112 LICHENS OF THE STATE OF WASHINGTON 



On rock : San Juan Co. : San Juan Island, trail to Heaven, 1940, 3248; 

 Argyle, 1940, 3214. Okanogan Co.: butte near Twisp, 1700 ft., 1931, 1464. 

 Herre (1917) reports it from Mt. Baker at 6000 ft. 



3. Lecanora cinerea (L.) Rohl. Deutschl. Fl. 3:2 Abt. 90. 1813. 

 Lichen cinereus Linn. Mant. 1 :132. 1767. 



Thallus ashy-white, gray, brownish gray, or almost black, crustose, con- 

 sisting of rough uniform areoles separated by irregular fissures, or of 

 separate distinct areoles ; black hypothallus not always evident ; yellow with 

 KOH, then a permanent reddish color, no color change with either CaOClj 

 or IKI. Apothecia circular to somewhat irregular in shape, numerous, 

 1 -several in an areole, 0.2-1.0 mm. in diameter, immersed; disk black, con- 

 cave to flat; thalline margin concolorous with the thallus or sometimes 

 black, thin, persistent; asci usually 8-spored, sometimes 6-spored; spores 

 hyaline, ellipsoid or subglobose, nonseptate, 18.0-22.0 x 13.2-14.0 /x. 



On rock: Okanogan Co.: Tonasket, 1200 ft., 1931, 1384. Ferry Co.: 

 north of Republic, 2650 ft., 1931, 1403; Mt. Gibraltar, 3100 ft., 1940. 

 Whitman Co.: Pullman, 2550 ft., 1931, 1584a. Garfield Co.: 1860 ft., 1931, 

 1569. Clallam Co. : Lake Crescent, Storm King Mountain, 1935, A. H. 

 Smith 2283 (F). Rainier National Park, Glacier Basin, 1925, /. M. Grant 



(F). 



4. Lecanora gibbosa (Ach.) Nyl. Mem. Soc. Imp. Sc. Nat. Cherbourg, 

 5:113. 1857. 



Lichen gibbosus Ach. Lichenogr. Suec. Prodro. 30. 1798. 

 Lecanora cinerea var. gibbosa (Ach.) Nyl. 



Thallus gray, greenish brown, or brown, crustose, determinate, con- 

 sisting of rather thick, smooth areoles, becoming tumid, irregular, rough 

 and crumbling, on a black hypothallus; no color change with KOH, 

 CaOClg, or IKI. Apothecia circular to somewhat irregular in shape, 1, 2, or 

 3 in an areole, 0.4-1.0 mm. in diameter, immersed, finally adnate; disk 

 black, concave to flat; thalline margin concolorous with the thallus, often 

 blackening, persistent, thin, becoming slightly crenulate; asci 4-8-spored, 

 ellipsoid or subglobose, with a distinct epispore, nonseptate, 20.0-23.1 x 

 8.5-9.0 fi.. 



On rock: Chelan Co.: White Rock Camp, 2200 ft., 1931, 1040; Dirty 

 Face Mountain, 3000 ft., 1931, 1369. Yakima Co.: gulch near Naches, 

 1350 ft., 1931, 1166. Okanogan Co.: Twisp State Trail, 5000 ft., 1931, 

 1303; Olympic Mountains, Hurricane Ridge, 5500 ft., A. H. Smith 2876 

 (M). Ferry Co.: Republic, 1912, Foster 2319 (F). Washington Terri- 

 tory, Suksdorf (S). 



5. Lecanora lacustris (With.) Nyl. Lich. Scand. 155. 1861. 

 Lichen lacustris With. A Bot. Arr. Brit. PI. 3rd ed., 4:21. 1796. 



Thallus brick color or pale brick color, crustose, thin, smooth, rimose- 

 areolate ; no color change with KOH, CaOCU, or IKI. Apothecia circular, 



