Home/Species/ Blue Mountain Prairie-clover

Dalea ornata

(Dougl. ex Hook.) Eat. & J. Wright

Blue Mountain Prairie-clover

G4Apparently Secure (G4G5) Found in 6 roadless areas NatureServe Explorer →

G4Apparently SecureGlobal Rank

Least concernIUCN

LowThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.134807

Element CodePDFAB1A150

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

IUCNLeast concern

Endemicendemic to a single nation

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderFabales

FamilyFabaceae

GenusDalea

Other Common Names

Blue Mountain prairie clover (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 Date2023-08-22

Change Date1991-07-22

Edition Date2023-08-22

Edition AuthorsBroaddus, Lynn, rev. D. Gries (1998), rev. C. Nordman (2023).

Threat ImpactLow

Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)

Number of Occurrences81 - 300

Rank Reasons

Blue Mountain Prairie-clover (Dalea ornata) is known from the Great Basin, including southwestern Idaho, Oregon east of the Cascades, to southeastern Washington, Nevada and northeastern California. It is estimated that there are between 81 and 300 occurrences rangewide, and over 100,000 plants. Threats include grazing and invasive exotic plants, including cheatgrass and medusahead.

Range Extent Comments

Blue Mountain Prairie-clover (Dalea ornata) occurs in the Great Basin of the western United States. It occurs from southwestern Idaho, and Oregon east of the Cascades, to southeastern Washington, Nevada, and northeastern California. In California, it occurs in Lassen County, northwest of Shaffer Mountain (Skinner 1997). Range extent was estimated to be 400,000 square kilometers using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1982 and 2023 (CNDDB 2023, GBIF 2023, iNaturalist 2023, Kartesz 1988, SEINet 2023).

Occurrences Comments

By applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1982 and 2023, it is estimated that there are between 81 and 300 occurrences rangewide (CNDDB 2023, GBIF 2023, iNaturalist 2023, SEINet 2023).

Threat Impact Comments

There are threat impacts to Blue Mountain Prairie-clover from grazing and invasive exotic plants, including cheatgrass and medusahead (CNDDB 2023).

Ecology & Habitat

Habitat

Dry sand, shaley barrens, rocky ridges, gullied bluffs, knolls, and canyon washes with Artemisia to yellow pine (Kartesz 1988), at elevations from 90 meters near the Columbia River in Oregon to 2220 meters in Nevada (SEINet 2023).

Terrestrial Habitats

Forest/WoodlandBarrens

Other Nations (1)

United StatesN4

Province	Rank	Native
Oregon	SNR	Yes
Idaho	SNR	Yes
Washington	SNR	Yes
Nevada	S2	Yes
California	S2	Yes

Threat Assessments

Threat	Scope	Severity	Timing
2 - Agriculture & aquaculture	Restricted (11-30%)	Moderate or 11-30% pop. decline	High (continuing)
2.3 - Livestock farming & ranching	Restricted (11-30%)	Moderate or 11-30% pop. decline	High (continuing)
8 - Invasive & other problematic species, genes & diseases	Restricted (11-30%)	Moderate or 11-30% pop. decline	High (continuing)
8.1 - Invasive non-native/alien species/diseases	Restricted (11-30%)	Moderate or 11-30% pop. decline	High (continuing)

Plant Characteristics

DurationPERENNIAL

Economic Value (Genus)No

Roadless Areas (6)

Nevada (3)

Area	Forest	Acres
Chineese Camp (NV)	Humboldt-Toiyabe National Forest	15,207
Pine Grove South	Humboldt-Toiyabe National Forest	88,945
West Walker (NV)	Humboldt-Toiyabe National Forest	5,683

Oregon (3)

Area	Forest	Acres
Lookout Mountain	Ochoco National Forest	14,115
Lord Flat Somers Point	Wallowa-Whitman National Forest	67,738
Snake River	Wallowa-Whitman National Forest	31,229

References (7)

California Natural Diversity Database (CNDDB). 2023. RareFind Version 5.2.14. California Department of Fish and Game, Sacramento.
Global Biodiversity Information Facility (GBIF). 2023. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2023).
iNaturalist. 2023. Online. Available: https://www.inaturalist.org (accessed 2023).
Kartesz, J.T. 1988. A flora of Nevada. Ph.D. dissertation. Univ. of Nevada, Reno. 3 volumes. 1729 pp.
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.
Skinner, M.W., and B.M. Pavlik, eds. 1997 (1994). Inventory of rare and endangered vascular plants of California. 1997 Electronic Inventory Update of 1994 5th edition, California Native Plant Society, Special Publication No. 1, Sacramento.
Southwest Environmental Information Network (SEINet). 2023. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2023).

Dalea ornata

Habitat

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