on the plants and animals. 



Smith, Gladys L. 1962. Flowers of Lassen. Loomis Museum 

 Assn., Mineral, Calif. A booklet for the visitor to Lassen Vol- 

 canic National Park, the more conspicuous flowering plants 

 of the park illustrated and described. 



. 1963. Flowers and ferns of Muir Woods. Muir Woods 



Natural History Assn., Mill Valley, Calif. This is a booklet for 

 the visitor to carry with him on the trails of Muir Woods. 



Sudworth, George B. 1908. Forest trees of the Pacific slope. 

 Dover Publications Inc., New York. Descriptive account of 

 all trees of the Pacific coast, each species illustrated and with 

 a full statement of its range. No keys. Nomenclature modern- 

 ized by E. S. Harrar. 



Sweet, Muriel. 1962. Common edible and useful plants of the 

 west. Naturegraph Co., Healdsburg, Calif. Ferns, water plants, 

 vines, trees, shrubs, and herbs which have been or are useful 

 are illustrated and described briefly. Poisonous plants are 

 carefully designated. An interestingly written account for 

 the layman. 



Thomas, John H. 1961 . Flora of the Santa Cruz Mountains of 

 California. Stanford Univ. Press, Stanford. A technically de- 

 tailed and authoritative treatment of the plants of the Santa 

 Cruz Mountains, of value to the botanist and advanced ama- 

 teur. Individual species are carefuUy keyed, and habitats and 

 localities are given. 



Thomas, John H., and Dennis R. Parnell. 1974. Native shrubs of 

 the Sierra Nevada. Univ. Calif. Press, Berkeley and Los An- 

 geles. Natural History Guide Series. An illustrated guide to 

 the native shrubs of the Sierra Nevada. 



Thorne, Robert F. 1967. A flora of Santa Catalina Island, Cali- 

 fornia. Aliso, Volume 6, Rancho Santa Ana Botanic Garden, 

 Claremont, Calif. This work contains an annotated checklist 

 of the plant species and a short study of the ecological charac- 

 teristics of the area. 



Thurston, Carl. 1936. Wildflowers of southern California. Esto 

 Publishing Co., Pasadena. Popular treatment of almost all the 

 seed plants and ferns of southern CaHfomia from Santa Bar- 

 bara county southward. Well illustrated with 547 photographs. 



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