THE BROAD-SCLEROPHYLL VEGETATION OF CALIFORNIA. 97 



Table 12. — External leaf character — Continued. 



Margin — Cont'd. 

 Toothed — Cont'd. 



Ceanothus dentatus. 



C. diversifolius. 



C. foliosus. 



C. papillosum. 



C. sorediatus. 



C. thyrsiflorus. 



C. tomentosus. 



C. velutinus. 



C. verrucosus. 



Fremontodendron cali- 



fornicum. 

 Comarostaphylis diver- 



sifolia. 

 Arctostaphylos ander- 



sonii. 

 Eriodictyon calif ornicum. 

 Spiny-toothed (17.6 p. ct.): 

 Quercus agrifolia. 

 Q. chrysolepis. 

 Q. dumosa. 

 Q. durata. 

 Q. wislizeni. 

 Berberis pinnata. 

 Heteromeles arbutifolia. 

 Prunus ilicifolia. 

 Rhamnus crocea. 

 Ceanothus crassifolius. 

 C. pinetorun. 

 C. prostratus. 

 C. rigidus. 

 Revolute (10.8 p. ct.): 

 Quercus durata. 

 Cercocarpus ledifolius. 

 Rhamnus californica. 

 Ceanothus crassifolius. 

 C. dentatus. 

 C. papillosus. 

 Garrya elliptica. 

 Xylococcus bicolor. 

 Surface: 



Glabrous (52.7 p. ct.) : 

 Myrica californica. 

 Quercus agrifolia. 

 Q. vaccinifolia. 



Surface — Cont'd. 



Glabrous (52.7 p. ct.) Cont'd. 



Q. wislizeni. 



Umbellularia califor- 

 nica. 



Berberis pinnata. 



Dendromecon rigidum. 



Heteromeles arbuti- 

 folia. 



Adenostoma fascicu- 

 latum. 



A. sparsifolium. 



Prunus ilicifolia. 



Xylothermia montana. 



Cneoridium dumosum. 



Rhus integi ifolia. 



R. laurina. 



R. ovata. 



Rhamnus crocea. 



Ceanothus cordulatus. 



C. divaricatus. 



C. foliosus. 



C. palmeri. 



C. pinetorum. 



C. prostratus. 



C. spinosus. 



C. thyrsiflorus. 



C. verrucosus. 



Arbutus menziesii. 



Arctostaphylos drupa- 

 cea. 



A. glauca. 



A. hookeri. 



A. manzanita. 



A. myrtifolia. 



A. nevadensis. 



A. nummularia. 



A. parry ana. 



A. patula. 



A. pungens. 



A. stanfordiana. 



A. viscida. 

 Lower surface pubescent 

 (31.1 p. ct.): 



Castanopsis chryso- 

 phylla. 



INTERNAL STRUCTURE. 



Surface — Cont'd. 



Lower surface pubescent 



(31.1 p. ct.) Cont'd. 

 C. sempervirens. 

 Quercus chrysolepis. 

 Q. dumosa. 

 Q. engelmanni. 

 Q. sadleriana. 

 Pasania densifiora. 

 Cercocarpus betulae- 



folius. 

 C. ledifolius. 

 Ceanothus crassifolius. 

 C. cuneatus. 

 C. incanus. 

 C. megacarpus. 

 C. rigidus. 

 C. sorediatus. 

 C. velutinus. 

 Garrya elliptica. 

 G. fremontii. 

 Comarostaphylis diver- 



sifolia. 

 Xylococcus bicolor. 

 Arctostaphylos ander- 



sonii. 

 A. pumila. 

 Eriodictyon californi- 



cum. 

 Both surfaces pubescent 



(16.2 p. ct.): 

 Quercus durata. 

 Rhamnus californica. 

 Ceanothus dentatus. 

 C. diversifolius. 

 C. hirsutus. 

 C. papillosus. 

 C. tomentosus. 

 Fremontodendron cali- 



f ornicum. 

 Arctostaphylos mari- 



posa. 

 A. montana. 

 A. tomentosa. 

 A. vestita. 



I have examined the leaves of 26 of the representative broad- 

 sclerophyll species of the central Coast Ranges. 7 are trees of the 

 broad-sclerophyll forest and the others are shrubs of the climax 

 chaparral. All the important genera are well represented, and it is 

 reasonable to assume that the selection presented here gives a true 

 picture of Californian broad-sclerophyll structure. The material 

 was collected near Palo Alto and in the Monterey region. It was 

 killed and preserved in formalin-alcohol, cut in celloidin, and stained 

 with safranin and aniline blue. 17 species have been selected for 

 illustration by means of drawings executed by Miss Vinnie A. Pease, 

 of the University of Minnesota. In addition to the general study, 



