LICHENS OF THE STATE OF WASHINGTON 47 



Juan Co.: San Juan Island, Friday Harbor, 1906, Fink 20 (W). Jefferson 

 Co. : Elwha River Valley, 4000 ft., 1907, Frye 51 (W). Clallam Co. : Dun- 

 geness, 1913, Foster 2546 (W). Spokane Co.: Spokane, near the Nata- 

 torium, 1911, T. A. Bonser (W). 



2. Peltigera venosa (L.) Baumg. Fl. Lips. 561. 1790. Lichen venosus 

 Linn. Sp. PI. 1148. 1753. 



Thallus pale olive-green, ashy, or brownish, bright green when wet, 

 small, fan-shaped, smooth, margins wavy, ascending ; below whitish, reticu- 

 lated with brownish black veins, often spreading together into a close nap, 

 at times cephalodia occur on the veins. Apothecia marginal, 2.0-5.5 mm. in 

 diameter, round, horizontal, adnate; disk reddish brown to almost black, 

 flat; proper margin slightly toothed, soon disappearing; asci 8-spored; 

 spores hyaline or brownish, fusiform, 3-septate, 33.0-42.9 x 6.6-9.2 ^. 



On soil: San Juan Co.: Cypress Island, 1928, 1856; Orcas Island, Mt. 

 Constitution, 2500 ft., 1928, 2009. King Co. : Richmond Highlands, 300 ft., 

 1928, 1855. Yakima Co.: Bumping Lake, 3400 ft., 1931, 933. Okanogan 

 Co.: Twisp Summit, 6066 ft., 1931, 1319. Chelan Co.: Rainbow Trail, 

 3800 ft., 1931, 1263. Stevens Co.: Boyds, 1470 ft., 1931, 1440. Jefferson 

 Co. : Olympic Mountains, near foot of Humes Glacier, 5000 ft., 1907, Frye 

 17 (W). Clallam Co.: Port Angeles, 1914, Foster 2620 (W). Asotin Co.: 

 Blue Mountains, 1929, Jones (W). 



A common soil lichen widely distributed over the state, easily recog- 

 nized by the small fan-shaped thallus that turns bright green when wet. 



3. Peltigera canina (L.) Willd. Fl. Berol. Prodro. 347. 1787. 

 Lichen caninus Linn. Sp. PI. 1149. 1753. 



Thallus greenish gray, ashy, or various shades of brown, medium sized 

 to large, partially covered with trichomatic hyphae, a hair-like down, espe- 

 cially toward the tips of the lobes, margins irregularly crenate, ascending ; 

 below whitish, rarely brown, with veins of same color or darker, with scat- 

 tered long whitish rhizoids. Apothecia large, 4.0-14.0 mm. across, round, 

 horizontal, or commonly revolute, borne on the tips of extended lobules, that 

 are often suberect, adnate; disk reddish brown to dark brown; proper 

 margin becoming wavy or crenate ; asci 8-spored ; spores hyaline, fusiform, 

 elongate, 3-7-septate, 46.2-59.4 x 4.0-5.9 p.. 



On soil, mosses, or decaying logs : San Juan Co. : Cypress Island, 1928, 

 1857. Pacific Co. : Nahcotta, 1930, 450. Pierce Co. : Mt. Rainier, Berkeley 

 Park, 6000 ft., 1931, 626. Kittitas Co.: Easton, 2168 ft., 1931, 856. Chelan 

 Co.: Stehekin, 1140 ft., 1931, 1286. Klickitat Co.: Goldendale, 2000 ft., 

 1931, 1690. Whitman Co.: Tekoa Mountains, 2900 ft., 1931, 1590. San 

 Juan Co.: Brown Island, 1906, Fink 132 (W). Clallam Co.: Dungeness, 

 1913, Foster 2547 (W). Whatcom Co.: Ruth Mountain, 5500 ft., 1928, 

 Sunquist 1436 (W). 



A very common species widely distributed, distinguished by the tricho- 



