LICHENS OF THE STATE OF WASHINGTON 2,7 



A. Thallus rarely reticulate-ribbed, usually pitted and wrinkled, below with 

 smaller, inflated, flat or sunken white spots, scattered through the 

 dense tomentum. 

 C. Soredia marginal and scattered, smooth on upper surface. 



4. L. verrucosa 

 C. Soredia not on the margins, but scattered, villous on upper surface. 



3. L. Hallii 



1. Loharia oregana (Tuck.) Miill. Arg. Flora 72:364. 1889. 

 Sticta oregana Tuck. Bull. Torr. Bot. Club 5 :20. 1874. 



Thallus deep olive-bufif (R) or raw umber (R), medium sized to large, 

 coriaceous or membranaceous, pitted and reticulate-ribbed, lobes broad, 

 often much divided, tips rounded, margin undulate-crenate, often fringed 

 with tooth-like lobules; below honey-yellow (R) or brownish-olive (R), 

 covered with a reticulation of fine hairs interspersed with large, naked, 

 inflated, or blister-like spots. Apothecia scattered, 1.0-4.0 mm, in diameter, 

 sessile to subpedicellate ; disk cinnamon, bay (R), chestnut-brown, or 

 almost black, flat to convex ; thalline margin thin, crenate, concolorous with 

 the thallus, finally disappearing; spores hyaline, 3-septate, fusiform or 

 acicular, 54.4-62.7 x 3.9-5.2 /x. 



On bark: King Co. : Grass Mountain Trail, 1931, 2200 ft., 1227. King- 

 Kittitas Co. : Snoqualmie Pass, 3010 ft., 1931, 810. Pierce Co. : Mt. Rainier, 

 trail to Seattle Park, 4000 ft., 1940, 3051; Mazama Ridge, 4000 ft., 1942, 

 3594. Clallam Co.: Port Angeles, Coleman's, 1914, Foster 2539 (W). 

 Whatcom Co.: Ruth Mountain, 5500 ft., 1928, Sunquist 2002 (W). King 

 Co.: Summit, 1907, Foster (W). Skamania Co.: Little Soda Springs 

 Camp Ground, 1933, Lawrence (W). Plate I, C. 



A common bark lichen in the mountains, west of the Cascades. It is 

 often confused with L. pulmonaria, but it can be distinguished by the 

 undulate-crenate margin of the thallus, which is often fringed with tooth- 

 like lobules ; soredia entirely lacking, often present on L. pulmonaria. 



2. Lobaria pulmonaria (L.) Hofifm. Deutschl. Fl. :146. 1795. Lichen pul- 

 monarius Linn., Spec. PI. 1146. 1753, Sticta pulmonaria Birola, Fl, 

 Ascon, 2:188, 1808. 



Thallus tawny olive (R), antique brown (R), chamois (R), or green- 

 ish gray, medium sized to very large, thin leathery or coriaceous, pitted and 

 reticulate-ribbed, lobes narrow, elongated, tips obtuse or retuse-truncate, 

 margins and ridges often sorediate or isidiose; below chamois (R) or 

 brown, covered with a close nap of tomentum, interspersed with large, 

 naked, inflated, or blister-like spots, Apothecia rather rare, scattered, or sub- 

 marginal, 1.0-6.0 mm. in diameter, sessile to subpedicellate; thalline margin 

 thin, entire to wrinkled, concolorous with the thallus, finally disappearing ; 

 spores hyaline, cymbiform, 1 -3-septate, 23.2-33.0 x 6.6-7.2 fi. 



On bark and rock: Pierce Co.: Silver Springs, 2600 ft., 1940, 3110; 

 White River Camp, 3000 ft., 1928, 1847. King-Kittitas Co. : Snoqualmie 



