LICHENS OF THE STATE OF WASHINGTON 75 



thin effuse crust, granulose becoming scurfy squamulose or crenate- 

 lobulate. Podetia flattened and furrowed, rarely branched near the tips, 

 granulose or corticate, 1-3 mm. in length, sometimes very short or entirely 

 wanting, concolorous with the thallus. Apothecia subglobose or flattened, 

 becoming flexuous, 1.0-1.5 mm. in diameter; disk pale flesh color (R), 

 strongly convex, proper margin soon disappearing; asci 8-spored; spores 

 hyaline, ellipsoid, nonseptate, 6.0-15.0 x 3.0-4.0 /x. 



On soil or rock: Wahkiakum Co.: Cathlamet, 1907, Foster 486 (W), 

 this specimen determined as Baeomyces roseus by G. K. Merrill. Herre 

 (1917) reports this species as common in the wooded lowlands of What- 

 com Co., Clallam Co. : Sequim, 1918, /. M. Grant (F). 



39. Pilophoron Th. Fr. Stereo, and Pilophor. Comment. 40. 1857. 



Primary thallus crustose, without differentiation into definite layers, 

 attached to the substratum by hyphal rhizoids. Podetia arising from the 

 primary thallus, decorticate and usually granulose, covered with thalloid 

 warts, the center consisting of loosely packed, longitudinally extending 

 hyphae, surrounded by a region of densely packed hyphae. Apothecia ter- 

 minal, globose, subglobose, or subcylindrical, black; proper margin soon 

 disappearing ; hypothecium brown ; paraphyses unbranched, septate, dark 

 blue and thickened at the tips ; asci 8-spored ; spores hyaline, nonseptate. 



Alga Protococcus. 



A. Apothecia large, cylindrical or almost cylindrical 2. P. Hallii 



A. Apothecia smaller, globose or subglobose 1. P. cereolus 



1. Pilophoron cereolus (Ach.) Th. Fr. Lich. Scand. 1:55. 1871-74. 

 Lichen cereolus Ach. Lichenogr. Suec. Prodro. 89. 1798. 



^&' 



Primary thallus greenish gray, gray, or light brownish oHve, forming a 

 warty or powdery crust. Podetia arising from the primary thallus, erect, 

 cylindrical, simple or branched, surface warty or powdery. Apothecia ter- 

 minal, black, 0.4-2.0 mm. in diameter, subglobose; asci 8-spored; spores 

 hyaline, ellipsoid, nonseptate, 16.0-23.0 x 5.0-8.0 fx. 



On rock or on soil over rock : Clallam Co. : Lake Crescent, 483 ft., 1931, 

 1035. Pacific Co. : Ft. Canby, 1930, 467. San Juan Co. : Orcas Island, Mt. 

 Constitution, 2500 ft., 1931, 2079. Whatcom Co. : Baker Lake, 1941, E. B. 

 Mains, 6219 (F). 



An odd, unusual looking lichen, easily recognized, that always makes 

 me think of a black headed pin, found only west of the Cascades. 



2. Pilophoron Hallii (Tuck.) Wainio Bot. Mag. Tokyo 35:59. 1921. 

 Pilophoron cereolus b. Hallii Tuck. Syn. N. Am. Lich. 1 :235. 1882. 



Primary thallus greenish with green stripes, forming a warty or pow- 

 dery crust. Podetia greenish gray or light brownish olive (R), arising from 

 the primary thallus, erect, subcylindrical, solid, short and stout, seldom 

 branched, minutely granulose or powdery. Apothecia terminal, vertically 



