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

Trifolium willdenovii, Tomcat Clover Trifolium willdenovii, Tomcat Clover Trifolium willdenovii, Tomcat CloverTrifolium willdenovii, Tomcat Clover

Scientific Name: Trifolium willdenovii
Common Name: Tomcat Clover
Also Called:
Family: Fabaceae or Leguminosae Family
Synonyms: (Trifolium tridentatum, Trifolium tridentatum var. aciculare)
Status: Native
Duration: Annual
Size: Up to 8 inches more or less.
Growth Form: Forb/herb; erect, or spreading, more slender and smaller here, more robust in northern climates with increased moisture, glabrous.
Leaves: Green; compound, leaflets mostly linear, toothed.
Flower Color: Purple, purple-pink; 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.
Elevation: Below 5,000 feet.

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

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.

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.

Threatened/Endangered Information: No information available.

Genus Information: More than 150 species in Trifolium in the North America. 20 species in Arizona. Trifolium is a very large genus. The Plant List includes 1,006 scientific plant names of species rank for the genus Trifolium. Of these 245 are accepted species names.

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

Date Profile Completed: 09/10/2015, updated format 10/12/2017
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database and USGS ITIS search
The Plant List (2013). Version 1.1. Published on the Internet; (accessed 09/10/2015).
1993, The Jepson Manual, Citation: (accessed 09/10/2015),4222,4292
Native Plant Information Network, NPIN (2013). Published on the Internet [accessed: 09/10/2015 ]. Lady Bird Johnson Wildflower Center at The University of Texas, Austin, TX.
SEINet for synonyms, scientific names, recorded geographic locations and general information