LICHENS OF THE STATE OF WASHINGTON 165 



pruinose ; thalHne margin at first thick, entire, or flexuous, later disappear- 

 ing; spores hyaline, ellipsoid, polar-bilocular, 15.0-23.0 x 8.0-12.0 /x. Epi- 

 thecium dull red with KOH, no color change of thallus with KOH. 



On mosses, lichens, or soil: Kittitas Co.: Roslyn, 2800 ft., 1931, 899h. 

 Yakima Co.: Boulder Cave, 3000 ft., 1931, 1158. Whatcom Co.: Mt. 

 Baker, 6000 ft., Herre (1917). 



6. Caloplaca pyracea (Ach.) Th. Fr. Kgl. Sten. Vet.-Akad. Handl. 7:25. 



1867. 

 Parmelia cerina var. pyracea Ach. Meth. 1176. 1803. 

 Placodium pyraceum (Ach.) Anzi. 

 Placodium cerinum var. pyraceum (Ach.) Branth. & Rostr. 



Thallus olive-brown (R) or grayish- white, scurf y-granulose, very thin, 

 often disappearing. Apothecia numerous, often clustered, 0.2-0.7 mm. in 

 diameter, adnate to sessile ; disk yellow or orange, flat to convex ; thalline 

 margin paler than disk, often disappearing ; spores hyaline, oblong ellipsoid, 

 polar-bilocular, 9.9-2.2 x 4.0-7.0 ix. Epithecium crimson with KOH, no 

 color change of the thallus with KOH. 



On bark, old wood, and rocks : Whitman Co. : Tekoa Mountains, 2900 

 ft, 1931, 1592. Clallam Co.: Dungeness, 1914, Foster 2614 (W). Thurston 

 Co.: Gate, 1912, Foster 2011 (W). 



7. Caloplaca elegans (Link) Th. Fr. Lich. Scand. 1 :168. 1871-74. 

 Lichen elegans Link, Ann. der Naturg. 1 :37, 1791. 

 Placodium elegans (Link) DC. 



Thallus flame-scarlet (R), ochraceous-orange (R), or yellow, foliose 

 or squamulose, radiate-stellate or orbicular, appressed, thick, lobes linear, 

 much branched, knotted and twisted, surface slightly pitted or lacunose, 

 margins often lobed. Apothecia 0.4-2.0 mm. in diameter, subsessile to 

 sessile; disk concolorous with the thallus, concave to slightly convex; 

 thalline margin slightly paler than the disk, entire or slightly crenulate; 

 spores hyaline, ovoid-ellipsoid, polar-bilocular, 9.0-16.0 x 5.0-9.0 /x. Both 

 epithecium and thallus turn a very bright red with KOH. 



On rocks: Okanogan Co.: near Twisp, 5000 ft., 1931, 1302. Chelan 

 Co. : Zena, 800 ft., 1931, 1332. Yakima Co.: Boulder Cave, 3000 ft., 1932. 

 Pierce Co.: Mt. Rainier, Camp Muir, 9000 ft., 1909, Comm. Kneeland, 

 Foster (F). Ferry Co.: Republic, 1912, Foster 2363b (F). 



8. Caloplaca lobulata (Flk.) Hellb. Bih. Kgl. Sven. 21 :67. 1896. 

 Lecanora lobulata Flk. in Sprgl. Neue Entd. 1 :219. 1820. 



Thallus yellow, ochraceous-orange (R), or rufous, verrucose, or sub- 

 areolate, sometimes composed of minute, slightly convex lobules, effuse, 

 thin, margin when present of short crenate lobules. Apothecia 0.2-0.8 mm. 

 in diameter, sessile ; disk concolorous with the thallus, flat ; thalline margin 



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