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.
- Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
Global Range: Utah and northern Arizona (46,000 sq. km.) on the Colorado Plateau with extension to the eastern Great Basin into Nevada.
Catalog Number: US 1487743
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): W. Stanton
Year Collected: 1930
Locality: Desert S of Hawksville., Wayne, Utah, United States, North America
- Holotype: Blake, S. F. 1931. J. Wash. Acad. Sci. 21: 333.
Comments: Sand dunes and swales between 1,200 and 2,000 m. elev.; under sand dune agriculture in southern part of its range.
Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 21 - 80
Comments: Monument Valley and Hopi Ind. Res. in Navajo Co., Beaver Dam in Mohave Co., Arizona; ten counties in Utah.
National NatureServe Conservation Status
Rounded National Status Rank: N3 - Vulnerable
NatureServe Conservation Status
Rounded Global Status Rank: G3 - Vulnerable
Reasons: Colorado Plateau and Great Basin, widespread, but often in low numbers at particular sites.
Comments: Modernization and mechanization of agricultural practices; total abandonment of agricultural fields; road construction.
Biological Research Needs: Habitat requirements and population biology; overcome difficulties in germinating wild seed.
Names and Taxonomy
Comments: Considered a distinct species from Helianthus deserticola by Kartesz in the 1994 checklist, but his 1999 floristic synthesis includes H. deserticola in H. anomalus. Utah Heritage Program also treats H. anomalus more broadly, including H. deserticola in their concept of H. anomalus. Per Jim Morefield, molecular studies indicate that the two taxa are distinct, but per Cronquist (1994) they are not otherwise distinguishable.