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Home/Species/ Glenwood Milkvetch

Astragalus loanus

Barneby

Glenwood Milkvetch

G1Critically Imperiled Found in 3 roadless areas NatureServe Explorer →
G1Critically ImperiledGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.158742
Element CodePDFAB0F4X0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderFabales
FamilyFabaceae
GenusAstragalus
Other Common Names
Glenwood milkvetch (EN)
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 Method Rank calculation - Biotics v2
Review Date2022-04-04
Change Date1991-07-19
Edition Date2022-04-04
Edition AuthorsNiese, J. (1988), rev. B. Franklin (1996), rev. A. Treher (2011, 2022)
Threat ImpactUnknown
Range Extent<100 square km (less than about 40 square miles)
Number of Occurrences1 - 5
Rank Reasons
Astragalus loanus occurs in the southwestern United States where it is restricted to volcanic gravels in central Sevier County, Utah. There are two occurrences that have been seen since 1984 and an additional four occurrences last seen in the 1970's. There is an incomplete understanding of this species current distribution, threats, population sizes and trend.
Range Extent Comments
Astragalus loanus is endemic to central Sevier County, Utah in the southwestern United States. Range extent was calculated with occurrences last documented after 1984. If all occurrences are included, range extent is 201 sq km.
Occurrences Comments
There are two occurrences seen after 1984. One of those was last seen in 2006. There are four additional occurrences last seen in the 1970's.
Threat Impact Comments
Threats to this species are largely unknown. However, one occurrence is on private land with oil and gas drilling.
Ecology & Habitat

Diagnostic Characteristics

A. welshii is similar but grows at higher elevations and has longer leaves and more numerous (5-11 vs. 3-5), narrower leaflets.

Habitat

Volcanic gravels at 1650-2075 m elevation in sagebrush and pinyon-juniper communities.
Terrestrial Habitats
Forest/WoodlandWoodland - ConiferShrubland/chaparral
Other Nations (1)
United StatesN1
ProvinceRankNative
UtahS1Yes
Threat Assessments
ThreatScopeSeverityTiming
2 - Agriculture & aquacultureUnknownUnknownHigh (continuing)
2.3 - Livestock farming & ranchingUnknownUnknownHigh (continuing)
2.3.4 - Scale unknown/unrecordedUnknownUnknownHigh (continuing)

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Plant Characteristics
DurationPERENNIAL, Long-lived
Economic Value (Genus)Yes
Roadless Areas (3)
Utah (3)
AreaForestAcres
Fishlake MountainFishlake National Forest25,217
Little CreekFishlake National Forest11,479
Signal PeakFishlake National Forest30,889
References (4)
  1. Barneby, R.C. 1989. Fabales. In A. Cronquist, A.H. Holmgren, N.H. Holmgren, J.L. Reveal, and P.K. Holmgren (eds.). Intermountain flora: Vascular plants of the Intermountain West, U.S.A. Vol. 3, Part B. New York Botanical Garden, Bronx. 279 pp.
  2. 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.
  3. Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins (eds.) 1993. A Utah flora. 2nd edition. Brigham Young Univ., Provo, Utah. 986 pp.
  4. Welsh, S.L., N.D. Atwood, S. Goodrich and L.C. Higgins. (Eds.) 2008. A Utah Flora. 4th edition, revised. Brigham Young University, Provo, Utah, U.S.A. 1019 pp.