38 LICHENS OF THE STATE OF WASHINGTON 



Pass, 3010 ft., 810a. Pend Oreille Co. : Metaline Falls, 2600 ft., 1931, 1474. 

 San Juan Co.: San Juan Island, Friday Harbor, 1906, Fink 225 (W). 

 Clallam Co.: Olympic Hot Springs, 1914, Foster 2867. (W). Skamania 

 Co.: Little Soda Springs Camp Ground, 1933, Lawrence (W). King Co.: 

 Seattle, 1893, Piper 531 (W). Plate I, D, and Plate II, A. 



A rather common large foliose lichen, usually found on bark, rarely on 

 rock, easily confused with L. 'oregana. 



3. Lobaria Halli (Tuck.) Zahlbr. Cat. Lich. Univ. 3:321. 1925. 

 Sticta Hallii Tuck. Proc. Am. Acad. Arts and Sci. 12:168. 1877. 



Thallus Isabella color (R) or deep olive buff (R), small to medium 

 sized, coriaceous-cartilagineous, reticulately pitted, with shallow cracks, 

 granulose villous, lobes wide, rounded and entire, beset with scattered gray 

 soredia, usually not on the margins; below clay color (R) or light pinkish 

 cinnamon (R), covered with a reticulated tomentum interspersed with 

 irregular white, naked spots. Apothecia rather rare, scattered or submar- 

 ginal, 0.3-3.0 mm. in diameter, sessile ; disk fiat to convex ; thalline margin 

 pilose, concolorous with the thallus; spores brown, cymbiform, 1 -septate, 

 ''23-36 X 9-14 fjL." From Tuck. Syn. N. Am. Lich. 102. 1882. 



On bark or soil: Thurston Co.: Gate, 1912, Foster 1895 (F). Wash- 

 ington Territory, Suksdorf (F). Type collected in Oregon 1871 by E. Hall. 

 No fruiting specimens from the state have been seen by the writer. 



The more or less hairy upper surface and the veined lower surface 

 separate sterile specimens of L. Hallii from L. verrucosa. 



4. Lobaria verrucosa (Huds.) Hoffm. Deutschl. Fl. 2:146. 1796. Lichen 

 verrucosus Huds. Fl. Ang. 445. 1762. Sticta scrobiculata (Scop.) Ach. 

 Sticta verrucosa (Huds.) Fink. 



Thallus dark olive-buff (R), deep colonial-buff (R), or Isabella color 

 (R), medium sized, coriaceous, suborbicular, pitted and wrinkled, rarely 

 reticulate-ribbed, lobes rounded, margins entire, often much beset with 

 groups of gray or white soredia, soredia more rarely scattered over the sur- 

 face ; below clay color (R), light pinkish cinnamon (R), or becoming almost 

 black, covered with a dense tomentum, interspersed with scattered, small, 

 naked, white, blister-like, flat, or sunken spots. No fruiting material, col- 

 lected in this state, has been seen by the writer. Tuckerman studied no 

 fertile material from the United States. 



On rocks, soil, and bark: San Juan Co.: San Juan Island, 1930, 501; 

 Pt. Caution, 1940, 3266; Brown Island, 1940, 3211; Orcas Island, Mt. 

 Constitution, 2500 ft., 1928, 1999. Pacific Co. : Chinook, 1940, 2813. San 

 Juan Co.: San Juan Island, Friday Harbor, 1906, Fink 16 (W). Clallam 

 Co.: Port Angeles, Coleman's Butte, 2000 ft., 1914, Foster 2641 (W). 

 Thurston Co.: Gate, 1911, Foster 1931 (W). King Co.: Seattle, Parker 

 29 (W). 



This species is easily separated from L. Hallii by the spore differences. 



