Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

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

Cirsium ochrocentrum, Yellowspine Thistle

Trichostema arizonicum, Arizona Bluecurls

Scientific Name: Trichostema arizonicum
Common Name: Arizona Bluecurls
Also Called: Arizona Blue-curls
Family: Lamiaceae or Mint Family
Synonyms: ()
Status: Native
Duration: Perennial
Size: Up to 2 feet more or less.
Growth Form: Subshrub; semi- woody or suffrutescent.
Leaves: Green; opposite, oval to ovate, upper leaves reduced, bractlike.
Flower Color: Lavender or violet and white; dramatic curling flowers, lower lip lavender or purple, other petals white, 1 to 7 flowers, corolla 7 to 14 mm long, inflorescence a narrow panicle, stamens strongly arched (see photo above) 10 to 25mm long.
Flowering Season: July to October.
Elevation: 3,500 to 6,000 feet.

Habitat Preferences: Mid- to upper-elevations, rocky slopes, roadsides and open sandy areas.

Recorded Range: Arizona Bluecurls is relatively rare in the United States where it is native to Arizona, New Mexico and marginally in Texas. In Arizona it is found in the southern part of the state in Cochise, Graham, Pima and Santa Cruz Counties. In New Mexico in is found in the southwest part of the state in Grant and Hildago Counties and in the northwest corner in San Juan County. Trichostema arizonicum is also native to northern Mexico.

North America & Counties Distribution Map for Trichostema arizonicum.

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: 16 species in Trichostema throughout much of North America. Few or no records in CO, MT, UT and WY and in central Canada (AB, SK and MB).

3 species in Arizona, 11 species in California and 2 species in New Mexico.

The Plant List includes 23 scientific plant names of species rank for the genus Trichostema. Of these *18 are accepted species names. *This data is currently under review by the The Plant List.

Comments: The type species for Trichostema arizonicum from the Chiricahua Mountains (Wright 1541), Arizona.

Date Profile Completed: 10/24/2015, updated format 09/27/2017
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.
Wikipedia contributors, 'Trichostema arizonicum', Wikipedia, The Free Encyclopedia, 9 April 2015, 17:48 UTC, [accessed 24 October 2015]
The Plant List Published on the Internet; (accessed 10/24/2015).
Vascular Plants of the Gila Wilderness (accessed 10/24/2015)
SEINet for synonyms, scientific names, recorded geographic locations and general information