| 词条 | Allium praecox |
| 释义 |
| taxon = Allium praecox | image = Alliumpraecox.jpg | authority = Brandegee |synonyms=Allium hyalinum var. praecox (Brandegee) Jeps. }} Allium praecox is a species of wild onion known by the common name early onion. DistributionIt is native to the hills and mountains of southern California and Baja California, where it grows in shady areas in clay soils at elevations up to 800 m. The species has been reported from Kern, San Bernardino, Los Angeles, Riverside, Santa Barbara, Orange and San Diego Counties. This includes some populations on the Channel Islands.[1][2] DescriptionAllium praecox grows from a brownish or grayish bulb between one and two centimeters long. The scape is round in cross-section, up to 60 cm long. A single plant generally has two or three long, keeled leaves about the same length as the scape or sometimes a little longer. The umble consistes up to 40 flowers, each on a long pedicel up to 4 cm long, the flowers up to 15 mm across. The tepals are pink with darker purple veins. Anthers are purple or yellow; pollen yellow.[1][3][4][5] References1. ^1 Flora of North America v 26 p 263 Allium praecox {{Commons category|Allium praecox|position=left}}{{Allium}}{{Taxonbar|from=Q4732928}}{{-}}{{DEFAULTSORT:Allium Praecox}}{{Asparagales-stub}}2. ^USDA Plants Profile 3. ^Hickman, J. C. 1993. The Jepson Manual: Higher Plants of California 1–1400. University of California Press, Berkeley. Allium praecox 4. ^Allium praecox Photo gallery 5. ^Shreve, F. & I. L. Wiggins. 1964. Vegetation and Flora of the Sonoran Desert. 2 vols. Stanford University Press, Stanford. 9 : Allium|Flora of California|Flora of Baja California|Natural history of the California chaparral and woodlands|Natural history of the Channel Islands of California|Natural history of the Peninsular Ranges|Natural history of the Transverse Ranges|Onions|Taxa named by Townshend Stith Brandegee |
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