Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

Home to the plants of the Sonoran, Chihuahuan and Mojave Deserts

Cirsium ochrocentrum, Yellowspine Thistle

Dalea mollissima, Soft Prairie Clover

Dalea mollissima, Soft Prairie Clover, Southwest Desert Flora Dalea mollissima, Soft Prairie Clover, Southwest Desert Flora Dalea mollissima, Soft Prairie Clover, Southwest Desert Flora Dalea mollissima, Soft Prairie Clover, Southwest Desert Flora Dalea mollissima, Soft Prairie Clover, Southwest Desert Flora

Scientific Name: Dalea mollissima
Common Name: Soft Prairie Clover

Also Called: Downy Dalea, Hairy Dalea, Soft Prairie-Clover, Silk Dalea

Family: Fabaceae or Leguminosae Family

Synonyms: (Dalea mollis var. mollissima, Dalea neomexicana subsp. mollissima)

Status: Native.

Duration: Annual or perennial.

Size: Up to 1 foot (.3 m) low-growing, mat forming.

Growth Form: Whiteflower Prairie is a forb/herb; sprawling, mat-forming, patches, plants with soft hairy pubescence; plants upright (erect) or low-growing.

Leaves: Whiteflower Prairie has green or grayish-green; the fuzzy leaves are heavily gland-dotted, hairy; compound leaves, leaflets rounded, folded with leaf tips shallowly lobed and wavy (see photo above).

Flower Color: Whiteflower Prairie flowers are whitish or cream to red, purple or lavender; flowers typical pea-like flowers; flowers soft hairy; the fruit is a 1-seeded pod.

Flowering Season: January or December to May.

Elevation: Up to 3,000 feet (914 m).

Habitat Preferences: Sandy deserts, washes, desert chaparral, dry grassland, desert flats and mountainous areas in the Mojave and Sonoran Deserts.

Recorded Range: Dalea mollisima is relatively rare in the United States where it is native to AZ, CA and NV. In Arizona it occurs in the central and southwestern parts of the state; in CA and NV it is found in the southeast corners of the state.

North America & US County Distribution Map for Dalea mollissima.

North America species range map for Soft Prairie Clover, Dalea mollissima:

North America species range map for Soft Prairie Clover, Dalea mollissima:
Click image for full size map.

U.S. Weed Information: No information available.
Invasive/Noxious Weed Information: No information available.
Wetland Indicator: No information available.
Threatened/Endangered Information: No information available.

Genus Information: In North America, USDA Plants Database lists 108 native species for Dalea; Worldwide, World Flora Online includes 223 accepted species names for the genus and The Plant List shows 233 records for Dalea including varieties.

The genus Dalea was published in 1758 by Carl Linnaeus, (1707-1778).

Members of the genus Dalea are known collectively as the Prairie Clovers and Indigo Bush.

In the Southwestern United States: Arizona has 32 species of genus, California, Nevada and Utah each have 4 species, New Mexico has 29 species and Texas has 36 species. Data approximate, subject to revision.

Comments: Soft Prairie Clover is similar in appearance to Dalea mollis, but the pubescence of Soft Prairie Clover has thinner, downier hairs.

Also see in Southwest Desert Flora; Whiteflower Prairie Clover, Dalea albiflora and Indigobush, Dalea formosa.

Importance to Wildlife, Birds and Livestock
Soft Prairie Clover, Dalea mollissima has attractive flowers, the flowers and their seeds may be visited by hummingbirds and/or small mammals including rodents and granivorous birds in search of nectar or food.

Beneficial Value to Butterflies, Honey Bees and Insects
Soft Prairie Clover, Dalea mollissima has attractive flowers, the flowers and their plants may be visited by butterflies, moths, flies, honeybees, Native Bees and other insects in search of food and nectar.

Etymology:
The genus “Dalea” (Da'lea:) was named in honor of Samuel Dale, (1659-1739).

The genus Dalea was published in 1758 by Carl Linnaeus, (1707-1778).

The species epithet mollissima (mollis'sima:) means very soft, a reference to the fine hairs on the leaves.

The species taxon Dalea mollissima was described in 1958 by Per Axel Rydberg, (1860-1931).

Date Profile Completed: 08/20/2015, updated 01/19/2022
References and additional information:
Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles, California as Dalea neomexicana subsp. mollissima.
Plants.USDA.gov; Department of Agriculture, Natural Resources Conservation Service on-line database and USGS ITIS search; accessed accessed on-line 01/14, 25/2022.
https://plants.usda.gov/home/basicSearchResults?resultId=bb932184-2e08-408d-bb1c-3eb49d4664e8
https://plants.usda.gov/home/plantProfile?symbol=DAMO2
World Flora Online; A Project of the World Flora Online Consortium; An Online Flora of All Known Plants - (accessed on-line 01/19/2022)
http://www.worldfloraonline.org/search?query=dalea The Plant List (2013). Version 1.1. Published on the Internet; http://www.theplantlist.org/ (accessed on-line 01/19/2022).
http://www.theplantlist.org/tpl1.1/search?q=dalea
Native Plant Information Network, NPIN. Published on the Internet http://www.wildflower.org/plants/; accessed 01/25/2022. Lady Bird Johnson Wildflower Center at The University of Texas, Austin, TX.
https://www.wildflower.org/plants/result.php?id_plant=DAMO2
Jepson 2012, Kearney and Peebles 1969; Editor: L.Crumbacher2012; from SEINet Field Guide, on-line; accessed 01/25/2022.
https://swbiodiversity.org/seinet/taxa/index.php?taxon=1555&clid=10#
Wikipedia contributors. "Dalea mollissima." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 15 Dec. 2021. Web. 25 Jan. 2022.
Michelle M. McMahon & Duane Isely 2012, Dalea mollissima, in Jepson Flora Project (eds.) Jepson eFlora,
https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=22268, accessed on January 25, 2022.
Seiler, John, Peterson, John, North American species range map courtesy of Virginia Tech, Dept. of Forest Resources & Environmental Conservation
http://dendro.cnre.vt.edu/dendrology/
SEINet synonyms, scientific names, geographic locations, general information.
http://swbiodiversity.org/seinet/
Etymology: Michael L. Charters California Plant Names: Latin and Greek Meanings and Derivations; A Dictionary of Botanical and Biographical Etymology - (accessed 01/19/2022)
http://www.calflora.net/botanicalnames/pageD.html
http://www.calflora.net/botanicalnames/pageMI-MY.html
IPNI (2020). International Plant Names Index. Published on the Internet http://www.ipni.org, The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens. [Retrieved 14 January 2022].
https://www.ipni.org/?q=Dalea%20mollissima