taxonID	type	description	language	source
017587C0FFA7940BFF65FA0BFD315B18.taxon	materials_examined	Type: — CHINA. Xizang Autonomous Region, Nyingchi City, Motuo County, 3,790 m, 31 Aug 2024, Xiaohua Jin et al. 60077 (holotype: PE!, isotypes: PE!).	en	Yan, Sen, Pandey, Tirtha Raj, Wen, Haixia, Wang, Xilong, Song, Xiqiang, Jin, Xiaohua (2025): Platanthera xizangensis (Orchidaceae, Orchideae), a new species from Southeast Xizang, China. Phytotaxa 693 (4): 287-296, DOI: 10.11646/phytotaxa.693.4.4, URL: https://doi.org/10.11646/phytotaxa.693.4.4
017587C0FFA7940BFF65FA0BFD315B18.taxon	diagnosis	Diagnosis: Platanthera xizangensis is morphologically close to P. milinensis by sharing partially open, spurless, greenish flowers, however, differs from it in having lip with lateral lobes basal, lip apex fleshy, and obtuse, subsecund lax inflorescence, and two subopposite, lanceolate leaves.	en	Yan, Sen, Pandey, Tirtha Raj, Wen, Haixia, Wang, Xilong, Song, Xiqiang, Jin, Xiaohua (2025): Platanthera xizangensis (Orchidaceae, Orchideae), a new species from Southeast Xizang, China. Phytotaxa 693 (4): 287-296, DOI: 10.11646/phytotaxa.693.4.4, URL: https://doi.org/10.11646/phytotaxa.693.4.4
017587C0FFA7940BFF65FA0BFD315B18.taxon	description	Description: Terrestrial herbs, 7 – 12 cm tall. Rootstocks oblong-fusiform, stoloniferous, ca. 1 cm long, new shoot arising from the apex of new tuberoid, densely covered with root hairs throughout their length. Stem erect, with one or two basal sheaths. Leaves two, subopposite; blades lanceolate, midvein depressed, 1.5 – 2.0 cm long, 0.5 – 0.75 cm wide, margin entire or slightly wavy, apex acute to subacute. Inflorescence subsecund raceme, with one or two foliaceous sterile bract, lanceolate, apex subacute; rachis 3 – 5 cm long, subdensely 8 – 10 - flowered; floral bracts lanceolate with sub-obtuse apex. Flowers yellowish-green, partially opened, resupinate, 4 – 5 mm across; ovary obovate-elliptic with curved tip, 3 – 4 mm long. Sepals and petals connivant forming a hood; sepals sub-equal, externally glandular, ca. 3 mm long, ca. 1 mm broad, concave, apex obtuse; dorsal sepal ovate-elliptic, dorsally with a median ridge; lateral sepals oblique, oblong-elliptic with tapering apex, margins often crenulate; petals smaller than sepals, whitish green, ovate-elliptic, ca. 2 mm long, ca. 1 mm broad. Lip triangular ovate, base concave with 3 conspicuous calli, 3 - lobed, lateral lobes basal, erect, ca. 0.5 mm long, margin incurved with rounded apex, mid lobe ligulate, ca. 3 mm long, apex fleshy, obtuse, spur absent. Column erect, 1 – 1.5 mm long, anther locules parallel, pollinarium ovate, ca. 0.5 mm long; auricles prominent, whitish; rostellum slightly triangular, stigma transverse, lateral lobes not protruding and indistinct.	en	Yan, Sen, Pandey, Tirtha Raj, Wen, Haixia, Wang, Xilong, Song, Xiqiang, Jin, Xiaohua (2025): Platanthera xizangensis (Orchidaceae, Orchideae), a new species from Southeast Xizang, China. Phytotaxa 693 (4): 287-296, DOI: 10.11646/phytotaxa.693.4.4, URL: https://doi.org/10.11646/phytotaxa.693.4.4
017587C0FFA7940BFF65FA0BFD315B18.taxon	etymology	Etymology: The epithet refers to Xizang Autonomous Region (China), the location where types were collected.	en	Yan, Sen, Pandey, Tirtha Raj, Wen, Haixia, Wang, Xilong, Song, Xiqiang, Jin, Xiaohua (2025): Platanthera xizangensis (Orchidaceae, Orchideae), a new species from Southeast Xizang, China. Phytotaxa 693 (4): 287-296, DOI: 10.11646/phytotaxa.693.4.4, URL: https://doi.org/10.11646/phytotaxa.693.4.4
017587C0FFA7940BFF65FA0BFD315B18.taxon	distribution	Distribution and habitat: Platanthera xizangensis was found in the humid alpine meadows, at elevation of ca. 3,790 m.	en	Yan, Sen, Pandey, Tirtha Raj, Wen, Haixia, Wang, Xilong, Song, Xiqiang, Jin, Xiaohua (2025): Platanthera xizangensis (Orchidaceae, Orchideae), a new species from Southeast Xizang, China. Phytotaxa 693 (4): 287-296, DOI: 10.11646/phytotaxa.693.4.4, URL: https://doi.org/10.11646/phytotaxa.693.4.4
017587C0FFA7940BFF65FA0BFD315B18.taxon	biology_ecology	Phenology: Flowering in July – September.	en	Yan, Sen, Pandey, Tirtha Raj, Wen, Haixia, Wang, Xilong, Song, Xiqiang, Jin, Xiaohua (2025): Platanthera xizangensis (Orchidaceae, Orchideae), a new species from Southeast Xizang, China. Phytotaxa 693 (4): 287-296, DOI: 10.11646/phytotaxa.693.4.4, URL: https://doi.org/10.11646/phytotaxa.693.4.4
