Astragalus leucolobus is a species of milkvetch known by the common names Bear Valley milkvetch and Bear Valley woollypod. It is endemic to the mountain ranges of southern California, where it is known from scattered occurrences in the San Gabriel, San Bernardino, and San Jacinto Mountains. It is a plant of mountain forest and woodland. This is a small perennial herb forming a low clump of spreading stems and woolly leaves. The stems are less than 7 centimeters in length and bear leaves made up of many oval-shaped, pointed leaflets. An inflorescence of 5 to 13 flowers rises above the clump of herbage. Each flower is pinkish purple and is between one and two centimeters long. The fruit is a densely woolly white legume pod with a bent tip.

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 malacus is perennial herb growing upright to a maximum height near 40 centimeters. Its leaves are up to 15 centimeters long and are made up of many oval-shaped leaflets. The inflorescence bears up to 35 magenta flowers, each up to 2 centimeters long. Stem, leaves, inflorescence, and sepals are coated in long, white hairs. The fruit is a densely hairy, papery legume pod up to 4 centimeters in length. Astragalus malacus is perennial herb growing upright to a maximum height near 40 centimeters. Its leaves are up to 15 centimeters long and are made up of many oval-shaped leaflets. The inflorescence bears up to 35 magenta flowers, each up to 2 centimeters long. Stem, leaves, inflorescence, and sepals are coated in long, white hairs. The fruit is a densely hairy, papery legume pod up to 4 centimeters in length.

Astragalus miguelensis is a rare species of milkvetch known by the common name San Miguel milkvetch. It is endemic to five of the eight Channel Islands of California. This is a mat-forming perennial herb growing in wide, thick patches on rocky seaside bluffs and beaches. The abundant leaves are up to 12 centimeters long and are made up of many woolly oval-shaped leaflets. The inflorescence bears up to 30 white to yellowish flowers, each between one and two centimeters long. The fruit is an inflated legume pod drying to a papery texture. It is up to about 2. 5 centimeters in length.

Astragalus mohavensis is a species of milkvetch known by the common name Mojave milkvetch. It is native to the Mojave Desert of California and Nevada. This is an annual or perennial herb forming clumpy gray-green patches of upright stems up to 35 centimeters long. Leaves are up to about 12 centimeters long and are made up of many oval-shaped to rounded leaflets. The inflorescence bears up to 15 pinkish-purple flowers, each around a centimeter in length. The fruit is a hairy, leathery legume pod up to about 3 centimeters long. Varieties: There are two varieties of this plant. The rare variety A. m. var. hemigyrus, the halfring milkvetch, can be found only in Nevada, having been extirpated from the California side of the desert; it can be distinguished from the more common variety by its curved or coiled seed pods.

Astragalus monoensis is a rare species of milkvetch known by the common name Mono milkvetch. It is endemic to the open pumice plains of central Mono County, California. Astragalus monoensis is a rhizomatous perennial herb with stems growing partly underground and emerging to lie flat on the sand. The leaves are up to 3 centimeters long and are made up of several tiny oval-shaped leaflets. Stem and leaflets are hairy. Astragalus monoensis is a rhizomatous perennial herb with stems growing partly underground and emerging to lie flat on the sand. The leaves are up to 3 centimeters long and are made up of several tiny oval-shaped leaflets. Stem and leaflets are hairy. The inflorescence is a cluster of 6 to 12 very pale pink to yellowish flowers, each around a centimeter long. The fruit is a legume pod, curved to bent in shape and drying to a papery, hairy texture. It is 1. 5 to 2 centimeters in length and contains around 18 to 20 seeds in its two chambers.

Astragalus nevinii is a rare species of milkvetch known by the common name San Clemente Island milkvetch. It is endemic to San Clemente Island, one of the Channel Islands of California. This is perennial herb growing upright 10 to 30 centimeters tall. It is coated in woolly, tangled hairs. Its leaves are up to 8 centimeters long and are made up of many oblong leaflets. The inflorescence is a dense cluster of up to 30 cream-colored flowers, each around a centimeter in length. The fruit is a hanging legume pod up to 2 centimeters long which is papery in texture and mostly hairless.

Astragalus newberryi (Newberry's milkvetch), is a flowering plant in the family Fabaceae, native to the western United States from Idaho to New Mexico and California. A variety is found in the Death Valley area and the eastern Mojave Desert in California and Nevada. It grows in rocky and gravelly areas between 1,300-2,350 metres (4,270-7,710 ft) elevation. It is a perennial herbaceous plant, with pinnate leaves 1. 5-15 cm long with 3-15 leaflets, each leaflet 5-20 mm long. The flowers are pink-purple in color; flowering is between April and June. The fruit is a pod 13-28 mm long, containing a single seed. It is a perennial herbaceous plant, with pinnate leaves 1. 5-15 cm long with 3-15 leaflets, each leaflet 5-20 mm long. The flowers are pink-purple in color; flowering is between April and June. The fruit is a pod 13-28 mm long, containing a single seed.

