Allium siskiyouense

{{Short description|Species of flowering plant}}

{{Speciesbox

| taxon = Allium siskiyouense

| parent = Allium subg. Amerallium

|image = Allium siskiyouense.jpeg

|image_caption =

|name=Siskiyou onion

| authority = F.M.Ownbey ex Traub

|synonyms_ref=[http://apps.kew.org/wcsp/synonomy.do?name_id=296618 Kew World Checklist of Selected Plant Families]

|synonyms=*Allium falcifolium var. demissum Jeps.

• Allium siskiyouense Ownbey in Munz & Keck 1959, not validly published, no Latin description

}}

Allium siskiyouense is a North American species of wild onion known by the common name Siskiyou onion. It is native to the Klamath Mountains and nearby ranges of northern California and Oregon.[http://bonap.net/MapGallery/County/Allium%20siskiyouense.png Biota of North America Program 2013 county distribution map] It grows in serpentine and other rocky soil types.[http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Allium+siskiyouense Calflora taxon report 235, Allium siskiyouense Ownbey, Siskiyou onion ]

This small onion plant grows from a reddish-brown bulb {{convert|1|or|2|cm|in|frac=3|abbr=on}} long. It produces a short stem no more than {{convert|8|cm|in|0|abbr=on}} long and two sickle-shaped leaves which are usually longer. The inflorescence contains up to about 35 flowers, each with dark-veined pink tepals around {{convert|1|cm|in|frac=3|abbr=on}} long and sometimes toothed at the tips.[http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?8349,8354,8417 Jepson Manual Treatment][http://plants.usda.gov/java/profile?symbol=ALSI2 United States Department of Agriculture Plants Profile][http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242101404 Flora of North America]