Ranch Resources

Support SPR

SPR Products

Natural Beef

Grass-Fed Beef

Check out our products and their benefits…

U-Pick Apples

U-Pick Apples

16 distinct varieties…


To provide Cal Poly students, faculty, staff and the public with a unique interdisciplinary environment in which to foster the Learn by Doing philosophy by providing educational experiences on a working ranch, supporting diversified agriculture and forest resources while maintaining the integrity of ranch operations.

  —Our Mission

Click for Davenport, California Forecast


Flora of Scotts Creek Watershed

About this Project

This online flora of Scotts Creek Watershed is designed to present a complete list of the various local plants along with photos and descriptions for many of them. Initially, several of the commonly encountered plants can be called up and presented with at least some pictures. The goal is that eventually each plant will have images and data associated with it. This site was began as a senior project of Stephanie Mitchell, a Cal Poly Biology student.

From the main page, the plant list, which contains all the known plants of Scotts Creek Watershed, can be reorganized in various ways to allow users to more easily find what they are searching for. Plant names can be clicked on to bring up their individual entry which may show additional information and images. Most of the attribute titles are self explanatory but descriptions have been provided here for those that are not entirely clear.

Notes and Rarity Levels: This category contains comments on where the plant may be introduced from, rarity ranking levels, and any other comments on the general naming of that specific plant. Different rarity levels need to be taken into account when implementing different management actions that will have significant effect on the botanical community. If applicable to the specific plant this category gives Federal and State status, global and state ranking, and its level of CNPS Listing. BLM had a helpful webpage explaining the different meanings of the federal and state plant status, http://www.ca.blm.gov//pa/ssp/Main_Status.html. For explanations of global and state rankings see http://www.dfg.ca.gov/whdab/pdfs/elmrank.pdf. These links are also given within the Links page. The table below explains the CNPS listings of the California Native Plant Society's Rare Plant Program, this information can also be found at http://www.cnps.org/programs/Rare_Plant/program.htm.

List CNPS Explanation
1A Presumed Extinct in California
1B Rare or Endangered in California and Elsewhere
2 Rare or Endangered in California, More Common Elsewhere
3 Need More Information
4 Plants of Limited Distribution

Locations Found at Swanton: Gives general location area at Swanton where plants were found and photographed, but most likely may be found in additional areas. Several of the plants listed may have a very limited distribution in the local area.

The information presented in this database is, to my knowledge, as accurate as I was able to make it. However, no warranties or guarantees as to the accuracy of the information presented in this web site are expressed or implied. If a question or discrepancy arises, please consult an authoritative plant manual (such as The Jepson Manual) or an experienced botanist.

The images displayed are mostly taken by Stephanie Mitchell. Images were also contributed by Wally Mark, Jason Pearson, and Alyson Aquino. Thanks very much to Jeff Reimer for his assistance and guidance in creation of this webpage. Thank you also to Jim West for touring me around Swanton and showing me the many many wonderful plants that are there, and to Dr. Wally Mark for his introducing the idea of this project to me and for being my senior project advisor.

Several exotic species are found on the property in limited and isolated spots. These species include, Pampas Grass Cortaderia selloana and Cortaderia jubata, Periwinkle (riparian) Vinca major, Italian Thistle Carduus pyenocephlus, Milk Thistle Silybum marianum, Bull Thistle Cirsium vulgare, Himalyan Blackberry Rubus procerus, German Ivy  Senecio milkanioides, French Broom Monspessulana genista, Poison Hemlock (grassland) Conium maculatum and Eucalyptus Eucalyptus globulus.


Becking, Dr. Rudolf W. Pocket Flora of the Redwood Forest. Covelo, CA: Island Press, 1982.

CalFlora: Information on California plants for education, research and conservation. (web application). 2004. Albany, California: The CalFlora Database (a non-profit organization). http://www.calflora.org/. Retrieved Oct.-Dec. 2004.

Clark, Lewis J. Wildflowers of Pacific Northwest. Vancouver, British Columbia: Evergreen Press Limited, 1976.

Coleman, Ronald A. The Wild Orchids of California. Ithaca, NY: Cornell University Press, 1995.

Crampton, Beecher. Grasses in California. California Natural History Guides 33. Berkeley, CA: University of California Press, 1974.

Faber, Phyllis M. Common Wetland Plants of Coastal California. 2 nd ed. Mill Valley, CA: Pickleweed Press, 1996.

Faber, Phyllis M. and Robert F. Holland. Common Riparian Plants of California. Mill Valley, CA: Pickleweed Press, 1992.

Flora of North America Editorial Committee, eds. Flora of North America. New York: Oxford University Press, 1993+. May 21, 2004. eFloras.org. http://www.efloras.org/flora_page.aspx?flora_id=1. Retrieved Oct.-Dec. 2004.

Grillos, Steve J. Ferns and Fern Allies of California. California Natural History Guides 16. Berkeley, CA: University of California Press, 1974.

Harris, James G. and Melinda Woolf Harris. Plant Identification Terminology: An Illustrated Glossary. 2 nd ed. Spring Lake, Utah: Spring Lake Publishing, 2003.

Hickman, James C., ed. The Jepson Manual, Online Treatments. Berkeley, CA: University of California Press, 1993. Jepson Flora Project. Retrieved Oct.-Dec. 2004. http://ucjeps.berkeley.edu/interchange/I_treat_indexes.html.

Hickman, James C., ed. The Jepson Manual: Higher Plants of California. Berkeley, CA: University of California Press, 1996.

Hitchcock, A. S. Manual of the Grasses of the United States. Vols. 1,2. 2 nd ed. Agnes Chase. New York: Dover Publications, Inc, 1971.

Integrated Taxonomic Information System. November 23, 2004. Retrieved Oct.-Dec. 2004. http://www.itis.usda.gov.

Jepson Online Interchange for California Floristics. November 21, 2004. Jepson Flora Project. Retrieved Oct.-Dec. 2004. http://ucjeps.berkeley.edu/interchange.html.

Lanner, Ronald M. Conifers of California. Los Olivos, CA: Cachuma Press, 1999.

Lellinger, David B. A Field Manual of the Ferns and Fern-Allies of the United States and Canada. Washington, DC: Smithsonian Institution Press, 1985.

Miller, Howard and Samuel Lamb. Oaks of North America. Happy Camp, CA: Naturegraph Publishers, Inc., 1985.

Niehaus, Theodore F. Pacific States Wildflowers. Peterson Field Guides 22. New York: Houghton Mifflin Company, 1976.

Spellenberg, Richard. National Audubon Society Field Guide to North American Wildflowers: Western Region. Rev. ed. New York: Alfred A. Knopf, 2001.

Stuart, John D. and John O. Sawyer. Trees and Shrubs of California. California Natural History Guides 62. Berkeley, CA: University of California Press, 2001.

Thomas, John Hunter. Flora of the Santa CruzMountains of California. Stanford, CA: Stanford University Press,1961.

back to top

Related Links

Jepson Online Interchange for California Floristics, gives up to date status on accepted naming and other details of California vascular plants.

Online version of the Jepson Manual

Page by the California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch. Contains Special Plants List and the Endangered, Threatened, and Rare Plants List, giving rankings and status.

Explaination of the global and state rankings used in the Special Plants List

Helpful definitions of plant status, put out by BLM