Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

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

Cirsium ochrocentrum, Yellowspine Thistle

Phacelia tanacetifolia, Lacy Phacelia

Lacy Phacelia has showy flowers ranging from blue to lavender-blue. The flowers are bell-shaped without stems in a scorpioid type flowering stalk. The fruit is a capsule. Phacelia tanacetifoliaLacy Phacelia is a native species to the mostly southwestern United States. It blooms from March to May and perhaps longer when in cultivation. The fruit is a capsule. Phacelia tanacetifolia Lacy Phacelia is a native species that is also called Lacy Scorpion-weed, Facelia and Fiddleneck. The fruit is a capsule. Plants grow in elevations up to 5,000 feet. Phacelia tanacetifoliaLacy Phacelia has mostly compound green leaves with lobed leaflets and stiff-hairs. The genus Phacelia are known to, or thought to attract large numbers of native bees Phacelia tanacetifolia

Scientific Name: Phacelia tanacetifolia
Common Name: Lacy Phacelia
Also Called: Lacy Scorpion-weed, Facelia, Fiddleneck
Family: Hydrophyllaceae (Boraginaceae, Hydrophylloideae), the Waterleaf Family
Synonyms: (Phacelia tanacetifolia subvar. tenuisecta)
Status: Introduced from California.
Duration: Annual
Size: Up to 3 feet or more usually much less.
Growth Form: Forb/herb; stems erect stiff-hairy (hispid)
Leaves: Green; mostly compound, leaflets lobed (see photo above), stiff-hairs.
Flower Color: Blue, lavender-blue; bell-shaped, sessile in scorpioid cyme, fruit a capsule.
Flowering Season: March to May.
Elevation: Up to 5,000 feet.

Habitat Preferences: In California sandy or gravelly slopes and open areas.

Recorded Range: An irregular distribution in the United States where Lacy Phacelia is found in; AZ, CA, KS, MA, ME, MI, NV, OR. Native to California and possibly Arizona. Also native to the eastern ⅔ of Canada; Baja California and possibly northern Mexico.

North America & US County Distribution Map for Phacelia tanacetifolia.

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: In North America there more than 166 species for Phacelia. Worldwide, The Plant List includes 186 accepted species names and a further 184 scientific names of infraspecific rank for the genus.

In the Southwestern United States: Arizona has 49 species of genus, California has 96 species, Nevada has 54 species, New Mexico has 23 species, Texas has 13 species, Utah has 42 species. All data is approximate and subject to taxonomic changes.

Special Value to Native Bees; Species of the genus Phacelia are known to, or thought to attract large numbers of native bees including Yellow Faced Bees, Miner Bees and Mason Bees. This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

Comments: In Southwest Desert Flora also see; Desert Bluebells, Phacelia campanularia, Cleftleaf Wildheliotrope, Phacelia crenulata, Distant Phacelia, Phacelia distans, Fremont's Phacelia, Phacelia fremontii, Varileaf-Phacelia, Phacelia heterophylla and Kaweah River Scorpion-weed, Phacelia magellanica.

Date Profile Completed: 10/07/2105, updated 07/24/2017, updated format 10/12/2017
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database and USGS ITIS search - (accessed 07/22/2017)
The Plant List (2013). Version 1.1. Published on the Internet; (accessed 07/22/2017).
Native Plant Information Network, NPIN (2013). Published on the Internet [accessed: 10/06/2105]. Lady Bird Johnson Wildflower Center at The University of Texas, Austin, TX.
1993, The Jepson Manual, Citation: (accessed 10/06/2105),4587,4703
SEINet for synonyms, scientific names, recorded geographic locations and general information