Astragalus ertterae

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Walker Pass milkvetch
Astragalus ertterae Habit flinton lg.jpg
Status TNC G1.svg
Critically Imperiled  (NatureServe)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Astragalus
Species:
A. ertterae
Binomial name
Astragalus ertterae
Barneby & Shevock

Astragalus ertterae is a rare species of milkvetch known by the common name Walker Pass milkvetch. It is endemic to California, where it is known from only three occurrences near Walker Pass in the Sierra Nevada. It is endangered by trampling, trail use, and also grazing. [1]

Contents

It is only found in the northeast corner of Kern county, in the Sierra Nevada. It's bloom period is April and May. [2]

Description

Astragalus ertterae is hairy perennial herb with a stem no more than 10 centimeters long, much of which grows underground. There are 4 or 5 leaves which are a few centimeters long and made up of several oval-shaped leaflets. The dense inflorescence holds up to 17 cream-colored flowers, each about a centimeter long. The fruit is a swollen, hairless legume pod which dries to a leathery texture.

It is closely morphologically related to Astragalus bicristatus. [3]

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<i>Astragalus clevelandii</i> Species of legume

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<i>Astragalus coccineus</i> Species of plant

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<i>Astragalus congdonii</i> Species of legume

Astragalus congdonii is a species of milkvetch known by the common name Congdon's milkvetch. It is a perennial herb that is endemic to central California.

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<i>Astragalus deanei</i> Species of legume

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<i>Astragalus gilmanii</i> Species of legume

Astragalus gilmanii is a species of milkvetch known by the common name Gilman's milkvetch. It is native to the desert scrub and woodland of Nevada, the California Sierra Nevada and Inyo Mountains, and it is known from a few locations in the Panamint Range adjacent to Death Valley in California.

<i>Astragalus inversus</i> Species of legume

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<i>Astragalus inyoensis</i> Species of legume

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<i>Astragalus kentrophyta</i> Species of legume

Astragalus kentrophyta is a species of milkvetch known by the common name spiny milkvetch. It is native to western North America from central to west Canada, to California, to New Mexico. It grows in rocky mountainous areas, such as the Sierra Nevada, and on plateaus.

<i>Astragalus lentiformis</i> Species of legume

Astragalus lentiformis is a species of milkvetch known by the common name lens-pod milkvetch. It is endemic to the Sierra Nevada in eastern Plumas County, California, where it grows in chaparral scrub and coniferous forests.

<i>Astragalus oxyphysus</i> Species of legume

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<i>Astragalus pycnostachyus</i> Species of aquatic plant

Astragalus pycnostachyus is a species of milkvetch known by the common name marsh milkvetch. It is endemic to the coastline of California, where it grows in wet saline habitat such as marshes.

<i>Astragalus webberi</i> Species of legume

Astragalus webberi is a rare species of milkvetch known by the common name Webber's milkvetch. It is endemic to the coniferous forests in the Sierra Nevada, in Plumas County, eastern California.

<i>Astragalus desereticus</i> Species of legume

Astragalus desereticus is a rare species of milkvetch known by the common name Deseret milkvetch. It is endemic to Utah County, Utah, where it is known from only one population. It was thought to be extinct until 1981 when this population was discovered. The population contains 5,000 to 10,000 plants on an area of land covering less than 300 acres. It is vulnerable to damage from grazing cattle, which eat the plant and trample the soil, and from development and erosion. This is a federally listed threatened species.

<i>Astragalus lentiginosus <span style="font-style:normal;">var.</span> iodanthus</i> Species of legume

Astragalus lentiginosus var. iodanthus, synonym Astragalus iodanthus, is a variety of Astragalus lentiginosus, a flowering plant in the legume family, Fabaceae. It is known by the common names Humboldt River milkvetch and violet milkvetch. It is native to the western United States, where its range includes California, Idaho, Nevada, Oregon, and Utah. It grows on hills and in valleys in barren sandy and volcanic soils in habitat such as sagebrush.

References

  1. "Astragalus ertterae, Walker Pass milkvetch". www.fs.usda.gov. Retrieved 2023-08-04.
  2. "Astragalus ertterae Calflora". www.calflora.org. Retrieved 2023-08-04.
  3. Barneby, Rupert; Shevock, James (1987-01-01). "Astralagus ertterae (Fabaceae), a New Species from the Southern Sierra Nevada". Aliso: A Journal of Systematic and Floristic Botany. 11 (4): 585–588. doi: 10.5642/aliso.19871104.13 . ISSN   0065-6275.