LICHENS OF THE STATE OF WASHINGTON 57 



On rock: Pierce Co.: White River Camp, 3000 ft., 1928, 1942; Mt. 

 Rainier, Summerland Park, 6500 ft., lllTa. Okanogan Co.: gulch near 

 Tonasket, 1200 ft., 1931, 1366. Spokane Co.: Mt. Spokane, 5808 ft., 1931, 

 1497. Columbia Co.: Blue Mountains, 5000 ft., 1931, 1627a. Clallam Co.: 

 Lake Crescent, Storm King Mountain, 3500 ft., A. H. Smith 2237 (F). 

 Klickitat Co.: Goldendale, 1909, Foster 1187 (F). Washington Territory, 

 Suksdorf9 (T). 



This lichen is abundant and widely distributed in the state. 



12. Lecidea lapicida Ach. Meth. Lich. 37. 1803. 



Lichen lapicida Ach. Lichenogr. Suec. Prodro. 61. 1798. 



Thallus gray, greenish gray, or brownish gray, thick areolate, areoles 

 contiguous, flat to slightly convex, angulate. Apothecia circular, 0.4-2.0 mm. 

 in diameter, partly immersed to adnate; disk black, naked, flat becoming 

 convex; proper margin brownish black, thin, undulate, persistent; hypo- 

 thecium brown; paraphyses subcoherent, tips brownish thickened; asci 

 8-spored; spores hyaline, ellipsoid, nonseptate, 11.0-13.2 x 5.9-7.0 fx. Me- 

 dulla violet then blue with IKI. 



On rock : Whatcom Co. : Ruth Mountain, 6800 ft., 1928, L. Sunqnist 

 1946. Pierce Co. : Mt. Rainier, Yakima Park, 6300 ft., 592. Olympic Moun- 

 tains, Boulder Peak, 6000 ft., 1935, A. H. Smith 2736 (F). 



13. Lecidea lapicida var. oxydata Rabh. Deutschl. Kryplog.-Fl. 2 :84. 1845. 



Thallus tawny (R) or dull orange red, usually thinner than the species; 

 otherwise like the species. Medulla violet then blue with IKI. 



On rock : San Juan Co. : Orcas Island, Mt. Constitution, 2500 ft., 1928, 

 2014. 



The orange red color of the thallus, plus the blue color reaction of the 

 medulla with IKI makes this an easy Lecidea to identify. 



14. Lecidea latypea Ach. Meth. Lich. Suppl. 10. 1803. 

 Lecidea sabuletorum Fries Nov. Sched. Critic. 8. 1826. 



Thallus whitish gray or yellowish white, moderately thick, verrucose- 

 areolate, verrucae contiguous or scattered, flat or becoming subglobose, 

 margins crenulate, at times the thallus becomes granulose. Apothecia cir- 

 cular, 0.4-1.2 mm. in diameter, partly immersed to adnate; disk black, flat 

 to depressed, becoming convex at times ; proper margin concolorous or 

 brownish black, thick at first, becoming thin, usually persisting; hypothe- 

 cium yellowish brown or brown ; paraphyses coherent to free, tips swollen, 

 bluish black; asci 8-spored; spores hyaline, broadly ellipsoid, nonseptate, 

 11.5-16.4 X 6.2-9.9 fx. Thallus yellow with KOH, faint red with CaOCL. 



On rock : San Juan Co. : Turn Island, 1928, 2013. Yakima Co. : Dead- 

 horse Hill, 4000 ft., 1931, 959. San Juan Co. : Brown Island, 1906, Fink 

 127 (F). 