Astragalus nutans is a species of milkvetch known by the common name Providence Mountains milkvetch. It is endemic to the Mojave Desert of eastern California, where it was named for the local Providence Mountains in the Mojave National Preserve. It is endemic to the Mojave Desert of eastern California, where it was named for the local Providence Mountains in the Mojave National Preserve. Astragalus nutans is a small annual or perennial herb growing patchlike and low to the ground or erect to a maximum height near 15 centimeters. Its leaves are a few centimeters long and are made up of several narrow oval-shaped leaflets. Stem and leaves are coated thinly in rough hairs. The inflorescence bears 6 to 10 pinkish purple flowers with pale petal tips. The fruit is an inflated legume pod up to 2. 5 centimeters long. It dries to a thin papery texture and contains many seeds in its single chamber.

Astragalus nuttallianus is a species of milkvetch known by the common names smallflower milkvetch and turkeypeas. It is native to the southwestern and south central United States and northern Mexico, where it can be found in many types of habitat, often in dry areas. This is an annual herb which is variable in appearance, especially across Varieties: It produces slender, hairy stems which reach 4 to 45 centimeters in length. The leaves are up to 6. 5 centimeters long and are made up of several oval-shaped pointed or round-tipped leaflets. The inflorescence bears 1 to 4 white to purple or bicolored flowers, each less than a centimeter in length. The fruit is a legume pod 12 to 26 mm long.

Astragalus nuttallii is a species of milkvetch known by the common name Nuttall's milkvetch. It is native to California and Baja California, where it grows in the sandy soils of coastal habitat. This is a perennial herb forming thick, tangled clumps of hairy to hairless stems up to a meter in length. The abundant leaves are up to 17 centimeters in length and made up of many oval-shaped leaflets. The inflorescence is a large, dense body of up to 125 flowers, each around 1 to 1. 5 centimeters long. The flowers are dull cream-colored and sometimes purple-tinted. The fruit is an inflated legume pod up to 6 centimeters long which dries to a papery texture and contains many seeds in its single chamber. One variety of this species, the ocean bluff milkvetch (var. nuttallii) is endemic to the Central Coast of California.

Astragalus obscurus is a species of milkvetch known by the common name arcane milkvetch. It is native to the northwestern United States of Idaho and Oregon and northern parts of Nevada and California. It is a plant of rocky areas in mountains and Great Basin plateaus. This is a small, mat-forming perennial herb with tufts of hairy stems approaching a maximum length of 15 centimeters. The leaves are up to 10 centimeters long and made up of thick oval-shaped leaflets. The inflorescence is a dense cluster of 5 to 15 off-white to faintly lilac-tinted flowers, each less than a centimeter long. The fruit is a narrow, leathery legume pod held upright in the infructescence. It may reach 2. 5 centimeters in length and usually has two chambers inside.

Astragalus oocarpus is a rare species of milkvetch known by the common names San Diego milkvetch and Descanso milkvetch. It is endemic to southern California, where it is known only from the Peninsular Ranges of San Diego County. Its range may extend north into Riverside County. It is a plant of the chaparral slopes and woodlands of the mountains. Astragalus oocarpus is a perennial herb producing upright to erect hollow stems up to 1. 3 meters tall. Leaves are up to 17 centimeters long and are made up of veiny lance-shaped leaflets each up to 3 centimeters in length. The stem and leaves are mostly hairless. The inflorescence holds up to 75 cream-colored flowers, each between 1 and 2 centimeters in length. The fruit is an inflated legume pod 1. 5 to 2. 5 centimeters long which dries to a stiff papery texture.

Egg milkvetch (Astragalus oophorus) is a perennial herb in the pea family that’s native to the western United States, mainly California and Nevada. It grows in places with extreme temperature fluctuations and limited moisture. Egg milkvetch is a compact plant with gray-green, oval leaves growing along a stout stem. 

The plant blooms in early summer. It has showy flowers that are cream-colored or reddish-purple with white tips. The fruit is a colorful, inflated, oval pod, resembling a bladder. Two varieties of this plant are also native to California. 

Egg milkvetch is not sold commercially but it may support various invertebrates, such as the orange sulphur butterfly and the alfalfa looper moth.

Astragalus oxyphysus is a species of milkvetch known by the common name Mt. Diablo milkvetch. It is endemic to central California, where it grows in dry grassland and scrub habitat in the Central Valley and the adjacent Inner Coast Ranges and Sierra Nevada foothills. Astragalus oxyphysus is a robust perennial herb forming clumps of erect, leafy stems up to 80 centimeters tall. Leaves are up to 17 centimeters long and are made up of many lance-shaped leaflets. The plant flowers in large inflorescences of up to 65 flowers each. Astragalus oxyphysus is a robust perennial herb forming clumps of erect, leafy stems up to 80 centimeters tall. Leaves are up to 17 centimeters long and are made up of many lance-shaped leaflets. The plant flowers in large inflorescences of up to 65 flowers each. The individual flower is cream-colored and at least 2 centimeters long. The fruit is a hanging legume pod up to 4 centimeters long. It is inflated but narrow and dries to a thin, almost transparent papery texture.

