Astragalus flavus

Astragalus flavus (yellow milkvetch) is a perennial plant in the legume family (Fabaceae) found in the Colorado Plateau and Canyonlands region of the southwestern United States.[1]:97

Astragalus flavus
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Genus: Astragalus
Species:
A. flavus
Binomial name
Astragalus flavus
Torr. & A.Gray

Growth pattern

It is an erect or curving perennial from 2 to 12 inches (5.1 to 30.5 cm) tall.[1]:97 The plant is covered with star-shaped hairs.[1]:97

Patches of the plants in bloom may cover large areas of the ground in yellow from the flowers.[1]:97[2]

Stems and leaves

1 to 6 inches (2.5 to 15.2 cm) leaves are compound pinnate, with linear to egg shaped 14 to 6 inches (0.64 to 15.24 cm) leaflets.[1]:97

Inflorescence and fruit

The inflorescence is born on a stalk with 6-30 flowers having a hairy calyx tube and yellow bell-shaped corolla 14 to 12 inch (0.64 to 1.27 cm) long.[1]:97 "Flavus" means "yellow". It blooms from May to June.[1]:97[3]

Habitat and range

It grows in saline soil (halophyte) in salt desert shrub between about 3,800 to 5,400 feet (1,200 to 1,600 m) in elevation.[1]:97

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References

  1. Canyon Country Wildflowers, Damian Fagan, 2nd ed., 2012, Morris Bush Publishing, LLC. in cooperation with Canyonlands Natural History Association, ISBN 978-0-7627-7013-7
  2. https://plants.usda.gov/core/profile?symbol=ASFL
  3. https://plants.usda.gov/core/profile?symbol=ASFL


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