odorless, lateral sepals pale greenish yellow; median sepal and petals pale reddish brown, lip white speckled with pink or pink purple, callus yellow, with many pink dots at apex dark purple. Median sepal ovate to broadly ovate, ca. 5.5 mm long, ca. 3 mm wide, acuminate to attenuate, adaxially in middle with 2 prominent keels, in apical half sparsely hairy with stiff hairs. Lateral sepals obliquely oblong lanceolate, ca. 4 cm long, ca. 0.3 cm wide, acute, twisted at base, lower margin free at base, connate to the tip, adaxial surface sparsely hairy with short stiff hairs. Petals obliquely triangular, glabrous, 4 – 4.5 mm long, 1 – 1.5 mm wide, margin fimbriate, acuminate to attenuate. Lip simple, oblong in outline, 3 – 3.2 mm long, 1 – 1.5 mm wide, movably adnate to column foot by small ligament, apex rounded; margins in basal half erect, finely papillose, apical half fimbriate along the margin; adaxial surface at base with 2 rounded longitudinal calli fused distally into a single prominent central longitudinal keel inflated at the lip apex turn into prominent half-ovoid callus; abaxial sparely pillose. Column ca. 1.5 mm long, at front with inconspicuous rounded wings; column foot 2 – 2.5 cm long, forward directed, straight; stelidia subulate, ca. 1 mm long, slightly curved; stigma half circular, concave, ca. 1 mm across; rostelum non protruding; anther cap helmet shaped, ca. 1 mm long, apex with a gibbose densely papillose inflation; pollinia 4, bright yellow, half ovoid, inner smaller than outer. Fruits not seen.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF274BCFAD0FE4E9CA8.taxon	biology_ecology	Habitat and phenology: — Epiphyte on tall trees in evergreen broad-leaved forest. Flowering observed during February.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF274BCFAD0FE4E9CA8.taxon	distribution	Distribution: — VIETNAM (Kon Tum Province, Dak Ha District). Endemic. Proposed conservation status: — According to currently available data, the new species is very rare and found only from one location. More field studies are required for preparing its conservation assessment. In view of gaps in data and in accordance with IUCN criteria (IUCN, 2022), the species should be assessed as Data Deficient (DD).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51127FFF274BCFAD0FE4E9CA8.taxon	discussion	Notes: — The new species in its entire median sepal is similar B. kanburiense and B. khaoyaiense. It also similar with B. wallichii in two prominent calli placed on the lip base. The dorsal sepal and flower comparison is presented on Fig. 3. The morphological differences of the new species and morphologically similar species are presented in the table. Data of B. wallichii based on BV 1484 (VNM 00043086), BV 1483 (LE 01123508 & LE 01169312); data of B. kanburiense based on Seidenfaden (1970: 344); data of B. khaoyaiense based on Seidenfaden & Smitinand (1965: 795) and Seidenfaden (1970: 342).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51122FFFD74BCF948FD93998C.taxon	description	(Fig. 4).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51122FFFD74BCF948FD93998C.taxon	biology_ecology	Habitat and phenology: — Epiphyte on tall trees in primary evergreen broad-leaved forests. Flowering observed in December – February.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51122FFFD74BCF948FD93998C.taxon	distribution	Distribution: — Vietnam (Lam Dong, Gia Lai, Dak Nong, Binh Phuoc, Dien Bien provinces), Bhutan, India, Myanmar, Thailand, Java and Sumatra.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51122FFFD74BCF948FD93998C.taxon	conservation	Proposed conservation status: — According to currently available data, B. refractum seems quite common in Vietnam. Due to attractive nature of flowers, the species is widely collected for trade. Based on the national EOO 148,826.741 km 2 and AOO 28.000 km 2, and in accordance with IUCN criteria (IUCN, 2022), the species should be assessed in Vietnam as VU B 2 ab (v). The verifiable data for this species’ conservation status outside Vietnam is not available.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E51122FFFD74BCF948FD93998C.taxon	discussion	Note: — Common in Vietnam, with relatively large flowers having a large dorsal sepal. The species is sometime misidentified as B. kanburiense; the main differences is indicated under the note for B. kanburiense. The drawing of Pham Hoang Ho (1992: 844) named as B. refractum possibly based on specimens of Tixier 15 (P 00348218) having a very small dorsal sepal typical for B. wallichii. Studied specimens: — VIETNAM, Lam Dong Province, Annam: piste de Fyan, 1957, Tixier, 15 (P 00348218 photo!). VIETNAM, Gia Lai Province, 1987, Averyanov, LX-VN 2143 a / 190 a (photos LE 01057662!, LE 01087253!). VIETNAM, Binh Phuoc Province, 2005, Averyanov et al., HLF 4932 a (photos LE 01087116!). VIETNAM, Lam Dong Province, 2011, NPT 006 (photos LE 0105766!, LE 01070245!). VIETNAM, Lam Dong Province, 2018, Truong Ba Vuong, Ngo Quang Dang, BV 1035 (VNM 00043084!). VIETNAM, Gia Lai Province, Truong Ba Vuong, BV 1083 (VNM 00043085!). VIETNAM, Dak Nong Province, 2019, Averyanov, Nguyen Van Canh, T. Maisak, AL 1183.4 (photos LE 01067185!). VIETNAM, Dak Lak, 2019, Truong Ba Vuong, BV 532 (VNM 00043069!). VIETNAM, Lam Dong Province, 2021, Truong Ba Vuong, Ngo Quang Dang, BV 1046 (photos LE 01089814!, VNM 00043072!). VIETNAM, Dien Bien Province, 2023, Nguyen Sinh Khang, AL 2191 (photos LE 01123884!). INDONESIA, Java, 1844, Zollinger, 2261 (isotype P 00347107 photo!).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E5112DFFFD74BCFC24FAE09C5C.taxon	materials_examined	Type: — THAILAND, Thawng Phaphum, Kanburi, Seidenfaden & Smitinand, GT 4259 (C).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E5112DFFFD74BCFC24FAE09C5C.taxon	biology_ecology	Habitat and phenology: — Epiphyte on tall trees in primary evergreen broad-leaved forests.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E5112DFFFD74BCFC24FAE09C5C.taxon	distribution	Distribution: — Myanmar, Thailand, Vietnam (?)	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E5112DFFFD74BCFC24FAE09C5C.taxon	conservation	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.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E5112DFFFD74BCFC24FAE09C5C.taxon	materials_examined	Studied specimens: — MYANMAR, 1932, Dickason 5770, (A 02386360 photo!, AMES 45519 photo!). VIETNAM, Lam Dong, 1982, Averyanov, LX-VN 973 (photos LE 01055686!, LE 01055687!).	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
03B987E5112DFFFD74BCFC24FAE09C5C.taxon	discussion	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: LE 01055686 and LE 01055687 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.	en	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): 59-68, DOI: 10.11646/phytotaxa.598.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.598.1.4
