Allium howellii
{{Short description|Species of flowering plant}}
{{Speciesbox
| image = Allium howellii (Howell's onion) (5724554963).jpg
| taxon = Allium howellii
| parent = Allium subg. Melanocrommyum
| authority = Eastw.
| status = G3
| status_system = TNC
| status_ref = {{cite web | url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.137761/Allium_howellii | title=NatureServe Explorer 2.0 }}
}}
Allium howellii is a North American species of wild onion known by the common name Howell's onion. It is endemic to California.
Description
Allium howellii is a tall onion plant, producing a stem which may exceed half a meter in height from a reddish-brown bulb one to two centimeters long. There is a single cylindrical leaf about as long as the stem. The inflorescence holds up to 100 dark-veined lavender to white flowers, each under a centimeter long.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242101365 Flora of North America Allium howellii][http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?8349,8354,8381 Jepson Manual Treatment]
[http://plants.usda.gov/java/profile?symbol=ALHO2 USDA Plants Profile]
Varieties
Several varieties have been named:[http://apps.kew.org/wcsp/namedetail.do?name_id=295726 Kew World Checklist of Selected Plant Families]
- Allium howellii var. clokeyi Ownbey & Aase ex TraubTraub, Hamilton Paul. 1972. Plant Life 28: 63–64 - San Bernardino, Los Angeles, Ventura, Santa Barbara counties
- Allium howellii var. howellii - Merced, Fresno, Kern, San Luis Obispo counties
- Allium howellii var. sanbenitense (Traub) Ownbey & Aase Traub, Hamilton Paul, & Aase, Hannah Caroline. 1959. in Munz, Philip Alexander & Keck, David Daniels. California Flora page 1376 - San Benito County
Distribution and habitat
Howell's onion grows in the granite and serpentine soils of several mountain ranges, hills, and valleys from San Joaquin County to San Bernardino County.[https://www.biodiversitylibrary.org/page/13171172#page/133/mode/1up Eastwood, Alice 1938. New Species in Liliaceae. Leaflets of Western Botany 2(7): 109][http://www.tropicos.org/Name/18401682 Tropicos, Allium howellii Eastw.][http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Allium+howellii Calflora Consortium of California Herbaria Taxon Report 199 , Allium howellii Eastw., Howell's onion ][http://bonap.net/MapGallery/County/Allium%20howellii.png Biota of North America 2013 county distribution map]
References
{{Reflist}}
External links
- [http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Allium+howellii Calflora Database: Allium howellii (Howell's onion)]
- [http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=12587 Jepson eFlora (TJM2): Allium howellii ]
- [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Allium+howellii UC Photos gallery of Allium howellii ]
{{Taxonbar|from=Q4732907}}
{{DEFAULTSORT:Allium Howellii}}
Category:Endemic flora of California
Category:Natural history of the California chaparral and woodlands
Category:Natural history of the California Coast Ranges
Category:Natural history of the Transverse Ranges
Category:Plants described in 1938
Category:Taxa named by Alice Eastwood
{{Allium-stub}}