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Conserving and restoring
America's native plants |
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CPC National Collection Plant Profile
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Hemizonia mohavensis
| Family: |
Asteraceae (Sunflower Family) |
| Common Names: |
Mohave tarplant, Mojave tarweed |
| Author: |
Keck |
| Growth
Habit: |
Annual |
| CPC
Number: |
2216 |
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| Primary
custodian for this plant in the CPC National Collection of Endangered
Plants is: |
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Hemizonia mohavensis
|
Hemizonia mohavensis was considered extinct for over 50 years, as historical collections of this plant came from a three locations, including one in the San Jacinto Mountains and another on a sand bar along the Mojave River on the north slope of the San Bernardino Mountains in San Bernardino County, California. All of this original habitat was altered by flood control methods and by off road vehicle activity, and the species disappeared from the records.
The Mohave tarplant was rediscovered in 1994 in the San Jacinto Mountains. Further searching has found a number of other populations on different mountain ranges within California, and this species is now considered stable. (Stephenson 1999)
The species is a sparsely branched, aromatic annual herb with yellow flowers.
| Distribution
& Occurrence |
|
State Range
Habitat
| |
Sandy areas along the Mojave River. |
Distribution
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Has been documented in the San Jacinto Mountain, on Baldy Mountain, Poppet Flat, Palomar Mountains (San Diego County) in the vicinity of Indian Flats and in Chihuahua Valley, north of Warner Springs, and has recently been documented in the Sierra Nevada mountains. (Stephenson 1999) |
Number Left
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Found in a number of locations in California. |
State/Area
Protection
| |
State/Area |
Rank |
Status |
Date |
|
| |
California |
SH |
1 |
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| Conservation,
Ecology & Research |
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Ecological
Relationships
Threats
Current Research Summary
Current Management Summary
Research Management Needs
Ex Situ Needs
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| Books (Single Authors)
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| Skinner, M.W.; Pavlik, B.M. 1997. Inventory of rare and endangered vascular plants of California: Electronic Inventory Update of 1994, 5th edition. Sacramento: California Native Plant Society. |
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| Books (Sections)
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| Kartesz, J.T. 1999. A synonymized checklist of the vascular flora of the U.S., Canada, and Greenland. In: Kartesz, J.T.; Meacham, C.A., editors. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden. Chapel Hill, NC. |
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| Journal Articles
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| Baldwin, B.G. 1999. New combinations and new genera in the North American tarweeds (Compositae-Madiinae). Novon. 9, 4: 462-471. |
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| Sanders, A.C.; Banks, D.L.; Boyd, S. 1997. Rediscovery of Hemizonia mohavensis (Asteraceae) and addition of two new localities. Madrono. 44, 2: 197-200. |
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| Reports
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| Dudek & Associates, Inc. 1999. Western Riverside County Multiple Species Habitat Conservation Plan (MSHCP) (Riverside County Integrated Plan (RCIP)) ôDraft Proposalö. Riverside, CA: County of Riverside Transportation and Land Management Agency. p.165. Draft Proposal. |
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| Sanguamphai. 1989. 1988 Annual Report on the Status of California's State Listed Threatened and Endangered Plants and Animals. State of California, Department of Fish and Game. |
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| Stephenson, John R.; Calcarone, Gena M. 1999. Southern California Mountains and Foothills Assessment: Habitat and Species Conservation Issues. Chapter 5 - Potentially Vulnerable Species: Plants. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. p.402. General Technical report PSW-GTR-172. |
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