Roadless Areas
Home/Species/ San Bernardino Milkvetch

Astragalus bernardinus

M.E. Jones

San Bernardino Milkvetch

G3Vulnerable Found in 2 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
MediumThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.155350
Element CodePDFAB0F190
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderFabales
FamilyFabaceae
GenusAstragalus
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank MethodLegacy Rank calculation - Excel v3.1x
Review Date2016-03-21
Change Date2016-03-21
Edition Date2016-03-21
Edition AuthorsBroaddus, Lynn (1991), rev. J. Beckman (6/96), rev. Bittman and Treher (2016)
Threat ImpactMedium
Range Extent5000-20,000 square km (about 2000-8000 square miles)
Number of Occurrences21 - 80
Rank Reasons
Occurs in southern California. Forty-two occurrences that occur on private and public lands. Threats include mining, grazing, development, and recreation.
Range Extent Comments
South and southeast Mojave desert from the eastern slope of the San Bernardino Mountains to Pinto Basin, Riverside County, California. New York and Ivanpah Mountains, California. Reported but unconfirmed from southern Nevada (Munz 1959). Kartesz (1988) mentions only one questionable record from Clark County, Nevada.
Occurrences Comments
Forty-two occurrences.
Threat Impact Comments
Some threats might be mining, grazing, development, and recreation. However, many occurrences are in Joshua Tree National Monument where it would be protected from these threats.
Ecology & Habitat

Habitat

Stony washes and dry mesas, often scrambling up through low bushes, 3000-6700 feet on granite or limestone Joshua tree and pinyon-juniper woods (Munz 1959). Gravelly washes and rocky mesas, in granitic rock or rarely calcareous soils, commonly entangled in low shrubs (Barneby, 1964).
Terrestrial Habitats
Woodland - ConiferWoodland - MixedDesert
Other Nations (1)
United StatesN3
ProvinceRankNative
CaliforniaS3Yes
Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)Yes
Roadless Areas (2)
California (2)
AreaForestAcres
Granite PeakSan Bernardino National Forest450
Heartbreak RidgeSan Bernardino National Forest4,455
References (4)
  1. Barneby, R.C. 1964. Atlas of North American Astragalus. 2 Vols. New York Botanical Garden, Bronx, New York. 1188 pp.
  2. Kartesz, J.T. 1988. A flora of Nevada. Ph.D. dissertation. Univ. of Nevada, Reno. 3 volumes. 1729 pp.
  3. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  4. Munz, P.A., with D.D. Keck. 1959. A California flora. Univ. California Press, Berkeley. 1681 pp.