Allium tribracteatum

Threebract onion
Scientific classification
Kingdom:Plantae
Clade:Angiosperms
Clade:Monocots
Order:Asparagales
Family:Amaryllidaceae
Subfamily:Allioideae
Genus:Allium
Species: A. tribracteatum
Binomial name
Allium tribracteatum
Synonyms[1]
  • Allium tolmiei Baker ex J.M.Coult. 1885, illegitimate homonym not Baker 1876

Allium tribracteatum, known by the common name Threebract onion,[2] is a species of wild onion [3] found in California.

Distribution

The plant is endemic to California, where it is known only from the slopes of the Sierra Nevada in Tuolumne and Calaveras Counties.[3][4][5]

Description

Allium tribracteatum is a small onion plant producing a stem only a few centimeters long from an oval-shaped bulb. There are two leaves which are usually much longer than the stem. The inflorescence contains up to 30 petite white to purple flowers, each less than a centimeter long. Tepals are white to pink with red or purple midveins; anthers purple; pollen gray.[3][6][4]

References

  1. ↑ Kew World Checklist of Selected Plant Families
  2. ↑ CalFlora taxon report 237, Allium tribracteatum Torrey (three bracted onion, threebract onion)
  3. 1 2 3 Jepson Treament, University of California, Berkeley . accessed 3.20.2013
  4. 1 2 Flora of North America v 26 p 269, Allium tribracteatum
  5. ↑ United States department of Agriculture Plants Profile, Allium tribracteatum
  6. ↑ Torrey, John. 1857. Reports of explorations and surveys : to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean, made under the direction of the Secretary of War 4(5): 148.


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