Dalea villosa - (Nutt.) Spreng.
Silky Prairie-clover
Other English Common Names: hairy praire-clover
Other Common Names: silky prairie clover
Taxonomic Status: Accepted
Related ITIS Name(s): Dalea villosa (Nutt.) Spreng. (TSN 26653)
French Common Names: dalée velue
Unique Identifier: ELEMENT_GLOBAL.2.133414
Element Code: PDFAB1A1Q0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Pea Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Fabales Fabaceae Dalea
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Concept Reference
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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.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Dalea villosa
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 16May1989
Global Status Last Changed: 16May1989
Rounded Global Status: G5 - Secure
Nation: United States
National Status: NNR
Nation: Canada
National Status: N2? (26Aug2016)

U.S. & Canada State/Province Status
United States Arkansas (SNR), Colorado (SNR), Iowa (S1), Kansas (SNR), Louisiana (S2), Michigan (SNR), Minnesota (SNR), Missouri (SNR), Montana (S1S2), Nebraska (SNR), New Mexico (SNR), North Dakota (SNR), Oklahoma (SNR), South Dakota (SNR), Texas (SNR), Wisconsin (SNR), Wyoming (S1)
Canada Manitoba (S2S3), Saskatchewan (S1)

Other Statuses

Canadian Species at Risk Act (SARA) Schedule 1/Annexe 1 Status: T (05Jun2003)
Committee on the Status of Endangered Wildlife in Canada (COSEWIC): Special Concern (25Nov2011)
Comments on COSEWIC: A perennial, herbaceous legume that inhabits sand dune landscapes within the prairies of southcentral Saskatchewan and southwestern Manitoba. Threats to the extent and quality of habitat continue, including a lack of fire allowing encroachment of competing vegetation, invasive alien plant species, recreational traffic, sand extraction as well as a general decline in open sandy habitat. However, a larger population size is now known due to greatly increased survey effort, and as a result the level of risk is now thought to be much reduced.
Designated Threatened in April 1998. Status re-examined and confirmed in May 2000. Status re-examined and designated Special Concern in November 2011.

NatureServe Global Conservation Status Factors

Range Extent Comments: Silky prairie clover is a Great Plains species known from Saskatchewan, Manitoba and Wisconsin south to New Mexico, Texas and Oklahoma.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Silky prairie clover is a Great Plains species known from Saskatchewan, Manitoba and Wisconsin south to New Mexico, Texas and Oklahoma.

U.S. States and Canadian Provinces
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States AR, CO, IA, KS, LA, MI, MN, MO, MT, ND, NE, NM, OK, SD, TX, WI, WY
Canada MB, SK

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
AR Miller (05091)
IA Black Hawk (19013), Butler (19023)
LA Bienville (22013), Caddo (22017)
MT Carter (30011), Richland (30083), Sheridan (30091)
WI Buffalo (55011)*, Burnett (55013), La Crosse (55063), Pepin (55091)*, Pierce (55093), Polk (55095), St. Croix (55109), Trempealeau (55121)
WY Goshen (56015), Laramie (56021)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
07 Lower St. Croix (07030005)+, Rush-Vermillion (07040001)+*, Buffalo-Whitewater (07040003)+, Trempealeau (07040005)+, La Crosse-Pine (07040006)+*, Black (07040007)+, Lower Chippewa (07050005)+*, West Fork Cedar (07080204)+, Middle Cedar (07080205)+
10 Big Muddy (10060006)+, Brush Lake closed basin (10060007)+, Lower Yellowstone (10100004)+, O'fallon (10100005)+, Upper Little Missouri (10110201)+, Boxelder (10110202)+, Niobrara Headwaters (10150002)+, Middle North Platte-Scotts Bluff (10180009)+, Horse (10180012)+
11 Saline Bayou (11140208)+, Lower Sulphur (11140302)+, Cross Bayou (11140304)+, Caddo Lake (11140306)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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General Description: Silky Prairie Clover is a perennial herb with ascending or lax, branched stems that are 20-35 cm high sometimes resembling a shrub form, and which arise from red-orange roots and a rootcrown. The alternate, pinnately compound leaves are 2-4 cm long and have 11-21 linear leaflets. The foliage has numerous sunken glands and is densely long and hairy. The pink to rose-purple flowers are densely crowded in cylindrical spikes that are 3-12 cm long, at the ends of stems and branches. Each flower is 4-6 mm long and has 4 separate petals, a densely spreading, hairy, 5-lobed, cup-shaped calyx, and 5 stamens that are usually longer than the petals. The narrowly egg-shaped pods are 2-3 mm long and densely long and hairy.
Diagnostic Characteristics: Other DALEA in Montana usually have <13 leaflets, and are not as conspicuously hairy. The compination of the long, hairy calyx and the 5 stamens further separate this species from other DALEA and from species of PSORALEA and AMORPHA.
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
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  • 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.

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