LICHENS OF THE STATE OF WASHINGTON 141 



On trees: Pacific Co.: Loomis Lake, 1931, 438. Grays Harbor Co.: 

 Lake Quinault, 1931, 300 ft., 1212. Wahkiakum Co.: Cathlamet, 1940, 

 2916. Clallam Co.: Elwha River Trail, 1500 ft., 1940, 2931. Kitsap Co.: 

 Hidden Ranch, near Bremerton, 213 ft., 1940, 3284. Pierce Co.: Mt. 

 Rainier, trail to Seattle Park, 4000 ft., 1940, 3050. Wahkiakum Co. : Cath- 

 lamet, 1907, Foster 501 (F). Grays Harbor Co., Foster 912 (F). 



The deeply lacunose-reticulate nature of the thallus makes this an easy 

 lichen to recognize. 



6. Cetraria stenophylla (Tuck.) Merrill, Bryol. 13:27. 1913. 



Cetraria lacunose var. stenophylla Tuck. Syn. N. Am. Lich. 1 :35. 1882. 



Thallus olive-buff (R), straw yellow (R), or ivory yellow (R), lobes 

 narrow, elongated, cartilaginous-coriaceous, stiff and rigid, channeled, 

 often crowded, margins ascending, often entire, torn, or torn-crenate, some- 

 times black, tuberculate ; below usually white, sometimes brown or black. 

 Apothecia chestnut-brown (R), concave, surface undulate; thalline margin 

 entire, thin, sometimes disappearing; spores hyaline, subglobose or ellip- 

 soid, nonseptate, 4.9-8.0 x 3.3-5.0 /*. Thallus shows no color change with 

 IKL 



On trees : San Juan Co. : Orcas Island, Mt. Constitution, 2200 ft., 1906, 

 fruiting. Fink (F) ; 1904, Frye (F) ; Mt. Constitution, 1907, Foster 

 564 (F). 



This species can be separated easily from C. Tuckermani by the reticu- 

 late-lacunose thallus, the entire margin, and the frequent apothecia. It 

 occurs much more rarely than C. Tuckermani in the state. 



7. Cetraria pinastri (Scop.) Rohl. Deutschl. FI. 3, Abt. 2, 113, 1813. 

 Lichen pinastri Scop. Fl. Carniol. 2nd ed., 2:382. 1772. 

 Cetraria juniperina var. pinastri (Scop.) Ach. 



Thallus some shade of yellow, lemon yellow (R), lemon chrome (R), 

 or antimony yellow (R), membranaceous, slightly lacunose, lobes flattened, 

 roundish, sometimes imbricated, margins often erect, crenate, and abun- 

 dantly bright yellow, sorediate; below usually the same color, sometimes 

 slightly darker, rarely ever found fruiting, sterile in this state. 



On trees : Yakima Co. : Lodge Pole Pine Camp, 3500 ft., 1940, 3311. 



So far as the writer is able to find out, this is the only collection that has 

 ever been made of this species in the state. It is easily recognized by the 

 bright yellow color and the sorediate margins. 



8. Cetraria scutata (Wulf.) Poetsch, in Poetsch and Schiderm. Syst. 



Aufzahl. samenlos. PI. 262. 1872. 

 Lichen scutatus Wulf., in Jacq. Coll. Bot. 4 :268. 1790. 

 Cetraria saepincola var. chlorophylla Schaer. 

 Cetraria chlorophylla (Willd.) Wainio. 



Thallus olive green, olive-brown (R), or snuff brown (R), lobes 

 numerous, crowded, short, prostrate or ascending, smooth or slightly rough, 



