{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T13:59:04Z","timestamp":1790258344590,"version":"4.1.0"},"reference-count":40,"publisher":"Pensoft Publishers","license":[{"start":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T00:00:00Z","timestamp":1790208000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["PK"],"abstract":"<jats:p>\n                    <jats:italic>Elymus chaobotryus<\/jats:italic>\n                    Y.C. Zhang, sp. nov. (Poaceae, Triticeae) from the north\u2013eastern Qinghai-Tibetan Plateau (Tongren City, southeastern Qinghai, China) is described and illustrated based on detailed morphological comparisons and complete plastome data. The new species is readily distinguished from morphologically similar taxa by its pendulous compound spike 16\u201319 cm long, bearing 10\u201315 short lateral branches (2\u20134 cm) produced from nearly all nodes of the main rachis; the branches become progressively longer toward the base, giving the inflorescence a characteristic grape-like appearance. It further differs in having lanceolate glumes 3\u20134 mm long with mucros (&amp;lt; 0.9 mm), lanceolate lemmas 5\u20137 mm long with awns (3\u20134 mm), and conspicuously narrow leaf blades (2\u20135 mm wide). Flow-cytometric analysis estimated a genome size of 11.43 Gb, while chromosome and cytogenetic analyses confirmed a hexaploid chromosome complement (2n = 6x = 42) and were consistent with an StHY genomic constitution. In plastome-based phylogenetic analyses,\n                    <jats:italic>E. chaobotryus<\/jats:italic>\n                    is placed within the broader\n                    <jats:italic>Elymus<\/jats:italic>\n                    complex and is recovered as sister to\n                    <jats:italic>E. dahuricus<\/jats:italic>\n                    .\n                  <\/jats:p>","DOI":"10.3897\/phytokeys.279.181697","type":"journal-article","created":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T13:01:20Z","timestamp":1790254880000},"page":"215-244","source":"Crossref","is-referenced-by-count":0,"title":["Elymus chaobotryus (Poaceae), a new species from the north-eastern Qinghai-Tibetan Plateau, China"],"prefix":"10.3897","volume":"279","author":[{"given":"Yong-Chao","family":"Zhang","sequence":"first","affiliation":[{"name":"Qinghai Yuancaosheng Agriculture and Animal Husbandry Technology Co., Ltd., Xining, China"},{"name":"Key Laboratory of the Alpine Grassland Ecology in the Three Rivers Region (Qinghai University) Ministry of Education, Qinghai University (Qinghai Academy of Animal Science and Veterinary), Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sa","family":"Xiao","sequence":"additional","affiliation":[{"name":"Museum of Qinghai-Tibet Plateau Biology, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin-Yun","family":"Ma","sequence":"additional","affiliation":[{"name":"Haibei Tibetan Autonomous Prefecture Grassland Station, Haibei Tibetan Autonomous Prefecture, Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ji-Gui","family":"Chen","sequence":"additional","affiliation":[{"name":"Grassland Station, Menyuan Hui Autonomous County, Haibei Tibetan Autonomous Prefecture, Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Qin","sequence":"additional","affiliation":[{"name":"Key Laboratory of the Alpine Grassland Ecology in the Three Rivers Region (Qinghai University) Ministry of Education, Qinghai University (Qinghai Academy of Animal Science and Veterinary), Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of the Alpine Grassland Ecology in the Three Rivers Region (Qinghai University) Ministry of Education, Qinghai University (Qinghai Academy of Animal Science and Veterinary), Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhi-Ying","family":"Guo","sequence":"additional","affiliation":[{"name":"Grassland Station, Menyuan Hui Autonomous County, Haibei Tibetan Autonomous Prefecture, Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu-Qing","family":"Zhou","sequence":"additional","affiliation":[{"name":"Hai Bei Demonstration Zone of Plateau Modern Ecological Animal Husbandry Science and Technology, Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dian-Zhi","family":"Zhao","sequence":"additional","affiliation":[{"name":"Natural Resources, Forestry and Grassland Bureau of Gangcha County, Haibei Tibetan Autonomous Prefecture, Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qing-Sheng","family":"Shan","sequence":"additional","affiliation":[{"name":"Hai Bei Demonstration Zone of Plateau Modern Ecological Animal Husbandry Science and Technology, Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hai-Zhang","family":"Lu","sequence":"additional","affiliation":[{"name":"Xining Botanical Garden, Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao-Xing","family":"Wei","sequence":"additional","affiliation":[{"name":"Key Laboratory of the Alpine Grassland Ecology in the Three Rivers Region (Qinghai University) Ministry of Education, Qinghai University (Qinghai Academy of Animal Science and Veterinary), Xining, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2258","published-online":{"date-parts":[[2026,9,24]]},"reference":[{"key":"181697_B1","doi-asserted-by":"publisher","DOI":"10.3897\/phytokeys.257.142950"},{"key":"181697_B2","doi-asserted-by":"publisher","DOI":"10.1002\/j.1537-2197.1985.tb08337.x"},{"key":"181697_B3","doi-asserted-by":"publisher","DOI":"10.1139\/b91-038"},{"key":"181697_B4","doi-asserted-by":"publisher","DOI":"10.1093\/aob\/mcm146"},{"key":"181697_B5","unstructured":"Bentham G, Hooker JD (1883) Genera Plantarum, Vol. 3. 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