90 LICHENS OF THE STATE OF WASHINGTON 



The shallow narrow cups on long slender podetia, with the upper part 

 usually grandular-sorediate, characterize this species. 



26. Cladonia polydactyla (Flk.) Wainio, Monogr. Clad. Univ. 1 :119. 1887. 

 Cenomyce polydactyla Flk. Deutsch. Lich, 10:13. 1815. 



Cladonia flabelliformis (Flk.) Wainio. 



Primary thallus persistent, chamois (R), cream-buff (R), brown, or 

 pale green, consisting of medium to large, crenate, lobate or irregularly 

 dissected squamules, flat to erect, margins somewhat involute, underside 

 white, sparingly sorediate. Podetia concolorous with the primary thallus, 

 solitary or clustered, slender, simple or rarely branched, cylindrical, corti- 

 cate near the base, rarely squamulose, upper part corticate, sorediate ; cups 

 narrow, gradually dilated, shallow, margins lacerate, dentate, or subentire, 

 and sometimes once or twice proliferate. Apothecia on short stalks on 

 the margins of the cups, solitary or confluent, small to medium sized, 0.5- 

 2.5 mm. across ; disk scarlet, convex. KOH+, P4-, orange red. 



On soil or old wood : Clallam Co. : near Elwha Bridge, 1940, 2886. 

 Pacific Co.: Loomis Lake, 1931, 765. Thurston Co.: Grand Mound, 1940. 

 2947. King Co. : Edgewood, 300 ft., 1931, 1976. 



Rather a common bark lichen in the state ; the large persistent primary 

 squamules help to identify it. 



27. Cladonia pyxidata (L.) Hoffm. Deutschl. Fl. 2:121. 1795. 

 Lichen pyxidata Linn. Sp. PI. 1151. 1753. 



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

 consisting of medium sized, concave or convex, crenate or digitately lobed 

 squamules, ascending, underside white or yellowish, sorediate. Podetia con- 

 colorous with the primary squamules, rather short, erect, solitary or clus- 

 tered, unbranched, cupbearing; cups deep goblet form, gradually widening 

 from the base, margins dentate or proliferate, cortex smooth and con- 

 tiguous, or warty and areolate near the base, sometimes decorticate and 

 sorediate near the top, rarely squamulose anywhere, inside of the cups 

 often lined with convex verruculae. Apothecia rare, when present, sessile 

 or borne on short stipes on the margins of the cups ; disk brown. KOH — , 

 P-t-, bright orange or red. 



On soil or decaying wood : Clallam Co. : Lake Sutherland, 490 ft., 

 1931, 1011. Pierce Co.: Mt. Rainier, Moraine Park Trail, 3300 ft., 1940, 

 3002. Kittitas Co.: Easton, 2168 ft., 1931, 854. Jefferson Co.: Mt. Olym- 

 pus, near Humes Glacier, 5500 ft., 1907, T. C. Frye 84 (W). San Juan 

 Co. : San Juan Island, Friday Harbor, 1906, Fink 70 (W). 



CI. chlorophaea and CI. pyxidata both have deep goblet form cups and a 

 positive reaction with paraphenylenediamine ; however, CI. pyxidata has a 

 smooth cortex, sometimes areolate near the base of the cups, the upper part 

 is sometimes decorticate and sorediate; while CI. chlorophaea has soredia 

 all over the surface of the cups, both inside and out. 



