500 IOWA ACADEMY OF SCIENCE 



Oregon Oak (Quercus Garryana Dougl.). This oak, of wide 

 distribution on the Pacific Coast reaching up into Oregon, Wash- 

 ington and British Columbia, was observed in the Santa Cruz 

 mountains. 



Blue Oak (Quercus Vouglasii II. and A.). This is an abundant 

 species in the lower Feather river canyon about Belden. 



Maul Oak (Quercus chrysolepis Liebm.) is another oak of 

 wide distribution, with toothed or entire leaves. Beautiful spec- 

 imens occur in the Feather river canyon about Belden, Mill 

 Valley, Muir woods and the San Bernardino Mountains in 

 Southern California. 



Coast Live Oak (Quercus agrifolia Nee). A tree sometimes 

 seventy feet high with short trunk and spreading branches. 

 Found at Berkeley and in the coast ranges southward. Com- 

 monly found on the low hills, giving them a unicrue appearance. 



Live Oak (Quercus Wislizeni ADC). Yuba and Feather 

 river valleys, Live Oak. 



California Black Oak (Quercus Kelloggii Newb.). This 

 species approaches the eastern black oak. A good sized tree on 

 high ridges at Portola at an altitude of 4,500 feet. 



Tan Bark Oak (Pasania dcnsiflora Oerst.). The tan bark oak 

 has erect staminate flowers resembling Castanea, and the fruit 

 is like Quercus. The bark of the tree is used extensively for 

 tanning. At Mill Valley it occurred with redwood (Sequoia 

 senipervirens). 



PLAT A~N ACE 2E Sycamore Family. 



Sycamore (Platanus racemosa Nutt.). The California Syca- 

 more resembles our eastern species but with fruit racemose 

 and widespreading branches. The species occurs in the great 

 valley near Yuba City but is more common southward in the 

 Coast ranges like the Santa Cruz mountains near Big Trees, 

 Santa Barbara and San Bernardino mountains. 

 LAURACEM Laurel Family. 



California Laurel or Bay Tree (JJ nib ellul aria calif ornica 

 Nutt.). Common and abundant everywhere in the lower Feather 

 river canyon, Belden, near Berkeley, in the canyons, and in 

 the Santa Cruz mountains. 



