56 LICHENS OF THE STATE OF WASHINGTON 



9. Lecidea cyanea (Ach.) Rohl. Deutschl. Fl. 2 Abt. 3 :32. 1813. 

 Lecidea lapicida var. cyanea Ach. Meth. Lich. 38. 1803. 

 Lecidea tessellata (Ach.) Flk. 



Thallus gray or greenish gray, rimose-areolate in round to angular 

 areoles on a more or less prominent black hypothallus. Apothecia circular 

 to slightly angular, 0.5-2.0 mm. in diameter, immersed to adnate; disk 

 black and horny, at first pruinose, flat to convex ; proper margin thin ele- 

 vated, persistent, finally flexuous; hypothecium hyaline; paraphyses co- 

 herent, tips brownish black; asci 8-spored; spores hyahne, ellipsoid, non- 

 septate, 6-8.5 X 4.0-6.0 jx. 



On rock : Whatcom Co. : Ruth Mountain, 6800 ft., 1928, Sunquist 1877. 

 Yakima Co.: gulch near Naches, 1350 ft., 1931, 906; 1940, 3174. Chelan 

 Co.: butte near Chelan, 2000 ft., 1931, 1376. Okanogan Co.: gulch near 

 Tonasket, 1200 ft, 1931, 1379. Columbia Co.: New Hope, 1500 ft., 1931, 

 1565. Garfield Co. : Pomeroy, 1860 ft., 1931, 1571. 



The black apothecia on the gray thallus make this Lecidea resemble a 

 mosaic pavement when examined under a hand lens. 



10. Lecidea elaeochroma f. geographica (Bagl.) Zahlbr. Cat. Lich. Univers. 

 3:571. 1925. 



Lecidea enteroleuca var. geographica Bagl. in Memor. della Royal Acad. 

 Sci. Torino, ser. 2, 17:421. 1857. 



Thallus dark olive-bufif (R) or citrine-drab (R), small patches of 

 minute crumb-like granules scattered on a black hypothallus and bordered 

 by a conspicuous black hypothalline line. Apothecia circular, 0.2-0.8 mm. in 

 diameter, immersed to adnate; disk black, concave to flat; proper margin 

 thin, high, black, finally disappearing; hypothecium dark yellowish brown; 

 paraphyses free, slightly enlarged at the tips ; asci 8-spored ; spores hyaline, 

 ellipsoid, nonseptate, 13.2-15.0 x 7.0-8.0 ix. 



On bark: Pacific Co.: Chinook, 1931, 792. Clallam Co.: Elwha River 

 valley, near Port Angeles, 1940, 2898. Mason Co.: Shelton, 1931, 1217. 



This is an easily determined bark lichen because of the conspicuous black 

 hypothalline lines and dark hypothecium. 



11. Lecidea fuscoatra (L.) Ach. Meth. Lich. 44. 1803. 

 Lichen fuscoater Linn. Sp. PI. 1140. 1753. 



Thallus brown, reddish brown, blackish brown, squamulose-areolate, 

 areoles thin, round, lobulate, angulate, flat, sometimes slightly concave or 

 convex, edges blackish gray, usually slightly raised, scattered or rather 

 closely crowded, black hypothallus often very distinct. Apothecia circular, 

 sometimes angular, 0.5-1.5 mm. in diameter, adnate; disk black, slightly 

 pruinose at first, becoming naked, flat to convex ; proper margin black, thin, 

 finally disappearing; hypothecium pale brown or dark brown; paraphyses 

 coherent, tips dark colored ; asci 8-spored ; spores hyaline, ellipsoid, non- 

 septate, 9.9-13.2 x 5.0-6.0 /x. 



