Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

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

Cirsium ochrocentrum, Yellowspine Thistle

Phacelia magellanica, Kaweah River Scorpion-weed

Scientific Name: Phacelia magellanica
Common Name: Kaweah River Scorpion-weed
Also Called: Kaweah River Phacelia
Family: Hydrophyllaceae (Boraginaceae, Hydrophylloideae), the Waterleaf Family
Synonyms: (Phacelia egena)
Status: Native
Duration: Biennial, perennial; erect or ascending, stiff-hairy (hispid).
Size: Up to 1 ½ feet, usually less.
Growth Form: Forb/herb;
Leaves: Green; basal and cauline with petiole, basal leaves oblanceolate or lance shaped (lanceolate), upper cauline leaves un-divided (entire).
Flower Color: White, cream; flowers several bell-shaped, both stamens and style exserted, inflorescence a one-side cyme, fruit a capsule, also stiff-hairy.
Flowering Season: April to October.
Elevation: 3,000 to 9,500 feet.
Habitat Preferences: Multiple habitat types, Pinyon-juniper and coniferous communities, found in moist areas and along streams.
Recorded Range: In the United States Kaweah River Scorpion-weed is found in primarily in the west in AZ, CA and a small population in southern OR. In Arizona is will be found throughout much of the states with few records in La-Paz and Yuma Counties. It is also native to Central and South America and Alberta and British Columbia, Canada.

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: Over 150 species in Phacelia in the United States and all of North America and northern Mexico. An additional 20 or so species are native to South America. The genus Phacelia collectively are commonly referred to as; Phacelia, Scorpionweed, Heliotrope.

The Plant List includes 368 scientific plant names of species rank for the genus Phacelia. Of these 186 are accepted species names.

Comments: Kaweah River Scorpion-weed is similar to Varileaf Phacelia.

In Southwest Desert Flora also see Desert Bluebells, Phacelia campanularia; Cleftleaf Wildheliotrope, Phacelia crenulata; Distant Phacelia, Phacelia distans; Varileaf Phacelia, Phacelia heterophylla and Lacy Phacelia, Phacelia tanacetifolia.

Date Profile Completed: 10/07/2105
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database and USGS ITIS search, as Phacelia egena.
Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles, California.
The Plant List (2013). Version 1.1. Published on the Internet; (accessed 10/03/2015).
1993, The Jepson Manual, Citation: (accessed 10/07/2105),4587,4624
The Plant List (2013). Version 1.1. Published on the Internet; (accessed 10/03/2015).
SEINet for synonyms, scientific names, recorded geographic locations and general information
Wikipedia contributors, 'Phacelia egena', Wikipedia, The Free Encyclopedia, 2 December 2014, 05:58 UTC, [accessed 7 October 2015]