THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA 6 1 



4. CYPHELIUM CALIFORNICUM (Tuck.) A. Zahlbr. 

 Trachylia californicum Tuck. 



Acolium californicum Tuck. Lich. Calif. 27. 1866. 

 Acolium californicum Tuck. Gen. Lich. 237. 1872. 

 Cyphelium californicum A. Zahlbr. Ascolichenes, 84. 1907. 



Thallus orbiculate to effuse, thick, uniform, with plicate irregular 

 surface and crenate, radiately lobulate margin; often sub-imbricate 

 or else fissured and lobulate-areolate; color white, whitish, and brown- 

 ish gray, the margin much lighter-colored than the central portion; 

 the fertile warts not so enlarged proportionately as in Cyphelium 

 bolanderi, but exhibiting the same tendency to become brown; KOH 

 yellowish; CaCl 2 O 2 -. 



Apothecia from small becoming medium or large, innate, crateri- 

 form, the disk broad, concave or plane, black; not pruinose in the 

 specimens seen; thecium colorless, the paraphyses very long, slender, 

 and intricately entwined; asci slender, cylindrical; underlaid by a 

 thick brown-black band, the remains of the proper margin, of the 

 following shape, 



spores dark, bilocular, constricted in the middle, the sporoblasts 



gf 15 10 18 



approximate, /*; according to Tuck., *- //. 



13? ~ 2 5 l8 - 25 



Common on rocks in the San Bruno Hills, at from 500 to 1000 feet 

 altitude. Collected but once elsewhere, among some specimens of 

 Lecanora pinguis, 50 feet above the sea at Point Lobos, San Francisco. 

 Specimens examined in the Tuckerman Herbarium, the herbarium 

 of Dr. C. L. Anderson, and the author's own material collected by 

 Bolander. Probably confined to the coast of California. 



5. CYPHELIUM FARLOWI (Tuck.) Herre. 

 Acolium farlowi Tuck, in Tuck. Herbarium (1885); Monterey. 

 Acolium farlowi in Anderson Herbarium? 



This lichen has not been positively identified as yet by me from our 

 territory, but probably occurs along the north shore of Monterey Bay. 

 It differs from Cyphelium californicum, to which it is closely related, 

 in its smaller and thinner thallus and in the much smaller spores which, 



according to Tuckerman, measure //. 



