Biology:Allium howellii

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Short description: Species of flowering plant

Allium howellii
Allium howellii (Howell's onion) (5724554963).jpg

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

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.[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

Wikidata ☰ Q4732907 entry