LICHENS OF THE STATE OF WASHINGTON 99 



Thallus chocolate, dark brown, or black, usually medium sized, some- 

 times small, one-leaved, round to irregular in shape, sparingly lobed, sur- 

 face smooth, wrinkled, pustulose, or papillose, rarely perforate, margins 

 torn and jagged ; below pale or dark brown, or black with a grayish cast, 

 smooth and somewhat pitted, without fibrils. Apothecia circular, angulate, 

 or oblong, 0.5-2.0 mm. in diameter, adnate or subsessile ; disk black, plicate, 

 flat to convex; proper margin thin; hypothecium dark brown; asci 

 8-spored ; spores hyaline, ellipsoid, nonseptate, 10.0-13.2 x 5.0-6.6 /x. 



On rock: Pierce Co. : Mt. Rainier, Berkeley Park, 6000 ft., 1931, 650a; 

 Burroughs Mountain, 7300 ft., 1931, 608. Chelan Co.: White Rock Camp, 

 2200 ft., 1931, 1052; Rainbow Trail, 3500 ft., 1931, 1248a. Okanogan Co.: 

 Tonasket, 1200 ft., 1931, 1380. Ferry Co.: Mt. Gibraltar, 3100 ft., 1940, 

 S168. Lincoln Co.: Davenport, 2450 ft., 1931, 1509. 



A common species, rather widely distributed east of the Cascades. 



6. Umbilicaria phaea Tuck. Lich. Calif. 15. 1866. 



Gyrophora phaea Nyl. in Hue Nour. Archiv. Mus. ser. 3. 3 :37. 1891. 



Thallus grayish brown or tawny brown, small or medium sized, some- 

 times very small, one-leaved, surface smooth ; below darker in color, smooth 

 without fibrils. Apothecia numerous, circular to slightly angular, 0.5-2.0 

 mm. in diameter, immersed or adnate ; disk black, pHcate, convex ; proper 

 margin thin ; hypothecium brown ; asci 8-spored ; spores hyaline or rarely 

 brown, ellipsoid, nonseptate, 10.0-16.0 x 5.0-10.0 /x. 



On rock: Chelan Co.: Merritt, 2186 ft., 1931, 1086b. Yakima Co.: 

 near Naches, Gleason's Ranch, 1350 ft., 1931, 900. Okanogan Co.: Tonas- 

 ket, 1200 ft., 1931, 1365. Whitman Co.: Pullman, 2500 ft., 1931, 1583. 

 Asotin Co. : Buffalo Rock, Snake River Canyon, 1927, G. N. Jones 3054 

 (W). San Juan Co.: Blakely Island, 1906, Fink 426 (W). Kittitas Co.: 

 Vantage Bridge, 1942, P. F. Scholander (F). 



Another species widely distributed east of the Cascades. The grayish 

 brown color, combined with the numerous, rather crowded apothecia, help 

 to identify this Umbilicaria. 



7. Umbilicaria polyphylla (L.) Baumg. Fl. Lipsiens. 571. 1790. 

 Lichen polyphyllus Linn. Sp. PI. 1150. 1753. 



Gyrophora polyphylla (L.) Funck. 



Thallus dark brown or black, small or medium sized, many-leaved, very 

 irregular in shape, deeply and irregularly lobed, margin crenate or dentate ; 

 below darker in color, almost always dull black, smooth or granulose, with- 

 out fibrils. Apothecia very rare; I have seen no fruiting Washington 

 specimen. 



On rock : San Juan Co. : San Juan Island, Friday Harbor, 1928, 2024. 

 Chelan Co.: White Rock Camp, 2200 ft., 1931, 1052a; Merritt, 2186 ft., 

 1931, 1086. Ferry Co. : Laurier, 1644 ft., 1931, 1421. Whitman Co. : Pull- 

 man, 1900, R. K. Beattie 46 (F). 



