{{short description|Species of wild onion widespread across much of East Asia}} {{ntbcw|Solo garlic}} {{Speciesbox |name = Long-stamen chive | image = Allium macrostemon 1.JPG | image_alt = "Allium macrostemon", Tanesashi Coast, Aomori Prefecture, Japan | image_caption = ''Allium macrostemon'', Tanesashi Coast, Aomori Prefecture, Japan |status = LC |status_system = IUCN3.1 |status_ref = <ref name="iucn status 18 November 2021">{{cite iucn |author=Rhodes, L. |author2=Maxted, N. |date=2016 |title=''Allium macrostemon'' |volume=2016 |article-number=e.T201505A47600689 |doi=10.2305/IUCN.UK.2016-3.RLTS.T201505A47600689.en |access-date=18 November 2021}}</ref> |taxon = Allium macrostemon |parent = Allium subg. Allium |authority = Bunge<ref>{{cite web |url= https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:528368-1 |title= Allium macrostemon Bunge |author=<!--Not stated--> |date=n.d. |website=Plants of the World Online |publisher=The Trustees of the Royal Botanic Gardens, Kew |access-date=October 29, 2022}}</ref><ref>{{cite web |url= https://www.catalogueoflife.org/data/taxon/65XF6 |title= Allium macrostemon Bunge |author=<!--Not stated--> |date=n.d. |website=Catalogue of Life |publisher=Species 2000 |access-date=October 29, 2022}}</ref> |synonyms=*''Allium chanetii'' <small>H.Lév.</small> *''Allium grayi'' <small>Regel</small> *''Allium grayi'' var. ''chanetii'' <small>(H. Lév.) H. Lév.</small> *''Allium macrostemon'' var. ''uratense'' <small>(Franch.) Airy Shaw</small> *''Allium nereidum'' <small>Hance</small> *''Allium nipponicum'' <small>Franch. & Sav.</small> *''Allium ousensanense'' <small>Nakai</small> *''Allium iatasen'' <small>H.Lév.</small> *''Allium pallasii'' var. ''uratense'' <small>(Franch.) Regel</small> *''Allium uratense'' <small>Franch.</small> |synonyms_ref=<ref>[http://www.theplantlist.org/tpl1.1/record/kew-295955 The Plant List]</ref> }}

'''''Allium macrostemon''''' (野蒜, ノビル), '''Japanese wild onion''', '''Spring onion''', '''Green onion''', '''Chinese garlic''', '''Japanese garlic''' or '''long-stamen onion''',<ref name = GRIN>{{GRIN}}</ref> is a species of wild onion widespread across much of East Asia. It is known from many parts of China, as well as Japan (incl Ryukyu Islands), Korea, Mongolia, Tibet and Primorye. It has been collected from elevations ranging from sea level to 3000 m.<ref name="freetibet">[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200027501 Flora of China v 24 p 199<big>薤白</big> xie bai ''Allium macrostemon'']</ref><ref>Kharkevich, S.S. (ed.) (1987). Plantae Vasculares Orientalis Extremi Sovietici 2: 1-448. Nauka, Leningrad.</ref><ref>Lee, W.T. (1996). Lineamenta Florae Koreae: 1-1688. Soul T'ukpyolsi: Ak'ademi Sojok.</ref><ref>Grubov, V.I. (2001). Key to the Vascular Plants of Mongolia 1: 1-411. Science Publishers, Inc. Enfield, USA. Plymouth, U.K.</ref><ref>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.</ref>

''Allium macrostemon'' produces one round bulb up to 2&nbsp;cm in diameter. Scape is up to 70&nbsp;cm tall. Leaves are shorter than the scape, long and hollow, round or triangular in cross-section. Umbel is large and crowded with many pale red or pale purple flowers.<ref name="freetibet"/><ref>Bunge, Alexander Andrejewitsch. 1833. Enumeratio Plantarum, quas in China Boreali 65–66.</ref><ref>[http://www.tropicos.org/Image/17843 line drawing of ''Allium macrostemon'', Flora of China Illustrations vol. 24, fig. 225, 8]</ref>

Allium macrostemon is mentioned in Huangdi Neijing as one of the five consumable herbs (五菜) which included mallow (''Malva verticillata'') (葵), pea leaves (藿), Welsh onion (蔥) and garlic chives (韭).<ref>{{citation|title=古代五菜 |date=2010-03-04 |url=http://paper.dzwww.com/ncdz/data/20100304/html/6/content_2.html}}</ref>

==References== {{Reflist|30em}}

==External links== * {{PFAF|Allium macrostemon}}

{{Taxonbar|from=Q143657}}

macrostemon Category:Onions Category:Flora of Manchuria Category:Flora of China Category:Flora of Eastern Asia Category:Flora of the Russian Far East Category:Plants described in 1833 Category:Taxa named by Alexander von Bunge