30 LICHENS OF THE STATE OF WASHINGTON 



1. Leptogium lichenoides (L.) Zahlbr., Cat. Lich. Univ. 3: 136. 1924, 

 Tremella lichenoides Linn. Sp. PI. 1157. 1753. Leptogium lacerum 

 (Swartz) S. Gray. 



Thallus neutral gray (R), reddish brown, or brown, small to medium 

 sized, surface wrinkled and pitted, lobes laciniate, margins ascending 

 denticulate or fringed, sometimes sinuate ; below slightly lighter. Apothecia 

 rare, scattered, 0.2-0.6 mm. in diameter, circular, subsessile ; disk when dry 

 concolorous with the thallus, when moist dull reddish brown, flat to con- 

 cave ; thalline margin concolorous with the thallus ; hypothecium hyaline to 

 cloudy; spores hyaline; ovoid-ellipsoid, muriform, multi-septa, 28.4-52.8 x 

 16.5-19.8 fx. 



On mosses or on a thin layer of soil over rock : Chelan Co. : Rainbow 

 Trail near Stehekin, 3500 ft., 1931, 1260a. Yakima Co.: Naches Ranger 

 Station, 2400 ft., 1940, 3326. Klickitat Co.: Goldendale, 2000 ft., 1931, 

 1687a. San Juan Co.: Waldron Island, 1906, Fink (F). Clallam Co.: Pt. 

 Angeles 1914, Foster (F). Oregon Boundary Commission, 1858, Dr. 

 Lyall (T). 



2. Leptogium lichenoides var. pulvinafum (Hoffm.) Zahlbr. Cat. Lich. 

 Univ. 3 : 142. 1924. Collema pulvinatum Hoffm. Deutschl. Fl. 104. 1796. 

 Leptogium lacerum var. pulvinatum (Hoffm.) Mont. 



Thallus brown, very small, lobes erect, crowded, margins denticulate 

 and fringed much like the species, in cushion-like masses, usually sterile. 



On mosses or on a thin layer of soil over rocks : San Juan Co. : Brown 

 Island, 1940, 3199. Chelan Co.: Merritt, 3500 ft., 193l", 1075. Whitman 

 Co. : Steptoe Butte, 3700 ft., 1940, 2743. 



The variety is distinguished from the species by the cushion-like habit. 



3. Leptogium palmatum (Huds.) Mont, in Webb & Berth. Hist. Nat. 3: 

 128. 1840. 



Lichen palmatus Huds. Fl. Angelica, 2nd ed., 2. 536. 1778. 



Thallus when dry, neutral gray (R), brown, or fuscous (R), when 

 moist, grape green (R) ; medium to large, thin, surface smooth to faintly 

 reticulate or pitted, lobes deeply divided, lobules long and narrow, resem- 

 bling fingers, tubular at the tips, involute, margins with scattered teeth; 

 below slightly paler, more wrinkled. Apothecia often numerous, scattered, 

 very small, 0.2-0.8 mm. in diameter, circular, sessile; disk fawn colored 

 (R) or reddish brown, concave; thalline margin smooth, elevated; hypo- 

 thecium hyaline to pale yellow; spores hyaline, ovoid-ellipsoid, muriform, 

 multi-septate, 36.3-46.2 x 14.6-16.5 /x. 



On soil: San Juan Co.: San Juan Island, Pt. Caution, 1940, 3270; 

 Brown Island, 1940, 3198. Clallam Co. : Elwha River, 1940, 2879. Kitsap 

 Co. : Hidden Ranch near Bremerton, 213 ft., 1940, 3293. Clallam Co. : near 

 Pt. Angeles, 2000 ft., 1914, Foster 2768 (F). King Co. : Snoqualmie Falls, 

 1906 Frye (F) ; Seattle, Univ. of Wash, campus, 1905, Frye 5 i^W). 



