LICHENS OF THE STATE OF WASHINGTON 121 



American River Camp, 2800 ft., 1931, 955. Lincoln Co. : Davenport, 2450 

 ft., 1931, 1510a. 



A very common bark lichen, easily recognized by the large apothecia, 

 the thick, prominent margin, and the granular and often wrinkled disk. 



2. Ochrolechia upsaliensis (L.) Mass. Ricerch. Auton. 31. 1852. 

 Lichen upsaliensis Linn. Sp. PI. 1142. 1753. 

 Ochrolechia pallescens (L.) Mass. 



Thallus v^hite or gray, determinate or effuse, rather thick, of smooth 

 areoles or chinky and plicate, often becoming tuberculate ; no color change 

 with KOH or CaOCla. Apothecia circular, medium, 0.5-1.5 mm. in diam- 

 eter,, adnate; disk white or yellowish white, densely granular pruinose, 

 concave to flat ; thalline margin concolorous with the thallus, thick, promi- 

 nent, sometimes rough; asci 4-8-spored; spores hyaline, large, ellipsoid, 

 nonseptate, 40.0-60.0 x 23.0-35.0 /x. 



Encrusting mosses on soil or rock : San Juan Co. : Shaw Island, 1928, 

 2029. Kittitas Co. : Roslyn, 2800 ft., 1931, 1798. Ferry Co. : Republic, 2650 

 ft., 1931, 1405; Gibraltar Mt., 3783 ft., 1940, 3161. Whitman Co. : Pullman, 

 2550 ft., 1931, 1581. Olympic Mountains, Boulder Peak, 6000 ft., 1935, 

 A. H. Smith 2910 (F). Chelan-Kittitas Co.: Blewett Pass, 1919, /. M. 

 Grant (WTU). 



Often found encrusting Selaginella as well as mosses, this, its most fre- 

 quent habitat makes it an easy lichen to know. 



48. Icmadophila Trevis. in Revista Periodic. Lavori L R. Accad. Padova. 



267. 1851-52. 



Thallus crustose, no differentiation into definite layers. Apothecia cir- 

 cular, often somewhat angular, sessile to short stipitate, both proper and 

 thalline margins present, thalline margin soon disappearing; hypothecium 

 hyaline; paraphyses unbranched, and separate; asci cylindrical; 8-spored, 

 spores hyaline, fusiform, 1-3-septate. 



Alga Protococcus. 



1. Icmadophila ericetorum (L.) Zahlbr. in Wiss. Mitteilung. Bosnien and 

 Hercegov. 3 :605. 1895. 

 Lichen ericetorum Linn. Sp. PI. 1141. 1753. 

 Baeomyces aeruginosus (Scop.) DC. 



Thallus greenish gray, silver gray, tea green (R), or olive-buff (R), 

 very thin and smooth, resembling a layer of paint, or thick and rough, form- 

 ing a granulose or warty crust, rarely tartareous. Apothecia circular or 

 angular in shape, medium or large, 0.5-3.0 mm. in diameter, adnate to 

 sessile or substipitate ; disk pale flesh color (R), or rosy pink, concave, flat 

 or convex, wrinkled ; proper margin thin, thalline margin concolorous with 

 the thallus, often disappearing; spores hyaline, oblong-fusiform, 1-3-sep- 

 tate, 18.4-30.0 X 4.0-6.0 [i. 



Encrusting mosses and old logs: Pacific Co.: Oysterville, 1931, 750. 

 San Juan Co. : Orcas Island, Mt. Constitution, 2500 ft., 1931, 2031. Clallam 



