slightly fire-resistant bark and serotinous cones. Its low branching
habit makes it susceptible to crown fires [1,26]. The serotinous cones
of the California cypress species persist on trees for years [13,28].
Cone opening is erratic and almost negligible except when cones are
exposed to extreme heat; then it is rapid and uniform [16,28]. When
opened by the heat of a fire, the seeds fall on exposed mineral soil
[13,27]. Most seed falls in the first few months following fire .
Fires that occur in late summer and fall and are followed by winter
rains ensure seed dissemination on bare mineral substrates and moist
conditions for germination . Successful cypress reproduction is
generally restricted to burned sites . No information was available
on fire-free intervals for communities dominated by Gowen cypress.
Tecate cypress (Cupressus guadalupenis var. forbesii), however, a
cypress found in southern California, has an average interval between
fires of 25 years, ranging from 15 to 63 years [1,26]. Cypress trees of
southern California generally reach cone-bearing age before another fire
- 1. Armstrong, Wayne P. 1966. Ecological and taxonomic relationships of Cupressus in southern California. Los Angles, CA: California State College. 129 p. Thesis. 
- 13. Little, Elbert L., Jr. 1975. Rare and local conifers in the United States. Conservation Research Rep. No. 19. Washington, DC: U.S. Department of Agriculture, Forest Service. 25 p. 
- 16. McMillan, Calvin. 1956. The edaphic restriction of Cupressus and Pinus in the Coast Ranges of central California. Ecological Monographs. 26: 177-212. 
- 26. Vogl, Richard J.; Armstrong, Wayne P.; White, Keith L.; Cole, Kenneth L. 1977. The closed-cone pines and cypress. In: Barbour, Michael G.; Major, Jack, eds. Terrestrial vegetation of California. New York: John Wiley and Sons: 295-358. 
- 27. Wolf, Carl B.; Wagener, Willis W. 1948. The New World cypresses. El Aliso Series: Vol. 1. Anaheim, CA: Rancho Santa Ana Botanic Garden. 444 p. 
- 28. Zedler, Paul H. 1986. Closed-cone conifers of the chaparral. Fremontia. 14(3): 14-17. 
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