Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

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

Cirsium ochrocentrum, Yellowspine Thistle

Desmodium batocaulon, San Pedro Ticktrefoil

Desmodium batocaulon, San Pedro Ticktrefoil, Southwest Desert Flora Desmodium batocaulon, San Pedro Ticktrefoil, Southwest Desert Flora Desmodium batocaulon, San Pedro Ticktrefoil, Southwest Desert Flora Desmodium batocaulon, San Pedro Ticktrefoil, Southwest Desert Flora

Scientific Name: Desmodium batocaulon
Common Name: San Pedro Ticktrefoil
Also Called: Bushy Tick Clover, San Pedro Tick Trefoil, Tick Clover
Family: Fabaceae or Leguminosae Family
Synonyms: (Meibomia batocaulis)
Status: Native
Duration: Perennial
Size: Low growing sprawling species.
Growth Form: Forb/herb; taproot; stems from woody crown, erect, spreading or decumbent, trailing.
Leaves: Green, light green blotch around prominent midrib surrounded by darker green blotch; alternate, trifoliate, shape variable lanceolate to ovate, petiolate.
Flower Color: Blue, lavender, purple or violet; on the small size but still quite showy, zygomorphic, legume fruit pod is sparsely pubescent or glabrous, constricted (lomentum see photo above.
Flowering Season: June to September, blooms following summer monsoons.
Elevation: 3,000 to 6,500 feet.

Habitat Preferences: Mid- to upper-elevations, common in pine woods.

Recorded Range: Desmodium batocaulon in found in AZ, NM and possible TX (1892. Bulletin of the Torrey Botanical Club). It is also native to northern and parts of central Mexico.

North America & US County Distribution Map for Desmodium batocaulon.

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: More than 75 species in Desmodium in the United States, Canada and Mexico. Desmodium in for in the eastern half of the United States and Canada and Arizona (Maricopa and Pima Counties) represents the western most location of this species. Approximately 14 species in Arizona. In Arizona Desmodium batocaulon is found in the central and southern portions of the state with few records in Pinal County.

The Plant List includes 326 accepted species names for Desmodium.

Comments: Desmodium as a whole are referred to as the Tick-clovers and less commonly as Beggar-ticks which are much more commonly applied to the genus Bidens. The Type specimen of Desmodium batocaulon is from the San Pedro River (Charles Wright (1811-1885, American botanist).

San Pedro Ticktrefoil is found at middle to upper elevations.

Date Profile Completed: 08/21/2015, updated format 10/12/2017
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database and USGS ITIS search
Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles, California.
The Plant List (2010). Version 1. Published on the Internet; (accessed 08/21/2015).
Encyclopedia of Life (eol), Dr. David Bogle, Desmodium batocaulon, San Pedro Ticktrefoil, USDA NRCS PLANTS Database (accessed 08/20/2015)
Wikipedia contributors, 'Loment', Wikipedia, The Free Encyclopedia, 15 March 2013, 11:55 UTC, [accessed 21 August 2015]
SEINet for synonyms, scientific names, recorded geographic locations and general information