Astragalus calycosus

[Weiser]

A striking matted milkvech from the Great Basin and Desert Southwest, Astragalus calycosus grows at elevations of 3000'-8000' (915-2438m). There are three varieties listed for the species Astragalus calycosus var. calycosus, var. monophyllidius, and var. scaposus. Flowers colors range from white/cream, through pink and purple.
The variety I am familiar with is Astragalus calycosus var. calycosus. I have not yet had the opportunity to grow this one but have hopes of finding seed one day.

http://www.swcoloradowildflowers.com/Blue%20Purple%20Enlarged%20Photo%20Pages/astragalus%20calycosus.htm
http://plants.usda.gov/java/profile?symbol=ASCA9
http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=812
http://calphotos.berkeley.edu/cgi-bin/img_query?rel-taxon=contains&where-taxon=Astragalus+calycosus+var.+calycosus
http://calphotos.berkeley.edu/cgi/img_query?stat=BROWSE_IMG&query_src=photos_browseimgs_plant_sci&where-genre=Plant&where-taxon=Astragalus+calycosus+var.+monophyllidius&title_tag=Astragalus+calycosus+var.+monophyllidius
http://www.swcoloradowildflowers.com/Blue%20Purple%20Enlarged%20Photo%20Pages/astragalus%20calycosus.htm