Acmispon argophyllus
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L. argophyllus
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| Binomial name | |
| Lotus argophyllus |
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Acmispon argophyllus (A. Gray) Brouillet |
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Lotus argophyllus is a species of legume known by the common name silver bird's-foot trefoil. It is also sometimes classified as Acmispon argophyllus. [1]
It is endemic to California, where it can be found in the southern California Coast Ranges, Peninsular Ranges, and Transverse Ranges, the Sierra Nevada, Southern California coastal zones, and the Channel Islands. It is found in chaparral, conifer forest, and other habitat types.
Description
Lotus argophyllus is a perennial herb growing prostrate to erect, the base of its stem woody and tough and upper parts coat in silky silvery hairs. The leaves are each made up of pairs of hairy oval leaflike leaflets around a centimeter long.
The inflorescence is a cluster of many tubular yellow flowers each about a centimeter long, encased at the base in a calyx of silky-hairy sepals. The fruit is legume pod generally containing a single seed.
Varieties
The varieties of this species include: [1]
- L. a. var. adsurgens — San Clemente Island bird's-foot trefoil is endemic to San Clemente Island, one of the Channel Islands of California. It is rare. [2]
- L. a. var. argenteus — Channel Islands silver lotus is endemic to several of the Channel Islands. [3]
- L. a. var. argophyllus — Fremont's silver lotus is a more common variety which can be found in mainland distribution. [4]
- L. a. var. fremontii is known only from the Sierra Nevada.
- L. a. var. niveus — Santa Cruz Island bird's-foot trefoil, endemic to Santa Cruz Island, another of the Channel Islands, is rare. [5] [6]
See also
References
- ↑ 1.0 1.1 Calflora database: Acmispon argophyllus — (A. Gray) Brouillet . accessed 2.14.2013
- ↑ Calflora: L. a. var. adsurgens
- ↑ Calflora: L. a. var. argenteus
- ↑ Calflora: L. a. var. argophyllus
- ↑ Calflora: L. a. var. niveus
- ↑ Botany Photo of the Day: var niveus
External links
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- Lotus (genus)
- Endemic flora of California
- Flora of the Sierra Nevada (U.S.)
- Natural history of the California chaparral and woodlands
- Natural history of the California Coast Ranges
- Natural history of the Channel Islands of California
- Natural history of the Peninsular Ranges
- Natural history of the Santa Monica Mountains
- Natural history of the Transverse Ranges
- Faboideae stubs