Astragalus pachypus is a species of milkvetch known by the common name thickpod milkvetch. It is endemic to California, where it is known from many types of open habitat across the southern half of the state. This is a robust perennial herb forming stands of tough, wiry stems up to 80 centimeters tall. Leaves are up to about 16 centimeters long and are made up of many narrow leaflets. The plant flowers in inflorescences of 4 to 28 cream-colored flowers. The fruit is a sharp-beaked legume pod up to about 3 centimeters long which dries to a leathery, mostly hairless texture. There are two varieties of this species. The rarer, Jaeger's bush milkvetch (var. jaegeri), is known mostly from western Riverside County.

Astragalus panamintensis is a species of milkvetch known by the common name Panamint milkvetch. It is endemic to Inyo County, California, where it is native to the Panamint Range. It grows from cracks in the limestone cliffs of the desert mountains. It is endemic to Inyo County, California, where it is native to the Panamint Range. It grows from cracks in the limestone cliffs of the desert mountains. Astragalus panamintensis is a small, brambly perennial herb having wiry, tangled, silvery green stems up to 15 centimeters long. The leaves are up to 12 centimeters long and are made up of a thin central shaft bearing a few widely spaced, pointed linear leaflets. The inflorescence holds one to four pinkish-purple flowers, each around a centimeter long. The fruit is a roughly hairy legume pod which is somewhat triangular in cross-section and dries to a papery texture. It may be nearly two centimeters long.

Astragalus pauperculus is an uncommon species of milkvetch known by the common name depauperate milkvetch. It is endemic to northern California, where it is known from the northern Sacramento Valley and the lowest reaches of the Cascade foothills adjacent. It grows in chaparral and vernally wet grassland habitat. This is a very small annual milkvetch which grows in a delicate mat with stems no longer than 10 centimeters. The few leaves are a few centimeters long and are made up of small widely spaced leaflets. The inflorescence bears 2 to 7 flowers which are purple, sometimes with paler colored edges on their petals. Each flower is generally less than a centimeter long. The fruit is a crescent shaped legume pod between one and two centimeters long.

Astragalus pomonensis is a species of milkvetch known by the common name Pomona milkvetch. It is native to Baja California and southern California, where it can be found in a number of coastal habitats, including the California Coast Ranges. This is a bushy perennial herb forming a clump of thick, hollow stems up to about 80 centimeters tall. Leaves are up to 20 centimeters long and are made up of many oval-shaped leaflets each up to 3 centimeters in length. The flower cluster is a large array of up to 45 cream-colored flowers. Each flower is between one and two centimeters long. The fruit is a bladdery legume pod which dries to a thin, almost transparent papery texture. It may exceed 4 centimeters in length and generally drops off the plant when dry.

Astragalus preussii (common name - Preuss" milkvetch) is an annual or perennial plant in the legume family (Fabaceae) found in the Colorado Plateau and Canyonlands region of the southwestern United States. :121Growth pattern. It is an annual or perennial plant from 4 to 15 inches (10 to 38 cm) tall, growing upright from a woody base. :121Leaves and stems. It has compound pinnate leaves from 1 1-2 to 15 inches (3. 8 to 38. 1 cm) long, with 7-25 3-4 inch (1. 9 cm), elliptic leaflets. :121Inflorescence and fruit. It blooms from March to June. :121 The inflorescence has 3-22 flowers per stalk, with a small, green, 5-lobed calyx around a tublular set of white to pink to purple petals, 3-4 inch (1. 9 cm) long. :121 When dried, 3-4 inch (1. 9 cm) seed pods are papery or leathery, elliptical, and are either smooth or covered with soft hairs. :121Habitat and range. It only grows in soils containing Selenium. :121Ecological and human interactions. It is named after Charles Preuss. :121

Astragalus pseudiodanthus is a species of milkvetch known by the common name Tonopah milkvetch. It is native to the Great Basin deserts of Nevada and eastern California, such as the Tonopah area, where it grows in sandy habitat. This plant is named for the very similar Astragalus iodanthus, of which it is sometimes treated as a variety. This is a small mat-forming perennial herb extending several stems from a stem base which lies beneath the surface of the sand. The leaves are up to 5 centimeters long and are made up of small crowded leaflets. The inflorescence is a cluster of reddish purple flowers. The fruit is a legume pod up to about 2. 5 centimeters long. It is fleshy when new and dries to a leathery texture.

Astragalus pulsiferae is a species of milkvetch known by the common name Ames' milkvetch. It is native to California and Nevada, and it is known but rare in Washington. It is known from many habitat types, including mountains and plateaus. This is a very small perennial herb forming small mats or patches on the ground. The hairy stems are generally less than 3 centimeters long. The leaves are up to about 5 centimeters long and are made up of several oval shaped leaflets. The inflorescence is an array of 3 to 13 small flowers, each white with purplish veins and tips. This is a very small perennial herb forming small mats or patches on the ground. The hairy stems are generally less than 3 centimeters long. The leaves are up to about 5 centimeters long and are made up of several oval shaped leaflets. The inflorescence is an array of 3 to 13 small flowers, each white with purplish veins and tips. The fruit is a rounded legume pod 1 or 2 centimeters long which dries to a very thin papery texture and has a coat of hairs.