120 THE BROAD-SCLEROPHYLL VEGETATION OF CALIFORNIA. 



77. Arctostaphylos mamanita Parry. Mountains of the northern half of the State, from 

 the region of San Francisco Bay and Stanislaus County into Oregon; almost complementary 

 in range to A. glauca, and of equal or greater importance in the chmax chaparral. 



78. Arctostaphylos mariposa Dudley. Sierra foothills and to some extent in the forest 

 region. Of considerable importance where it occurs. 



79. Arctostaphylos ntontana Eastwood. Central Coast Ranges, very local; on Mount 

 Tamalpais, where it is apparently confined to the outcrops of serpentine, which are avoided 

 by other species of the genus growing on the mountain. 



80. Arctostaphylos myrtifolia Parry. Near lone, Amador County. Known only from 

 the type locaUty. 



81. Arctostaphylos nevadensis A. Gray. Upper forest region of the Sierra Nevada; ex- 

 treme northern California, the mountains of Trinity County, and in the Cascades of Oregon. 

 A very low, spreading shrub, of considerable importance successionally in the high mountain 

 forest regions. 



82. Arctostaphylos nummularia A. Gray. Outer north Coast Ranges; Santa Cruz 

 Mountains; Mount Tamalpais to Mendocino County. Characteristic of the Mendocino 

 "white plains;" not important in the chaparral. 



83. Arctostaphylos parryana Lemmon. Southern Sierras and Mount Pines to the San 

 Bernardino Range. 



84. Arctostaphylos patula Greene. Cascades of Oregon; eastward to the Blue Moun- 

 tains (northeastern Oregon) and Utah; south in California to Trinity County in the Coast 

 Ranges, throughout the middle altitudes of the Sierras, extending to Mount San Jacinto. 

 The most important species of the genus in the upper conifer-forest chaparral. 



85. Arctostaphylos pumila Nutt. Endemic in the Monterey region, growing with other 

 local species already noted (see No. 56). A low, spreading shrub, resembling A. nevadensis 

 in habit; an important sand-binder on the dunes of Monterey Bay. 



86. Arctostaphylos pungens H. B. K. Southern California (San Bernardino and Cuya- 

 maca Mountains) and Lower California to southwestern Colorado, Arizona, and Central 

 Mexico. Conifer-forest chaparral. An important species in the dilute chaparral of the 

 Santa Catalina Mountains in Arizona. 



87. Arctostaphylos stanfordiana Parry. Of limited range in the inner north Coast 

 Ranges from Mount Diablo to Mendocino County. A rather rare species of the climax 

 chaparral, conspicuous by reason of its yellow-green foliage. 



88. Arctostaphylos tomentosa (Pursh) Dougl. Southern British Columbia through west- 

 ern Washington and Oregon and the Coast Ranges and Sierras of California to Lower 

 Cahfornia. Probably the most widely distributed member of the genus except A. uva- 

 ursi and possibly A. pungens. Extremely variable; several more or less well marked species 

 have been segregated, and the synonymy of the group is confused. An important member 

 of the chaparral, mainly in the climax type; frequently the only manzanita present, and 

 in such cases forming the bulk of the growth of the less xerophytic situations. 



89. Arctostaphylos veatita Eastwood. Endemic in the Monterey region, growing with 

 other local species already noted (see No. 56). 



90. Arctostaphylos viscida Parry. East slopes of the inner north Coast Ranges and the 

 Sierra foothills; northward to southern Oregon. An important member of the chaparral 

 of the digger and lower yellow pine zones; forming a very beautiful gray-green cover when 

 in pure growth. 



HYDROPHYLLACE^. 



91. Eriodictyon californicum (H. and A.) Torr. Yerba santa. Coast Ranges and lower 

 Sierras. Belongs mainly with the climax chaparral; infrequent, however, in dense brush; 

 characteristic where climax conditions have been disturbed; frequent along roads and 

 trails in the chaparral. Three other species of Eriodictyon occasionally occur in the chap- 

 arral, but have been excluded from the category of dominants. 



The Secondary Species. 



In the following paragraphs the normal undergrowth of the 

 broad-sclerophyll forest and the climax chaparral is presented. 

 In addition a list of incidental species might be compiled and extended 

 indefinitely. Some of these are of considerable importance, one 



