bio.wikisort.org - Plant

Allium howellii is a North American species of wild onion known by the common name Howell's onion. It is endemic to California.

Allium howellii
Conservation status
Vulnerable  (NatureServe)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Amaryllidaceae
Subfamily:	Allioideae
Genus:	Allium
Species:	A. howellii
Binomial name
Allium howellii Eastw.

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.[2][3][4]

Varieties

Several varieties have been named:[5][6]

• Allium howellii var. clokeyi Ownbey & Aase ex Traub[7] - 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 [8] - 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.[9][10][6][11]

References

External links

• Calflora Database: Allium howellii (Howell's onion)
• Jepson eFlora (TJM2): Allium howellii
• UC Photos gallery of Allium howellii

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