—Si- 



Fig. 8. Sectio transversa e basali parte folii: (i) cellulae laminares, (2) 

 c. ventrales, (3) c. dorsales, (4) c. strati superioris librorum, (5) duces, (6) 

 c. strati inferioris librorum X 215. 



Fig, 9. Sectio transversa nervi e parte media folii; (i) - (6) uti apud 

 figuram 8. 



Fig. 10. Sectio transversa e superiori parte folii; (i) c. laminares grana 

 chlorophylli multa habentia, (2) - (6) uti apud figuram 8 X 215. 



Fig. II. Cellulae laminares e media parte folii in spectatione superiiciali 

 X 215. 



Fig. 12. C. laminares e basali parte folii in superficiali spectatione X 215. 

 Fig. 13-14. Flores feminei X 16. 



NEW OR RARE CALIFORNIAN LICHENS. 



Albert W. C. T. Herre. 



To the student of lichens in one of the Atlantic seaboard states, it would 

 seem that the lichen flora of California must be well known and thoroughly 

 worked out. Yet such is not the case. Excepting the region within 75 miles 

 of Los Angeles, and the Santa Cruz peninusla, no section of the state has been 

 thoroughly worked. Such is the diversity of topographical and climatic con- 

 ditions, that twenty miles from the Santa Cruz peninsula, in the dry Inner 

 Coast Range, we come upon a lichen flora which presents many striking diverg- 

 encies from that previously studied by me in the peninsula. Not only are there 

 many problems of distribution to be worked out in the counties lying between 

 the ocean and the Sacramento Valley, and in the region about Mount Shasta 

 and the other peaks of northeastern California, but there are still many remark- 

 able new species to be discovered. The large foliose and fruticose lichens of 

 the state are fairly well known, and no new species of these are to be expected, 

 though a number occur which are known only from other parts of the country. 

 Among the rock lichens of obscure habit but little work has been done, and a 

 careful study of the rock lichens of any canon in the Inner Coast Range of the 

 northern part of the state will be rewarded by many rare finds. Especially 

 should the calcareous rocks be studied, as but very little attention has been 

 paid to their lichens. 



The following lichens are a few to which I wish to call the attention of stu- 

 dents of our western species. I have collected most of them in various parts 

 of the state, while a number have been recognized while studying the unde- 

 termined miscellaneous lichen collections in the herbarium of the University 

 of California. 



I reluctantly describe any species, however well marked, as new, and those 

 herein given are but a small part of the number set aside in my herbarium as 

 different from any described in the accessible literature or exemplified in the, 

 published exsiccata. 



EvERSON, Washington. 



