Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

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

Cirsium ochrocentrum, Yellowspine Thistle

Baileya pleniradiata, Woolly Desert Marigold

Baileya pleniradiata, Woolly Desert Marigold, Southwest Desert FloraBaileya pleniradiata, Woolly Desert Marigold, Southwest Desert Flora    Baileya pleniradiata, Woolly Desert Marigold, Southwest Desert Flora Baileya pleniradiata, Woolly Desert Marigold, Southwest Desert Flora    Baileya pleniradiata, Woolly Desert Marigold, Southwest Desert Flora

Scientific Name: Baileya pleniradiata
Common Name: Woolly Desert Marigold
Also Called: Desertmarigold Baileya, Woolly Desert-marigold
Family: Asteraceae, Sunflower Family
Synonyms: (Baileya multiradiata var. pleniradiata, Baileya perennis)
Status: Native
Duration: Annual, biennial or short-lived perennial.
Size: Up to 18 inches more or less.
Growth Form: Forb/herb forms clumps of gray woolly plants covered with dense, fine grayish-white hairs, (tomentose) branching at base.
Leaves: Greenish-gray or silvery-green leaves; mostly basal and on lower stems, woolly or canescent; pinnately lobed, up to 3.5 inches; leaves often withering at bloom.
Flower Color: Bright yellow; flower heads solitary; showy, up to 2 inches, radiate heads; flowering stalks mostly naked; 1 to 4 inches long; ray flowers about 50, disk florets numerous; fruit is an achene.
Flowering Season: February to November.
Elevation: 200 to 6,000 feet.

Habitat Preferences: Open sunny areas, plains, mesas, hillsides, roadsides, sandy and gravelly washes.

Recorded Range: Woolly Desert Marigold is found in the southwest United States in AZ, CA, NM, NV and UT, and in northern Baja California and northwest Mexico. It is found throughout most of Arizona.

North America & US County Distribution Map for Baileya pleniradiata.

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

Genus Information: In North America there are 3 species and 3 accepted taxa overall for Baileya. Worldwide, The Plant List includes 3 accepted species names with 8 infraspecific rank for the genus.

In the Southwestern United States, Arizona there are 3 species of , in California there are 3 species, Nevada has 2 species, New Mexico has 2 species, Texas has 1 species, Utah has 3 species. All data is approximate and subject to taxonomic changes.

Comments: Woolly Desert Marigold is a yellow, showy daisy-like flower throughout much of Arizona but more common in the southern part of the state. It is very similar and somewhat difficult to distinguish from its closely related sister Desert Marigold, Baileya multiradiata, Woolly Desert Marigold however has shorter, more oval ray flowers and fewer disk flowers. According to Flora of North America, both species can be observed in the area and hybrids have not been recorded. I have also observed this to be the case.

In Southwestern Desert Flora also see Woolly Desert Marigold, Baileya multiradiata and Yellowdome, Trichoptilium incisum.

Date Profile Completed: 9/24/2012; Updated, 07/25/2015, updated 04/05/2017, updated format 10/09/2017
References:
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database
Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles
The Jepson Manual, Citation: http://ucjeps.berkeley.edu/interchange/I_treat_indexes.html Mon Sep 24 14:30:00 2012
M. W. Turner, FNA | Family List | FNA Vol. 21 | Asteraceae | Baileya, Flora of North America Editorial Committee, eds. 1993+. Flora of North America North of Mexico. 16+ vols. New York and Oxford.
SEINet for synonyms, scientific names and recorded geographic locations, http://swbiodiversity.org/seinet/