taxonID	type	description	language	source
30AC946F6AC75E7E90A0077F1AD0670F.taxon	description	Figs 2 D, E, 3	en	Zhu, Da-Lin, Zhang, Jun-Yi, Zhang, Yue, Liao, Min, He, Hai, Chen, Ke, Xu, Bo (2025): Gastrochilus jiuzhaigouensis (Orchidaceae, Epidendroideae), a new epiphytic orchid from Jiuzhaigou World Heritage Site, China. PhytoKeys 265: 25-38, DOI: 10.3897/phytokeys.265.159138
30AC946F6AC75E7E90A0077F1AD0670F.taxon	diagnosis	Diagnosis. It is most similar to G. bernhardtianus, but it can be distinguished by its shorter stem (0.5 – 1.2 vs. ca. 5.0 cm), obliquely linear-lanceolate leaves (vs. oblong-lanceolate leaves), reniform and revolute epichile (vs. transversely oblong and spread) without ornamentation (vs. two conic calli near its base), and absence of middle ridge (vs. distinctly ridged) at the middle of central callus on the epichile.	en	Zhu, Da-Lin, Zhang, Jun-Yi, Zhang, Yue, Liao, Min, He, Hai, Chen, Ke, Xu, Bo (2025): Gastrochilus jiuzhaigouensis (Orchidaceae, Epidendroideae), a new epiphytic orchid from Jiuzhaigou World Heritage Site, China. PhytoKeys 265: 25-38, DOI: 10.3897/phytokeys.265.159138
30AC946F6AC75E7E90A0077F1AD0670F.taxon	description	Description. Miniature branch epiphyte, pendent, 2.0 – 4.0 cm tall. Roots vermiform, 3.0 – 5.0 cm long, ca. 1.2 mm in diameter. Stem unbranched, 0.5 – 1.2 cm long, ca. 1.2 mm in diameter. Leaves thickly leathery (with fleshy mesophyll), tinged with purplish-red spots, closely arranged, distichous, alternate; blade obliquely linear-lanceolate, 1.2 – 2.4 × 0.3 – 0.6 cm, base slightly asymmetry, apex acute and ended with one lobule, lobes setaceous. Inflorescence a 1 - or 2 - flowered on a short rachis; peduncle curved upward and thickened, 3.0 – 6.0 mm long, proximally covered with one sheath; floral bracts ovate-lanceolate, 0.6 – 1.0 mm long, apex acute; pedicel and ovary connate, 0.8 – 1.1 cm long. Flowers spreading, ca. 0.8 × 1.2 cm; sepals and petals yellow-green on both sides; dorsal sepals elliptic, 4.8 – 6.0 × 3.6 – 4.2 mm, apex obtuse; lateral sepals oblong, 5.0 – 6.8 × 3.0 – 4.0 mm, apex obtuse; petals obovate, 4.0 – 5.8 × 3.0 – 4.0 mm, apex obtuse, base narrowed; lip with a reniform epichile, revolute, purplish-red, 8.0 – 10.0 × 4.2 – 5.5 mm, margin entire, smooth and glabrous above, centra thickened purple-yellow without ornamentation; hypochile sub-hemispherical, yellowish-green, 4.0 – 5.0 × 3.8 – 5.4 mm, dorsally compressed, obtuse-rounded at the apex; column cylindrical, ca. 1.0 mm; anther cap galeate with two chambers, ca. 0.8 × 0.5 mm; rostellum bilobed; pollinarium ca. 0.3 mm long; pollinia 2, ca. 0.3 × 0.2 mm, yellow, subglobular, porate; stigma deeply sunken, inverted V-shaped, ca. 0.5 mm long, white; rostellum bilobed. Fruits not mature.	en	Zhu, Da-Lin, Zhang, Jun-Yi, Zhang, Yue, Liao, Min, He, Hai, Chen, Ke, Xu, Bo (2025): Gastrochilus jiuzhaigouensis (Orchidaceae, Epidendroideae), a new epiphytic orchid from Jiuzhaigou World Heritage Site, China. PhytoKeys 265: 25-38, DOI: 10.3897/phytokeys.265.159138
30AC946F6AC75E7E90A0077F1AD0670F.taxon	distribution	Distribution and habitat. Gastrochilus jiuzhaigouensis is currently known only from Wuhuahai, Jiuzhaigou County, Sichuan Province, Southwest China (Fig. 4). It is epiphytic on dieback tree branches on the bank of a lake of trees in the border of subalpine mixed coniferous and deciduous broadleaf forest dominated by Pinus tabuliformis Carrièreat at elevational range between 2400 and 2500 m. Other common accompanying broadleaf trees include Acer stachyophyllum subsp. betulifolium (Maxim.) P. C. De Jong, Fraxinus chinensis Roxb., Prunus tomentosa Thunb., and Quercus mongolica Fisch. ex Ledeb., among others. And in shrub layer Berberis amurensis Rupr. can reach a height of two to three meters.	en	Zhu, Da-Lin, Zhang, Jun-Yi, Zhang, Yue, Liao, Min, He, Hai, Chen, Ke, Xu, Bo (2025): Gastrochilus jiuzhaigouensis (Orchidaceae, Epidendroideae), a new epiphytic orchid from Jiuzhaigou World Heritage Site, China. PhytoKeys 265: 25-38, DOI: 10.3897/phytokeys.265.159138
30AC946F6AC75E7E90A0077F1AD0670F.taxon	etymology	Etymology. Its specific epithet is taken from name of Jiuzhaigou World Heritage Site, where the type specimen of this new orchid is located. Jiuzhaigou is also the name of the famous Jiuzhaigou National Park and the county name in Northwest Sichuan. It is therefore the Chinese name that is proposed as jiu zhai gou peng ju lan (九寨沟盆距兰).	en	Zhu, Da-Lin, Zhang, Jun-Yi, Zhang, Yue, Liao, Min, He, Hai, Chen, Ke, Xu, Bo (2025): Gastrochilus jiuzhaigouensis (Orchidaceae, Epidendroideae), a new epiphytic orchid from Jiuzhaigou World Heritage Site, China. PhytoKeys 265: 25-38, DOI: 10.3897/phytokeys.265.159138
