Regularity: Regularly occurring
Localities documented in Tropicos sources
United States (North America)
Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
- Flora of North America Editorial Committee, e. 1997. Magnoliidae and Hamamelidae. 3: i–xxiii, 1–590. In Fl. N. Amer. Oxford University Press, New York. http://www.tropicos.org/Reference/24627
Global Range: North wall of Grand Canyon, Coconino County, Arizona.
Comments: Rocky, steep slopes in pine forests and on north and south walls of canyons. 1000-2000 m elevation.
Life History and Behavior
National NatureServe Conservation Status
Rounded National Status Rank: N1 - Critically Imperiled
NatureServe Conservation Status
Rounded Global Status Rank: G1 - Critically Imperiled
Reasons: Known only from the north wall of the Grand Canyon in Arizona.
Comments: Possible threats from trampling by hikers from trail.
Names and Taxonomy
Comments: A distinct species in a genus of about 30 species in North and South America.
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