LICHENS OF THE STATE OF WASHINGTON 91 



28. Cladonia pyxidata var. pocillum (Ach.) Flot. Linnaea 17:19. 1843. 

 Baeomyces pocillum Ach. Meth. Lich. 336. 1803. 



Primary thallus consisting of thick, round lobed, adnate, rarely ascend- 

 ing, squamules, crowded, forming a pale brown or greenish brown crust, 

 usually sterile ; otherwise hke the species. 



On soil: Clallam Co.: Lake Sutherland, 490 ft., 1931, 1017. King Co.: 

 Edgewood, 300 ft., 1931, 1821. Pierce Co. : Mt. Rainier, Van Trump Park, 

 5000 ft., 1942, 3618. 



29. Cladonia squamosa (Scop.) Hofifm. Deutschl. Fl. 2:125. 1796. 

 Lichen squamosus Scop. Fl. Carn. 2nd ed., 2:368. 1772. 



Primary thallus usually persistent, Hght brownish olive (R) or green- 

 ish gray, consisting of medium sized, circular, crenate to sinuate, squam- 

 ules, flat to ascending, underside white. Podetia about the same color as the 

 primary thallus, clustered, cylindrical, erect or ascending, flexuous, irregu- 

 larly to radiately branched, cortex has a tendency to disintegrate, often 

 becoming areolate toward the base, sorediate on the upper part, usually 

 squamulose, axils often open, with or without cups ; cups may be wide open 

 to almost closed, margins entire to repeatedly proliferate. Apothecia 

 small, usually clustered on the margins of the cups, or borne on the tips of 

 the proliferations, or on the tips of the branches; disks pale or darker 

 brown. KOH — , P-f, pale yellow or ochraceous-buff (R). 



On soil, on thin layer of soil over rocks, on rocks, or on old wood : San 

 Juan Co.: San Juan Island, Friday Harbor, 1940, 3253. Clallam Co.: 

 Olympic Hot Springs, 1935, A. H. Smith 2256 (F). Skagit Co.: Ana- 

 cortes, 1906, T. C. Frye (W). 



The negative reaction with KOH readily separates this species from 

 CI. subsquamosa. 



30. Cladonia subsquamosa (Nyl.) Wainio Monogr. Clad. Univ. 1 : 445. 

 1887. 



Cladonia delicata var. subsquamosa Nyl. in Leight. Not. Lichenol. 

 11:407. 1866. 



Primary thallus not much in evidence, soon disappearing, greenish gray 

 or brownish-olive (R), consisting of small to medium sized, oblong, deeply 

 lobed squamules, with irregular margins, underside white. Podetia about 

 the same color as the primary thallus, sometimes a little lighter, often 

 crowded, erect, slender, subcylindrical or cylindrical, usually hollow, simple 

 or irregularly branched, axils sometimes perforate, often dying at the base, 

 cortex rough, warty, or areolate, or almost entirely lacking, squamulose 

 only toward the base; cups when present, small, perforate, margins pro- 

 liferate with short, slender, rough branches. Apothecia solitary or clustered 

 on the tips of branches; disk small, brown. KOH-j-, bright yellow, turning 

 pinkish red, P-f, orange red. 



