66 LICHENS OF THE STATE OF WASHINGTON 



B. Disk often more than 1.0 mm. in diameter, tips of paraphyses hyaline, 

 no limiting black hypothallus 2. C. sphaeroides 



B. Disk never more than 1.0 mm. in diameter, tips of paraphyses pale 

 brown, limiting black hypothallus present 3. C. tricolor 



1. Catillaria atro purpurea (Schaer.) Th. Fr. Lich. Scand. 1 :565. 1874. 

 Lecidea sphaeroides var, atropurpurea Schaer, Lich. Helvel. Spicil. 

 sect.4-5, 165. 1833. 



Biatora atropurpurea ( Schaer. ) Hepp. 



Thallus grayish green or dusky drab (R), thin, smooth, soon scurfy 

 and granulate, rarely sorediate, sometimes obsolete. Apothecia scattered, 

 circular, very small, 0.4-0.8 mm. in diameter, slightly immersed or adnate ; 

 disk reddish brown or black, flat to convex; proper margin tumid, dis- 

 appearing ; hypothecium pale yellow ; paraphyses free, pliable ; spores hya- 

 line, ellipsoid, 1-septate, one cell narrower than the other, 9.0-16 x 3.5-5.9 /t. 



On bark of trees and old wood : King-Kittitas Co. : Snoqualmie Pass, 

 3010 ft., 1931, 816. San Juan Co. : Wasp Island, 1906, Fink 180 (W). 



2. Catillaria sphaeroides (Mass.) Schuler, Zur Flechtfl. von Fiume, 36. 

 1902. 



Biatorina sphaeroides Mass. Ricerch. Auton. Lich. 135. 1852. 



Thallus white, grayish white, or greenish white, effuse or thin, finely 

 granulose often forming a crust. Apothecia scattered, circular, 0.3-1.0 mm. 

 in diameter, adnate or sessile; disk yellowish flesh color, pale reddish 

 brown, or orange cinnamon (R), flat to convex; proper margin not visible; 

 hypothecium hyaline; paraphyses free with knob-shaped tips; spores 

 hyaline, ellipsoid, 1-septate, 10.0-13.2 x 2.9-3.3 /x. 



On moss or wood : San Juan Co. : Turn Island, 1928, 2018. Ferry Co. : 

 Republic, 1912, Foster (F). 



3. Catillaria tricolor (With.) Th. Fr. Lich. Scand. 1 :574. 1871-1874. 

 Lichen tricolor With. Bot. arr. Brit. PI. 3rd ed., 4:23. 1796. 

 Biatora mixta Fries. 



Thallus grayish white, smooth to slightly granulate, chinky to warty, 

 usually with a limiting and decussating black hypothallus. Apothecia scat- 

 tered, circular, 0.2-0.6 mm. in diameter, adnate; disk flesh color (R), red- 

 dish brown turning black, flat to slightly convex ; proper margin paler, per- 

 sistent for a long time, finally disappearing; hypothecium hyaline; para- 

 physes slender, free, thread-like, with knob-shaped slightly brownish tips ; 

 spores hyaline, ellipsoid or fusiform, 1-septate, 9.0-16.0 x 2.0-6.6 /*. 



On bark and dead wood: San Juan Co.: Pt. Caution, 1928, 1936; 

 Brown Island, 1928, 2020; Friday Harbor, 1906, Fink 13, 60, 141 (W). 



34. Bacidia (DeNot.) Zahlbr. Nat. Pfl. Teil 1, Abt. 1, 135. 1907. DeNot., in 



Giorn. Bot. Ital. 2:189. 1846. 



