| Threebract onion | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Amaryllidaceae |
| Subfamily: | Allioideae |
| Genus: | Allium |
| Species: | A. tribracteatum |
| Binomial name | |
| Allium tribracteatum | |
| Synonyms[2] | |
| |
Allium tribracteatum, known by the common name Threebract onion,[3] is a species of wild onion[4] found in California.
Distribution and habitat
The plant is endemic to California, where it is known only from the slopes of the Sierra Nevada in Tuolumne and Calaveras Counties.[4][5][6]
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.[4][7][5] Flowers bloom March to May.[5]
References
- ↑ "NatureServe Explorer 2.0".
- ↑ Kew World Checklist of Selected Plant Families
- ↑ CalFlora taxon report 237, Allium tribracteatum Torrey (three bracted onion, threebract onion)
- 1 2 3 Jepson Treament, University of California, Berkeley . accessed 3.20.2013
- 1 2 3 Flora of North America v 26 p 269, Allium tribracteatum
- ↑ United States department of Agriculture Plants Profile, Allium tribracteatum
- ↑ 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.
External links
- Allium tribracteatum in the CalPhotos photo database, University of California, Berkeley
- Jepson Manual Treatment
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