119. Lecidea ] tt. LECIDEACEAE 195 



cium hyaline; spores ellipsoid, varying toward fusiform, sometimes 1-septate, 

 12-17 X4-6/A. 



On mosses, trees, and rarely wood, throughout northern United States west- 

 ward to Minnesota. 



6. Lecidea leucophaeoides Nyl., Flora 53:35. 1870. 

 L. lulensis Helb. 



Thallus granulose-areolate, the areoles minute and indistinct, or larger, dis- 

 tinct, and convex, whitish to ashy or dirty gray, continuous or scattered, hypo- 

 thallus black, visible here and there and at the margin; apothecia middle-sized, 

 0.5-0.8 mm. across, adnate, the disk fiat to strongly convex, appearing finely 

 roughened under the lens, pale, soon dusky or dull black, the exciple soon disap- 

 pearing; hypothecium hyaline; spores ovoid to ellipsoid, 9-15 X 5-9 /a. 



On rocks, Maryland. 



7. Lecidea varians Ach., Syn. Meth. Lich. 38. 1814. 



Biatora varians (Ach.) Eschw., Syst. Lich. 26. 1824. L. exigua Chaub. L.atro- 

 rubens E. Fries as det. Merrill from Maine. 



Thallus granulose, greenish gray to yellowish green, or the minute granules 

 passing into a thin but continuous, smooth or rough, often chinky crust, usually 

 bordered and decussated by black lines; apothecia minute, 0.12-0.25 mm. across, 

 adnate, often clustered and confluent, the disk flat to convex, pale yellowish to 

 black, the exciple of same color, thin, finally disappearing; hypothecium hyaline; 

 spores ovoid-ellipsoid, 7-15 X 5-7 /*. 



On trees and old wood, throughout the United States. 



8. Lecidea cinnabarina Fee, Essai Crypt. 108. 1824. 

 Biatora cinnabarina (Fee) E. Fries. 



Thallus widespread, thin, chinky, sometimes sorediate, whitish to greenish gray; 

 apothecia small to middle-sized, 0.2-1 mm. across, adnate, sometimes flexuously 

 lobed, rarely proliferous, the disk flat to convex, scarlet, the exciple lighter col- 

 ored, soon disappearing; hypothecium hyaline; spores oblong, 8-12 X 2-3 /t. 



On trees, Washington, Oregon, and California. 



9. Lecidea Nylanderi (Anzi) T. Fries, Lich. Scand. 2:462. 1874. 

 Biatora Nylanderi Anzi, Cat. Lich. Sandr. 75. 1860. 



Thallus thin, widespread, granulose, the granules very minute, often forming 

 scattered clusters, greenish ashy to whitish; apothecia middle-sized, 0.4-1 mm. 

 across, adnate, the disk flat to convex, reddish brown and darkening, the exciple 

 pale, becoming flexuous, soon disappearing; hypothecium hyaline; spores globose, 

 4.5-7 (a across. 



On trees, Massachusetts. 



10. Lecidea carneoalbens Nyl., Lich. Ins. Guin. 46. 1889. 



Thallus thin, somewhat scurfy, continuous, greenish gray; apothecia minute 

 to small, 0.2-0.5 mm. across, adnate, the disk concave to convex, flesh-colored, 

 varying toward yellow or white, the exciple lighter colored, slightly raised or 

 sometimes disappearing; hypothecium hyaline; spores oblong-ellipsoid, 11-14 X 6 fi. 



On oaks, Florida. 



11. Lecidea glebulosa (E. Fries) Clemente, Colm. Enum. Crypt. Esp. Port. 138. 



1868. 



Biatora glebulosa E. Fries, Lich. Eur. 252. 1831. 



Thallus squamulose, greenish to whitish, the squamules thickish, closely at- 

 tached to substratum, becoming crowded and imbricated, lobulate and crenate, 

 convex, irregular; apothecia middle-sized, 0.5-1.5 mm. across, adnate, often con- 

 fluent, the disk flat to convex, slightly pruinose, pale or reddish to brownish or 

 black, the exciple thin, paler, sometimes finally disappearing; hypothecium hyaline; 

 spores ovoid-ellipsoid, 10-12 X 5-6//.. 



On soil, Washington, Oregon, and California. 



