CPC National Collection Plant Profile
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CPC National Collection Plant Profile
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Dudleya nesiotica
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Dudleya nesiotica is Not Sponsored |
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Primary
custodian for this plant in the CPC National Collection of Endangered
Plants is: |
Dieter Wilken, Ph.D. contributed to this Plant Profile. |
| Dudleya nesiotica | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Santa Cruz Island liveforever occupies an area of about 13 hectares (32 acres) on the west end of Santa Cruz Island. Plants are summer dormant, surviving by means of corms 10-30 mm in diameter. Leaves appear after the first winter rains and senesce coincident with flowering in April and May. Each plant produces 1-5 inflorescences, each with 7-15 white to cream-colored flowers. Historical records indicate that at least half of the present distribution was plowed and cultivated in the late 1890s, followed by sheep and cattle grazing until the 1930s. Thus, the species may have experienced some level of recovery, especially since the last sheep were removed in the 1980s. However, since the mid 1990s, the species has become increasingly threatened by feral pigs, which actively forage for succulent leaves and flowering shoots and uproot corms and roots of associated plants.
State Range
Distribution
Number Left
State/Area Protection
Ecological Relationships
Threats
Current Research Summary
Current Management Summary
Research Management Needs
Ex Situ Needs |
References |
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. |
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. |
James C. Hickman, Editor. 1993 The Jepson manual: Higher plants of California. Berkeley: University of California Press. 1400p. |
Thorp, R.W.; Wenner, A.; Barthell, J. Flowers visited by honey bees and native bees on Santa Cruz Island. The fourth California island symposium; Santa Barbara Museum of Natural History. In: Halvorson, W. ; Maender, G., editors. 1994. |
CalPhotos. (2002). CalPhotos: Berkely Digital Library Project. University of California, Berkeley. http://elib.cs.berkeley.edu/photos/. Accessed: 2002. |
CDFG. (2002). California's Plants and Animals, Threatened and Endangered Plants. List and Species Accounts. California Department of Fish and Game, Habitat Conservation Planning Branch. http://www.dfg.ca.gov/hcpb/species/t_e_spp/teplant/teplanta.shtml. Accessed: 2002. |
USFWS. (2002). Threatened & Endangered Plants Within Ventura Field and Wildlife Office Area of Responsibility. U.S. Fish and Wildlife Service, Ventura Fish and Wildlife Office. http://ventura.fws.gov/plant.html. Accessed: 2002. |
Moran, R. 1950. Notes on Hasseanthus II. Desert Plant Life. 22: 99-105. |
Moran, R. 1953. Hasseanthus, a subgenus of Dudleya. Leaflets of Western Botany. 7: 110. |
USFWS. 1995. Proposed rule for 16 plant taxa from the northern Channel Islands, California. Federal Register. 60, 142: 37993-38010. |
USFWS. 1997. Final rule for 13 plant taxa from the northern Channel Islands, California. Federal Register. 62, 147: 40954-40974. |
USFWS. 1997. Notice of Reopening of Comment Period on Proposed Endangered Status for Sixteen Plants from the Northern Channel Islands of California. Federal Register. 62, 14: 3263. |
1995. TNC "Plants in Need" List. The Nature Conservancy. p.3. |
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. |
USFWS. 2000. Thirteen plant taxa from the northern Channel Islands Recovery Plan. Portland, Oregon: U.S. Fish & Wildlife Service, Region 1. p.93. |
Wilken, D. 1996. Reproductive strategies of four plants restricted to the northern California Channel Islands. Report to the U.S. Fish and Wildlife Service. Santa Barbara Botanic Garden. p.42. |
| This profile was updated on 3/4/2010 |