494 IOWA ACADEMY OF SCIENCE 



SOME NOTES ON CALIFORNIA FOREST FLORA. 



L. H. PAMMEL. 



Not much that is new can be presented on the forest flora of 

 the state of California. The interesting forest flora of Cali- 

 fornia has been worked over most carefully by a large number 

 of eminent botanists ; of the later contributions we may mention 

 a few of the more recent: namely, the work of Willis Linn 

 Jepson, "The Trees of California" 1 and by the same author 

 "The Silva of California," 2 published in 1914, which is the 

 most complete and exhaustive treatise on trees of any given 

 local region; the work of Sudworth, "Forest Trees of the Pa- 

 cific Slope;" 3 the work of Sargent, "Manual of the Forest Trees 

 of North America Exclusive of Mexico" 4 and his monumental 

 work, "The Silva of North America" in fourteen volumes, and 

 Britt on's "North American Trees." 5 



Many botanists have, of course, contributed to our knowledge 

 of the trees of California. Of the earlier botanists and ex- 

 plorers mention may be made of Kellogg, Brewer, Parry, Doug- 

 las, Nuttall, Fremont, Bolander, Watson, Gray and Torrey. Of 

 the later botanists mention may be made of H. M. Hall, W. R. 

 Dudley, Baker, Green, S. B. Parish, Heller, Macbride, Cleveland 

 and Orcutt. 



Our visit during the summer of 1915 included stops at Por- 

 tola and Belden in the Feather river canyon, at Yuba City, the 

 Bay region around San Francisco, Big Trees region near Santa 

 Cruz and Monterey, Santa Barbara, Los Angeles, San Diego 

 and San Bernardino. Representative types of trees were col- 

 lected and herbarium material prepared. 



Those who are familiar with the topography of California 

 know that there are two rugged chains of mountains, the Sierra 

 Nevada in the eastern part of the state and the Coast Ranges 

 near the coast. Between these ranges a "Great Valley" as it 

 is called contains the Sacramento Valley, the northerly valley 

 in which the Feather, Yuba and other rivers join the Sacra- 



*228 pp. figs. 115. Cunningham, Curtiss and Welch, 1909. 

 ^Memoirs of the University of California, 2: 1-4S0, 85 pi., 10 figs., 3 maps. 

 3 Ut S. Department of Agriculture, Forest Service, 411 pp. figs., October 1, 

 1908. 



4 S46 pp. ; 61/2 figs., 1 map. 



B N. L. Britton and John A. Schafer, S04 pp. ; 781 figs. 



