154 LICHENS OF THE STATE OF WASHINGTON 



Lichen normoericus Gunn. Fl. Norveg. 2:123. 1776. 

 Cetraria tristis (Web.) Fries. 



Thallus black, sometimes brownish towards the base, small, fruticose, 

 erect, tufted, stiff, rigid, and tenacious, sparingly branched, branches re- 

 peatedly divided towards the tips, margins toothed. Apothecia numerous, . 

 subterminal, 1-6 mm. in diameter, sessile; disk black to very dark brown, 

 flat to convex ; thalline margin smooth or toothed ; spores hyaline, ellipsoid, 

 nonseptate, 8.4-10.0 x 4.5-5.0 fi. 



On rocks in the alpine life zone : Pierce Co. : Mt. Rainier National 

 Park, Burroughs Mountain, 7300 ft., 1934, 2485. Olympic Mountains, Hur- 

 ricane Ridge, 6000 ft., A. H. Smith 2394 (M). Tatoosh Range, Pinnacle 

 Peak, 7200 ft., 1909, Foster 1055 (F). Plate IX, C. 



3. C ornicularia tenuissima (L.) Zahlbr. Annal. Naturh. Museum Wien. 

 42:64. 1928. 

 Lichen tennuissimus Linn. Sp. PI. 1145. 1753. 

 Cetraria aciileata (Schreb.) Fries. 



Thallus pale brown, chestnut-brown (R), or black, fruticose, erect, or 

 somewhat prostrate, stiff and rigid, often shiny, slightly lacunose, sub- 

 terete to flattened, almost hollow with some fine cottony medulla remain- 

 ing, much divaricately branched, becoming fastigiate, branches furcate, 

 tips spinulose. Apothecia rare, not seen on any Washington specimens, sub- 

 terminal, 2-8 mm. in diameter, sessile; disk chestnut-brown (R) or dark 

 brown, concave to convex, surface irregular; thalline margin toothed or 

 spiny; spores hyaline, ellipsoid, nonseptate, 6.5-10.0 x 3.3-4.0 jn. 



On rock or on thin layer of soil over rock : San Juan Co. : Orcas Island, 

 Mt. Constitution, 2500 ft., 1928, 2082; San Juan Island, near Trout Lake, 

 1940, 3225; Brown Island, 1940, 3202; Waldron Island, 1906, Fink 214 

 (F). Ferry Co.: RepubHc, Maye's Butte, 1913, Foster 2284 (W). 



The only species of Cornicularia that is at all plentiful in the state. It is 

 rather abundant in the few regions in which it has been collected. Plate 

 IX, D. 



61. Ramalina Ach. Lichenogr. Univers. 122. 1810. 



Thallus various shades of greenish gray, yellowish green, pale yellow 

 or white, fruticose, cartilaginous, stiff and rigid, erect or rarely pendent, 

 flattened, subterete or terete, much branched, more or less dichotomously, 

 differentiated into a plectenchymatous cortex, surrounding an algal layer, 

 and an abundant cottony medulla, some of the hyphae uniting to form 

 strong cords, or hyphae very scarce and attached to the inner surface of the 

 cortex, center hollow, firmly attached to substratum. Apothecia circular, 

 terminal or marginal, sessile or subpedicellate ; disk usually the same color 

 as the thallus, concave to convex ; thalline margin sometimes disappearing ; 

 hypothecium hyaline ; paraphyses rarely branched, agglutinated ; asci 

 8-spored; spores hyaline, straight or curved, 1 -septate or rarely 3-septate. 



