46 HERRE 



mountains of Europe, northern Africa, North America, and New 



Zealand. 



(miniatum, red, of no application here.) 



Of several named varieties one is common here. 



4. DERMATOCARPON MINIATUM COMPLICATUM (Sw.) 



Th. Fr. 



Lichen complicatus Swartz, Nov. Act. Upsal. 4: 38. 1776. 

 Dermatocarpon miniatum complicatum Th. Fr. Nov. Act. Soc. 

 Sci. Ups. Ill, 3: 353. 1861. 



Thallus small to medium, polyphyllous, densely compacted, the 

 imbricate and complicate lobes rotund, convolute, and more or less 

 ascendant, with recurved margin; the surface more or less roughened 

 and wrinkled. Otherwise like the species. 



Common in the foothills with the type, but most abundant on sun- 

 nier or more exposed rocks. 



5. DERMATOCARPON FLUVIATILE (Weber). 



Lichen aquaticus Weis, PI. Crypt. 77, 1770. Not L. 1753. 

 Lichen fluviatile Weber, Spec. Fl. Gott. 265. pi. ^. 1778, 

 Dermatocarpon aquaticum A. Zahlbr. Annalen des K. K. Naturh. Hofm. 



Band XVI, Heft I, p. 81. 1901. 

 Dermatocarpon aquaticum Herre, Proc. Wash. Acad. Sci. 7 • 394- 1906. 



Thallus small, thick, smooth, lobes densely imbricate and com- 

 pacted; margin rounded, entire or crenate-lobulate; closely appressed, 

 umbilicate; resembling an intricately convolute, adnate, crustaceous 

 lichen; color dull gray or olive-brown; sometimes white granulose 

 pruinose; beneath smooth, dark brown to dingy black. 



Apothecia as in Dermatocarpon miniatum, but proportionately 



larger and less numerous; spores ellipsoid, — ^ ~ jx. 



14^ - i9i 



Abundant on granite cliffs 200 feet above the sea, near Point San 

 Pedro; occurring also on wet sandstone in Devils Cafton, altitude 2300 

 feet, and at the head of Kings Creek at about 2800 feet. Widely dis- 

 tributed in the North Temperate region. 



