taxonID	type	description	language	source
963A87A4D9623662089AFE68FD02FE4A.taxon	type_taxon	Type: Bulbophyllum umbellatum Lindley (1830: 56)	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9623667089AFE3FFD83FF54.taxon	materials_examined	Type: — VIETNAM, Lam Dong Province, Langbiang, 16 April 1984, Leonid Averyanov LX-VN 1663 (holotype LE 01057657 http: // en. herbariumle. ru /? t = occ & id = 7835, photos LE 01087248 http: // en. herbariumle. ru /? t = occ & id = 18963). Paratypes: — VIETNAM, Lam Dong Province, Lac Duong District, forest around Khanh Le Pass, 6 April 2020, Truong Ba Vuong, Truong Quang Tam, Dang Van Son, Ngo Quang Dang, Hoang Manh Dat, BV 576 (VNM 00032284). VIETNAM, Lam Dong Province, Lac Duong District, forest around Khanh Le Pass, 5 May 2020, Truong Ba Vuong, Truong Quang Tam, Dang Van Son, Ngo Quang Dang, BV 647 (VNM 00032285).	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9623667089AFE3FFD83FF54.taxon	etymology	Etymology: — The plant name honors Mr. Hoang Manh Dat who found the specimens and provided them for investigation.	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9623667089AFE3FFD83FF54.taxon	description	Description: — Miniature twig epiphyte. Pseudobulbs globular to broadly ovoid, erect, 1 – 1.5 cm tall, connected by woody, stout rhizome, 1 – 1.5 mm in diameter, 3 mm apart. Leaves shortly petiolate; petiole 1 – 2 mm long; leaf blade oblong, 3 – 3.7 cm long, 1 – 1.2 cm wide, adaxially green, light green on abaxial surface, apex rounded, retuse. Inflorescence arising from the base of pseudobulb, slender, umbellate, with 4 – 6 flowers opening simultaneously; peduncle 2 – 2.2 cm long, slightly curved, covered by 3 – 4 dark brownish to almost black tubular overlapping sheaths at base and 1 – 2 pale brown tubular bract above; rachis erect 2.5 – 2.7 cm long; floral bracts ca. 2.5 mm long, slightly curved, acute; pedicel and ovary 6 – 7 mm long, pedicel slender, curved. Flowers uniformly yellow, lip occasionally somewhat purplish at base. Dorsal sepal ca. 4 mm long, 1 mm wide, concave, somewhat attenuate, directed forward, cucullate, truncate to slightly retuse; lateral sepals ovate-narrowly ovate, broadening at the base, ca. 10 mm long, 1.5 – 2 mm wide (at base), apical part attenuate, twisted at the base, connate along upper margin, lower margin free at base, and connate in apical portion, forming acute tube. Petals broadly ovate, slightly oblique, 3 – 3.3 mm long, 2 mm wide, apex rounded. Lip simple, ca. 2 mm long, 1 mm wide at base, movably attached to column foot by short white ribbon-like appendage, slightly curved, margin upright erected, apex mucronate, adaxial surface smooth, without keels. Column erect, ca. 1 mm tall, oblique; column foot up-curved, ca. 1.5 mm long; stelidia ca. 0.5 mm long, erect, slightly incurved, upper margin with small teeth; lower margin with inconspicuous wings; stigma rectangular; rostellum insignificant; anther cap helmet-shaped, yellow, brown and finely warty at apex; pollinia 4, half-obovate, in two pairs. Fruits not seen.	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9623667089AFE3FFD83FF54.taxon	biology_ecology	Habitat and phenology: — Clustering branch epiphyte in primary broad-leaved forest at elevations 1500 – 2000 m a. s. l. Flowers in April – May.	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9623667089AFE3FFD83FF54.taxon	distribution	Distribution: — Vietnam (Lam Dong Province). Endemic.	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9623667089AFE3FFD83FF54.taxon	materials_examined	Additional specimens studied: — MYANMAR, Mon State: Mawlamyine District, 1860, Parish 220 (K 000829092, K 000829181, photo!) as B. pumilio.	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9623667089AFE3FFD83FF54.taxon	discussion	Notes: — The newly described species looks superficially close to B. pumilio but differs in a series of morphological characters presented in the Table. The information of B. pum ilio is based on Parish & Reichenbach (1874: 153), Hooker (1890: 778, as Cirrhopetalum pumilio) and Seidenfaden (1979).	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9673667089AFEE2FAA4FD39.taxon	materials_examined	Type: LAOS, mountain range north of Vientiane, Ritaville, 750 m, 12 Jan. 1969, A. D. Kerr 2826 (holotype C). (Figure 2)	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9673667089AFEE2FAA4FD39.taxon	biology_ecology	Habitat and phenology: — Lowland and submontane forests at elevations 750 – 1550 m a. s. l. Flowers in June and January – March (Hu et al. 2017, Pingyot et al. 2019).	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9673667089AFEE2FAA4FD39.taxon	distribution	Distribution. — Vietnam (Son La Province, Thuan Chau District), Thailand (Phitsanulok Province, Chattrakan District), S China (Yunnan Province), central Laos (Khammouane Province).	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
963A87A4D9673667089AFEE2FAA4FD39.taxon	materials_examined	Specimen examined: — VIETNAM, voucher herbarium specimen and photos prepared in 11 June 2021 by Truong Ba Vuong, Phan Trong Quyet, Ngo Quang Dang BV 1184 (VNM 00069900) from plant cultivated in private garden in Da Lat Town, Lam Dong Province, originated from Son La Province, Thuan Chau District, Pha Din Pass.	en	Pham, Phuoc Dien, Averyanov, Leonid V., Dang, Van Son, Nguyen, Dinh Hiep, Maisak, Tatiana, Truong, Quang Tam, Dang, Minh Quan, Truong, Ba Vuong (2021): A new species and new record of Bulbophyllum (Orchidaceae) from Vietnam. Phytotaxa 522 (1): 68-72, DOI: 10.11646/phytotaxa.522.1.8, URL: http://dx.doi.org/10.11646/phytotaxa.522.1.8
