Allium longistylum

{{short description|Species of plant}}

{{Speciesbox

|name = Allium longistylum

|genus = Allium | species = longistylum

|authority = Baker

|synonyms=*Allium hopeiense Nakai

• Allium jeholense Franch.

|synonyms_ref=[http://www.theplantlist.org/tpl1.1/record/kew-295927 The Plant List][http://apps.kew.org/wcsp/synonomy.do?name_id=295927 Kew World Checklist of Selected Plant Families]

}}

Allium longistylum, also called riverside chive,{{Cite book|url=http://www.forest.go.kr/kna/special/download/English_Names_for_Korean_Native_Plants.pdf |title=English Names for Korean Native Plants |publisher=Korea National Arboretum |year=2015 |isbn=978-89-97450-98-5 |location=Pocheon |pages=347 |access-date=17 December 2016 |via=Korea Forest Service |url-status=dead |archiveurl=https://web.archive.org/web/20170525105020/http://www.forest.go.kr/kna/special/download/English_Names_for_Korean_Native_Plants.pdf |archivedate=25 May 2017 }} is a species of wild onion native to Korea and northern China (Hebei, Inner Mongolia, Shanxi). It grows at elevations of 1500–3000 m.[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200027499 Flora of China v 24 p 192 长柱韭 chang zhu jiu Allium longistylum]Choi, H.J. & Oh, B.U. (2011). A partial revision of Allium (Amaryllidaceae) in Korea and north-eastern China. Botanical Journal of the Linnean Society 167: 153-211.

Allium longistylum has bulbs rarely more than 8 mm across. Scape is up to 50 cm high. Leaves are about the same length as the scape but only 2–3 mm across. Umbels are spherical. Flowers are red or reddish-purple.[http://www.botanicus.org/page/1897161 Baker, John Gilbert. 1874. Journal of Botany, British and Foreign 12(142): 294.][http://www.tropicos.org/Image/57817 line drawing of Allium longistylum, Flora of China Illustrations vol. 24, fig. 210, 1-4 ]Nakai, Takenoshin. 1943. Journal of Japanese Botany 19:316.Franchet, Adrien René. 1884. Plantae Davidianae ex Sinarum Imperio 1: 305.