LICHENS OF THE STATE OF WASHINGTON 85 



margins dentate to torn or irregularly proliferate, mouths sorediate. Apo- 

 thecia on the margins of the cups or on the tips of the proliferations, solitary 

 or clustered, small to medium sized, 0.5-3.0 mm. across; disk scarlet, 

 irregularly convex. KOH — , P — , no color changes with either. 



On soil and decaying logs : Pierce Co. : Mt. Rainier, Berkeley Park, 

 6000 ft., 1940, 3011. Yakima Co.: Little Naches, 2557 ft., 1931, 1002. 



The stout podetia and the abruptly dilated cups, with dentate to torn or 

 irregularly proliferate margins and sorediate mouths, make this a dis- 

 tinctive Cladonia. 



15. Cladonia digitata (L.) Schaer. Lich. Helv. Spic. 22. 1823, 

 Lichen digitatus Linn. Sp. PI. 1152. 1753, 



Cladonia digitata (L.) Hoffm. 



Primary thallus usually persistent, grayish green, grayish olive (R) or 

 Isabella color (R), consisting of crenate or lacinate-lobed, small or large 

 and prominent squamules, flat to often strongly ascending, involute, often 

 markedly sorediate on the margins, underside white, sorediate. Podetia 

 whitish, yellowish-white, or greenish-gray, usually clustered, rather short, 

 erect, or ascending, cylindrical, simple, rarely branched, sometimes corti- 

 cate throughout, more often corticate only near the base, upper part soredi- 

 ate, sometimes squamulose near the base; cups medium sized, dilated 

 abruptly, margin dentate, proliferate, or almost entire. Apothecia solitary 

 or clustered on the tips of the proliferations or rarely on the margins of the 

 cups, small to medium sized, 0.5-4.0 mm. across; disk scarlet, irregularly 

 convex, KOH-f-, P+, deep reddish orange. 



On soil and decaying logs: Kittitas Co.: Easton, 2168 ft., 1931, 850. 

 San Juan Co.: Orcas Island, Turtle Back Mountain, 1906, Fink 460 

 (W). Puget Sound, 1865, Dr. Torrey (T). 



The short podetia, with apothecia borne on the proliferations, help to 

 characterize this species. 



16. Cladonia fimbriata (L.) Fries Lich. Eur. Ref. 222. 1831. 

 Lichen jimbriatus Linn. Sp. PI. 1152. 1753. 



Cladonia fimbriata var. simplex f. minor Wainio. 



Primary thallus usually persistent, gray, olive-buff (R), or light brown, 

 consisting of medium sized, digitately lobate squamules, flat to ascending, 

 margins involute, underside white, sorediate, especially near the margin. 

 Podetia concolorous with the primary thallus, solitary or clustered, erect to 

 irregularly curved, cylindrical, usually decorticate and sorediate throughout, 

 rarely corticate near the base and below the cups, cortex areolate, warty 

 without squamules or rarely squamulose near the base ; cups well developed, 

 gradually dilated or occasionally flaring abruptly at the mouth, often soredi- 

 ate inside, margins dentate. Apothecia sessile or with a short stalk on the 

 margin of the cup, small and inconspicuous ; disk brown or reddish brown. 

 KOH — , P+, bright orange red. 



