The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.


  • Bean, W.J. 1980. Trees and shrubs hardy in the British Isles, ed. 8, Vols. 1-4. John Murray, London
  • Farjon A. (2015). Conifer Database (version Jan 2014). In: Species 2000 & ITIS Catalogue of Life, 26th August 2015 (Roskov Y., Abucay L., Orrell T., Nicolson D., Kunze T., Flann C., Bailly N., Kirk P., Bourgoin T., DeWalt R.E., Decock W., De Wever A., eds). Digital resource at Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.
  • Farjon, A. 1990. Pinaceae. [Regnum Vegetabile Vol. 121]. Koeltz Scientific Books, Königstein
  • Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley.
  • Proceedings of the American Academy of Arts and Sciences 20: 378. 1885. (Proc. Amer. Acad. Arts)
  • S. Watson. 1885. In: Proc. Amer. Acad. Arts 20: 378.
    1. American Forestry Association. 1982. National register of big trees.  American Forests 88(4):18-48.
    3. Atzet, Thomas. 1979. Description and classification of the forest of  the upper Illinois River drainage of southwestern Oregon. Thesis  (Ph.D.), Oregon State University, Corvallis. 186 p.
    5. Bega, Robert V. 1978. Diseases of Pacific coast conifers. U.S.  Department of Agriculture, Agriculture Handbook 521. Washington, DC. 204  p.
    7. Eyre, F. H., ed. 1980. Forest cover types of the United States and  Canada. Society of American Foresters, Washington, DC. 148 p.
    9. Franklin, Jerry F., Frederick C. Hall, C. T. Dyrness, and Chris  Maser. 1972. Federal Research Natural Areas in Oregon and Washington.  USDA Forest Service, Pacific Northwest Forest and Range Experiment  Station, Portland, OR. 496 p.
    11. Furniss, R. L., and V. M. Carolin. 1977. Western forest insects.  U.S. Department of Agriculture, Miscellaneous Publication 1339.  Washington, DC. 654 p.
    13. Griffin, James R., and William B. Critchfield. 1972. The  distribution of forest trees in California. USDA Forest Service,  Research Paper PSW-82 (reprinted with supplement, 1976). Pacific  Southwest Forest and Range Experiment Station, Berkeley, CA. 118 p. 
    15. Hawksworth, F. G., H. H. Bynum, and D. V. Hemphill. 1970. Dwarf  mistletoes on Brewer spruce. Plant Disease Reporter 54(6):488-489.
    17. Langer, Stephen K. 1988. Two discoveries in the Siskiyous. Fremontia  16(3):19-20.
    19. Lewis, C. E. 1975. The graceful weeping tree. American Nurseryman  141(11):10-11.
    21. Peters, Robert L. 1989. Effects of global warming on biological  diversity. In The challenge of global warming. p. 82-95. D. E.  Abrahamson, ed. Island Press, Covelo, CA.
    23. Sawyer, John 0., and Dale A. Thornburgh. 1969. Ecological  reconnaissance of relict conifers in the Klamath region. Unpublished  report. Pacific Southwest Forest and Range Experiment Station, Berkeley,  CA. 97 p.
    25. Sawyer, John 0., and Dale A. Thornburgh. 1977. Montane and subalpine  vegetation of the Klamath Mountains. In Terrestrial vegetation  of California. p. 699-732. M. G. Barbour and J. Major, eds. John Wiley,  New York.
    27. Thornburgh, Dale A., and Richard C. White. 1979. Vegetation-habitat  types of montane forests in the Siskiyou Mountains. Unpublished report.  Humboldt State University, Forestry Department, Arcata, CA. 22 p.
    29. Thornburgh, Dale A., and Howard Zinman. 1978. Stand structural  analysis of Brewer spruce populations. Unpublished report. Humboldt  State University, Forestry Department, Arcata, CA. 27 p.
    31. Waring, R. H. 1969. Forest plants of the eastern Siskiyous: their  environmental and vegetational distribution. Northwest Science  43(l):1-17.
    33. Waring, R. H., W. H. Emmingham, and S. W. Running. 1975.  Environmental limits of an endemic spruce, Picea breweriana. Canadian  Journal of Botany 53(15):1599-1613.


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