taxonID	type	description	language	source
13F088655F2F5BAA8F678B0AA45CAD56.taxon	description	Figs 2 A, B, 3	en	Zhang, Jun-Yi, Cheng, Yue-Hong, Liao, Min, Jin, Sen-Long, Lin, Hong-Qiang, Yang, Pan-Yan, He, Hai, Xu, Bo (2024): Gastrochilus balangshanensis (Orchidaceae, Aeridinae), a new subalpine epiphytic orchid from the Mountains of Southwest China. PhytoKeys 247: 123-135, DOI: 10.3897/phytokeys.247.130755
13F088655F2F5BAA8F678B0AA45CAD56.taxon	diagnosis	Diagnosis. Gastrochilus balangshanensis is most similar to G. affinis, but can be distinguished by its shorter stem (1.5 – 3.5 vs. 3.0 – 12.0 cm), nearly elliptic leaves (vs. oblong-lanceolate to subspathulate), larger sepals (5.6 – 6.4 × 4.8 – 5.2 vs. 3.0 – 5.0 × 1.0 – 1.3 mm) and petals (5.0 – 5.8 × 4.0 – 4.4 vs. 3.0 – 4.0 × 1.0 – 1.3 mm), reniform epichile (vs. subtriangular) and sub-hemispherical hypochile, obtuse-rounded at the apex (vs. hypochile obconical, subacute to obtuse and shortly bifid at apex).	en	Zhang, Jun-Yi, Cheng, Yue-Hong, Liao, Min, Jin, Sen-Long, Lin, Hong-Qiang, Yang, Pan-Yan, He, Hai, Xu, Bo (2024): Gastrochilus balangshanensis (Orchidaceae, Aeridinae), a new subalpine epiphytic orchid from the Mountains of Southwest China. PhytoKeys 247: 123-135, DOI: 10.3897/phytokeys.247.130755
13F088655F2F5BAA8F678B0AA45CAD56.taxon	description	Description. Epiphytic herb, monopodial, pendent, 1.5 – 3.5 cm tall. Roots vermiform, 4.0 – 6.0 cm long, ca. 1.6 mm in diameter. Stem unbranched, 0.5 – 2.5 cm long, ca. 1.5 mm in diameter. Leaves closely alternate, nearly elliptic, 0.9 – 1.5 × 0.4 – 0.8 cm, apex acute and with 1 – 2 lobules, lobes setaceous, with purplish-red spots. Inflorescence a raceme with 1 or 2 flowers; peduncle curved upward and thickened, 5.0 – 8.0 mm long, proximally covered with one sheath; floral bracts ovate-lanceolate, 0.8 – 1.2 cm long, apex acute. Flowers spreading, ca. 1.0 × 1.4 cm, pedicel and ovary connate, 6.0 – 9.0 mm long, sepals and petals heterochromatic on both surfaces, yellow-green with purplish-red spots on the outer side, purplish-red with yellow-green margin on the inner side. Dorsal and lateral sepals similar and equal in size, elliptic, 5.6 – 6.4 × 4.8 – 5.2 mm, apex obtuse. Petals oblong, 5.0 – 5.8 × 4.0 – 4.4 mm, apex acute, base narrowed. Labellum with a reniform epichile, revolute, white with purplish-red spots, 10.0 – 12.0 × 5.5 – 6.5 mm, margin erose, smooth and glabrous above, central thickened purple-red mat with two inconspicuous ridges; hypochile sub-hemispherical, yellowish-green with purplish-red spots, 6.0 – 8.0 × 5.8 – 7.5 mm, dorsally compressed, obtuse-rounded at the apex. Column cylindrical, ca. 1.5 mm long; viscidium yellow, ca. 0.7 × 0.4 mm; stipe white, ca. 1.1 mm long; anther cap purplish-red, ca. 1.5 × 1.3 mm, rostellum bilobed, lobes acuminate at the apex; pollinia 2, ca. 0.5 × 0.4 mm, yellow, subglobular, porate; stigma deeply sunken, inverted V-shaped, ca. 0.7 mm long, yellow. Capsule ellipsoid, 12.0 – 15.0 × 8.0 – 10.0 mm, green with sparse purplish-red spots, prominently 6 - ribbed.	en	Zhang, Jun-Yi, Cheng, Yue-Hong, Liao, Min, Jin, Sen-Long, Lin, Hong-Qiang, Yang, Pan-Yan, He, Hai, Xu, Bo (2024): Gastrochilus balangshanensis (Orchidaceae, Aeridinae), a new subalpine epiphytic orchid from the Mountains of Southwest China. PhytoKeys 247: 123-135, DOI: 10.3897/phytokeys.247.130755
13F088655F2F5BAA8F678B0AA45CAD56.taxon	distribution	Distribution and habitat. Gastrochilus balangshanensis is currently known only from Yinchanggou, Balang Mountain, Wenchuan County, Sichuan Province, Southwest China, part of the Hengduan Mountains (Fig. 4). It is epiphytic on tree trunks or branches in subalpine mixed coniferous forest dominated by Abies fargesii var. faxoniana (Rehder & E. H. Wilson) T. S. Liu, at an elevational range between 2200 – 2300 m, co-occurring with two terrestrial orchids, Goodyera recurva Lindl. and Calanthe arcuata Rolfe.	en	Zhang, Jun-Yi, Cheng, Yue-Hong, Liao, Min, Jin, Sen-Long, Lin, Hong-Qiang, Yang, Pan-Yan, He, Hai, Xu, Bo (2024): Gastrochilus balangshanensis (Orchidaceae, Aeridinae), a new subalpine epiphytic orchid from the Mountains of Southwest China. PhytoKeys 247: 123-135, DOI: 10.3897/phytokeys.247.130755
13F088655F2F5BAA8F678B0AA45CAD56.taxon	etymology	Etymology. Its specific epithet refers to the Balang Mountain, type locality of this new orchid. A Chinese name, “ ba lang shan peng ju lan ” (巴朗山盆距兰), is suggested here.	en	Zhang, Jun-Yi, Cheng, Yue-Hong, Liao, Min, Jin, Sen-Long, Lin, Hong-Qiang, Yang, Pan-Yan, He, Hai, Xu, Bo (2024): Gastrochilus balangshanensis (Orchidaceae, Aeridinae), a new subalpine epiphytic orchid from the Mountains of Southwest China. PhytoKeys 247: 123-135, DOI: 10.3897/phytokeys.247.130755
