Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

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

Cirsium ochrocentrum, Yellowspine Thistle

Pectocarya recurvata, Curvenut Combseed

Pectocarya recurvata, Curvenut Combseed, Southwest Desert Flora Pectocarya recurvata, Curvenut Combseed, Southwest Desert Flora Pectocarya recurvata, Curvenut Combseed, Southwest Desert Flora

Scientific Name: Pectocarya recurvata
Common Name: Curvenut Combseed
Also Called: Arched Comb-bur, Arch-nutted Combbur, Comb-bur, Recurve Combseed
Family: Boraginaceae, Forget-Me-Not Family
Synonyms: ()
Status: Native
Duration: Perennial
Size: Up to 8 inches.
Growth Form: Forb/herb; erect or ascending, slender stems and branches, stiff straight, closely appressed hairs or bristles (strigose).
Leaves: Green; stiff hairs, linear, strigose.
Flower Color: White; inconspicuous, fruit with small recurved petiole or stem, fruit a nutlet in divergent pairs, margins with translucent teeth, thus the name Combseed.
Flowering Season: February to April later in California (March to May).
Elevation: Mostly under 5,000 feet.

Habitat Preferences: Dry sandy, gravelly soil, bases of shrubs and roadsides, in Creosote bush communities.

Recorded Range: Native to the southwestern United States; AZ, CA, NM, NV, and UT. Also found in northern Baja California and northwest Mexico. In Arizona, Curvenut Combseed is found in central, southern and northwestern parts of the state.

North America & US County Distribution Map for Pectocarya recurvata.

U.S. Weed Information: No data listed.
Invasive/Noxious Weed Information: No data listed.
Wetland Indicator: No data listed.
Threatened/Endangered Information: No data listed.

Genus Information: 8 species in Pectocarya in southwest and western United States and western Canada in British Columbia. 5 species in Arizona.

Comments: Most species of Pectocarya are early spring bloomers and all look very similar. The type specimen of Pectocarya recurvata is from Chandler, Arizona.

Date Profile Completed: 1/7/2015, 07/20/2015, updated format 10/11/2017
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database – ITIS search
Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles, California.
1993, The Jepson Manual, Citation: ttp:// (accessed 1/7/2015)
SEINet for synonyms, scientific names and recorded geographic locations,