Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

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

Cirsium ochrocentrum, Yellowspine Thistle

Trifolium willdenovii, Tomcat Clover

Tomcat Clover flowers are purple and purple pink. The flowering stem has head-like glowers, small but showy. Trifolium willdenovii Tomcat Clover has green compound leaves withy mostly linear and toothed leaflets. The stems are erect or spreading. They are more slender and smaller in southern areas. Trifolium willdenovii Tomcat Clover is found in the west, primarily the coastal states and in AZ, CA, ID, OR, TX, WA and British Columbia, Canada. They are also native to Baja California, Mexico and south to South America. Trifolium willdenoviiTomcat Clover blooms from April to June, earlier (April) in the southern part of the state, May to June in California. Also called Sand Clover, this species prefers disturbed areas with moisture, heavy soils. Trifolium willdenovii
Scientific Name: Trifolium willdenovii
Common Name: Tomcat Clover

Also Called: Sand Clover, Springbank Clover

Family: Fabaceae or Leguminosae Family

Synonyms: (Trifolium tridentatum, Trifolium tridentatum var. aciculare, Trifolium tridentatum var. clivorum, Trifolium willdenowii)

Status: Native

Duration: Annual

Size: Up to 8 inches (20 cm) more or less.

Growth Form: Forb/herb; stems erect, or spreading, more slender and smaller in southern areas, more robust in northern climates with increased moisture, glabrous.

Leaves: Green; compound, leaflets mostly linear, toothed.

Flower Color: Purple, purple-pink; inflorescence head-like flowers, small but showy, fruit a legume, 1 or 2 seeds.

Flowering Season: April to June, blooms earlier (April) in the southern part of the state, May to June in California.

Elevation: Below 5,000 feet (1524 m)

Habitat Preferences: More common in northern elevations, disturbed areas with moisture, heavy soils.

Recorded Range: In North America, Tomcat Clover is found in the west, primarily the coastal states and in Arizona and Idaho; AZ, CA, ID, OR, TX, WA and British Columbia, Canada. In Arizona it is found in the central and southern parts of the state. They are also native to Baja California, Mexico and south to South America.

North America & US County Distribution Map for Trifolium willdenovii.

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

Wetland Indicator: In North America Trifolium willdenovii has the following wetland designations;
Arid West, FACW; Western Mountains, Valleys and Coast, FACU
FACW, Facultative Wetland, usually occur in wetlands, but may occur in non-wetlands
FACU, Facultative Upland, usually occur in non-wetlands, but may occur in wetlands.

Genus Information: In North America there are 172 species for Trifolium. Worldwide, The Plant List includes 244 accepted species names and as many names of infraspecific rank for the genus.

In the Southwestern United States: Arizona has 20 species of Trifolium genus, California has 60 species, Nevada has 21 species, New Mexico has 19 species, Texas has 15 species, Utah has 18 species. All data approximate and subject to revision.

Comments: The photo above was taken April 06, 2011 (about 3,500 feet (1066 m)) near Sycamore Creek west of Mount Ord, Tonto National Forest, Arizona.

In Southwest Desert Flora also see Pinpoint Clover, Trifolium gracilentum.

Etymology:
The genus Trifolium is from the Latin meaning "three-leaved". The genus Trifolium was published by Carl Linnaeus in 1753.
The species epithet willdenovii is named in honor of Carl Ludwig Willdenow (1765-1812) eminent German botanist and taxonomist.

Ethnobotany
No information available

Date Profile Completed: 09/10/2015, updated 11/21/2019
References:
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database and USGS ITIS search - (accessed 11/20/2019)
https://plants.usda.gov/java/stateSearch for genus Trifolium.
The Plant List (2013). Version 1.1. Published on the Internet; http://www.theplantlist.org/ (accessed 11/09/2019).
http://www.theplantlist.org/1.1/browse/A/Leguminosae/Trifolium/
Michael A. Vincent & Duane Isely 2012, Trifolium willdenovii, in Jepson Flora Project (eds.) Jepson eFlora,
http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=47186, accessed on November 21, 2019.
Native Plant Information Network, NPIN (2013). Published on the Internet http://www.wildflower.org/plants/ [accessed: 11/21/2019 ]. Lady Bird Johnson Wildflower Center at The University of Texas, Austin, TX.
https://www.wildflower.org/plants/result.php?id_plant=TRWI3
check authors; Burke Museum of Natural History and Culture, Vascular Plants » Dicots » Fabaceae » Trifolium: Trifolium willdenovii, University of Washington Burke Museum (ROWO) - (accessed 11/21/2019)
http://biology.burke.washington.edu/herbarium/imagecollection/taxon.php?Taxon=Trifolium%20willdenovii
SEINet for synonyms, scientific names, recorded geographic locations and 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 11/20/2019)
http://www.calflora.net/botanicalnames/pageT.html
http://www.calflora.net/botanicalnames/pageW.html