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Dwarf White Milkvetch
Astragalus didymocarpus
  


About Dwarf White Milkvetch (Astragalus didymocarpus) Astragalus didymocarpus is a species of milkvetch known by the common names dwarf white milkvetch and two-seeded milkvetch. It is native to the southwestern United States and northern Mexico, where it can be found in many types of habitat. Astragalus didymocarpus is a slender, hairy annual herb growing erect to about 30 centimeters tall, drooping, or flat on the ground in a spreading clump. The leaves are up to 7 or 8 centimeters long and are made up of narrow to oblong leaflets. The inflorescence is a cluster of up to 30 purple-tinted white flowers, each under a centimeter long. The inflorescence is covered in long black and white hairs. Astragalus didymocarpus is a slender, hairy annual herb growing erect to about 30 centimeters tall, drooping, or flat on the ground in a spreading clump. The leaves are up to 7 or 8 centimeters long and are made up of narrow to oblong leaflets. The inflorescence is a cluster of up to 30 purple-tinted white flowers, each under a centimeter long. The inflorescence is covered in long black and white hairs. The fruit is a small, spherical legume pod a few millimeters wide which dries to a stiff papery texture. Varieties: There are several varieties of Astragalus didymocarpus: A. d. var. didymocarpus - erect herb found in western Nevada and much of California, A. d. var. dispermus - prostrate form native to the desert regions, A. d. var. milesianus (Miles' milkvetch) - rare variety found only along the Central Coast of CaliforniaA. d. var. obispoensis - form with ascending stems native to coastal southern California and Baja California
Plant Description
Plant Type
Annual herb

Max. Height
1 - 11.8 in (2.5 - 30 cm)

Flower Color
Yellow, White, Purple

Native Status
Native

Natural Setting
Elevation ?
-247' - 5258'

Annual Precip. ?
3.0" - 51.2"

Summer Precip. ?
0.13" - 2.54"

Coldest Month ?
38.5° F - 60.2° F

Hottest Month ?
61.8° F - 89.3° F

Humidity ?
0.80 vpd - 40.70 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Two-seeded Milkvetch



Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora


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