| Astragalus layneae | |
|---|---|
 | |
| herbarium specimen | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Astragalus |
| Species: | A. layneae |
| Binomial name | |
| Astragalus layneae | |
Astragalus layneae is a species of milkvetch known by the common name widow's milkvetch. It is native to the Mojave Desert and surrounding mountain ridges in California and Nevada.
This is a small perennial herb growing from a deep rhizome and producing erect stems no taller than about 16 centimeters. The leaves are made up of many oval to rounded leaflets, and stem and leaves are coated in gray-green hairs.
The inflorescence is covered in dark hairs and bears up to 45 flowers. Each flower is between one and two centimeters in length and has white petals tipped and streaked in bright purple. The fruit is a hanging legume pod up to 6.5 centimeters long. It is curved in shape and leathery and hairy in texture.
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Astragalus acutirostris is a species of milkvetch known by the common name sharpkeel milkvetch. It is native to the Mojave Desert and surroundings of California, Nevada, and Arizona, where it grows in dry, sandy, gravelly areas.
Astragalus agrestis is a species of milkvetch known by the common names purple milkvetch, purple loco, and field milkvetch. It is native to much of western and northern North America from most of Canada to the southwestern United States, as well as eastern Asia. It grows in vernally moist areas such as meadows, and is often found in sagebrush.
Astragalus albens is a species of milkvetch known by the common names Cushenbury milkvetch and silvery-white milkvetch.
Astragalus andersonii is a species of milkvetch known by the common name Anderson's milkvetch. It is native to eastern California and western Nevada, where it is found in the plateaus at the foot of the Sierra Nevada, including the Modoc Plateau. It was named after Charles Lewis Anderson by Asa Gray.
Astragalus anxius is a rare species of milkvetch known by the common names troubled milkvetch and Ash Valley milkvetch. It is endemic to northern Lassen County, California, where it is critically imperiled. It was formally described in 1992.
Astragalus austiniae is a species of milkvetch known by the common name Austin's milkvetch. It is native to the Sierra Nevada of California and Nevada in the vicinity of Lake Tahoe. It is a plant of the alpine climate of the high mountains, where it tolerates exposed areas.
Astragalus bicristatus is a species of milkvetch known by the common names crested milkvetch and two-crested milkvetch. It is endemic to southern California, where it grows in the coniferous forests of the San Gabriel and San Bernardino Mountains of the Transverse Ranges.
Astragalus bolanderi is a species of milkvetch known by the common name Bolander's milkvetch. It is native to western Nevada and parts of the Sierra Nevada in California. It grows in dry, rocky habitat on mountain and plateau.
Astragalus funereus is an uncommon species of milkvetch known by the common names Funeral Mountain milkvetch and black milkvetch.
Astragalus gambelianus is a species of milkvetch known by the common name Gambel's dwarf milkvetch. It is native to California, with its distribution extending into Oregon to the north and Baja California to the south.
Astragalus jaegerianus is a rare species of milkvetch known by the common name Lane Mountain milkvetch. The plant was named for the biologist Edmund Jaeger, who first documented it in 1939.
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.
Astragalus malacus is a species of milkvetch known by the common name shaggy milkvetch. It is native to the Great Basin in the western United States.
Astragalus nutans is a species of milkvetch known by the common name Providence Mountains milkvetch.
Astragalus purshii is a species of milkvetch known by the common names woollypod milkvetch and Pursh's milkvetch.
Astragalus subvestitus is a species of milkvetch known by the common name Kern County milkvetch.
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.
Astragalus australis is a species of flowering plant in the legume family known by the common name Indian milkvetch. It is native to much of the Northern Hemisphere, including northern North America, Europe, and temperate Asia.
Astragalus proximus is a species of flowering plant in the legume family known by the common name Aztec milkvetch. It is native to southern Colorado and northern New Mexico in the United States.
Astragalus wetherillii is a species of flowering plant in the legume family known by the common name Wetherill's milkvetch. It is native to Colorado and Utah in the United States.