194 33. LECIDEACEAE [ 119. Lecidea 



H. Thallus granulose; apothecia 0.4-1 mm. across . 96. L. olivacea 



G. On rocks 97. L. Manni 



F. Thallus more or less squamulose 

 G. Hypothallus not distinct 



H. Apothecia not less than 0.5 mm. across 



I. Thallus reddish brown 108. L. protabacina 



I. Thallus brownish gray 109. L. fuscatoatra 



H. Apothecia not more than 0.6 mm. across . 107. L. intumescens 

 G. Hypothallus distinct and black 



H. Thallus reddish brown to blackish . . . 105. L. fuscoatra 

 H. Thallus yellowish to copper or 



chestnut-brown 104. L. atrobrunnea 



E. Spores rarely more than 10 fi in length 

 F. Spores ellipsoid or ovoid-ellipsoid 

 G. Thallus granulose 

 H. On rocks 



I. Hypothecium blackish brown . . . . 99. L. cyrtidia 



I. Hypothecium bluish black 100. L. sylvicola 



H. On old wood 101. L. myriocarpoides 



G. Thallus granulose-squamulose 106. L. fuliginosa 



F. Spores globose, 7-9 fi across 95. L. dolodes 



1. Lecidea punctella (Willey) Zahlbr., Cat. Lich. Univ. 3:815. 1925. 

 Biatora punctella Willey, in Tuck., Syn. N. A. Lich. 2:23. 1888. 



Thallus disappearing; apothecia minute, 0.1-0.2 mm. across, adnate, the disk 

 convex, pale lead-colored to black, the exciple disappearing; hypothecium hyaline; 

 spores ellipsoid, 5-7.5 X 2.5-3 fi. 



On old wood, near New Bedford, Massachusetts. 



2. Lecidea phaeophora Stizenb.; Hasse, Bull. Torr. Club 24:448. 1897. 

 Biatora phaeophora Stizenb.; Hasse, Erythea 4:108. 1896. 



Thallus powdery, ashy white, sometimes disappearing; apothecia minute to 

 middle-sized, 0.2-0.6 mm. across, sessile, sometimes crowded, the disk slightly 

 convex, reddish brown, exciple indistinct, surrounded by a thin, powdery, thalloid 

 one; hypothecium hyaline; asci becoming inflated; oblong-ellipsoid, 8-12 X 4-7 ju,. 



On calcareous rocks, southern California. 



3. Lecidea misella Nyl., Not. Sallsk. Faun. Flor. Fenn. 8:177. 1866. 

 L.anomala var. misella Nyl., Not. Sallsk. Faun. Flor. Fenn. 5:202. 1861. 

 Thallus thin, ashy to greenish gray, minutely granulose, becoming scurfy and 



disappearing; apothecia minute, 0.15-0.25 mm. across, slightly immersed to sessile, 

 scattered, the disk convex, brown to blackish brown; hypothecium hyaline; spores 

 oblong-ellipsoid, 7-9.5 X 3-3.5 /j.. 

 On old wood, southern California. 



4. Lecidea paddensis (Tuck.) Zahlbr., Cat. Lich. Univ. 3:808. 1925. 

 Biatora paddensis Tuck., Syn. N. A. Lich. 2:25. 1888. 



Thallus granulose, granules scattered, tough, finally flattened, greenish gray to 

 white; apothecia middle-sized, 0.5-1 mm. across, sessile, the disk flat to slightly 

 convex, dull yellowish brown to lead-colored to dark red or blackish, the exciple 

 becoming flexuous, finally disappearing; hypothecium hyaline; spores globose or 

 long-ovoid, 6-12 X 4-7 /x. 



On old wood of conifers, Montana and Washington. 



5. Lecidea vernalis (L.) Ach., Meth. Lich. 68. 1803. 



Lichen vernalis L., Syst. Nat. ed. 12. 234. 1768. Biatora vernalis (L.) E. Fries. 



Thallus rather thin, widespread, greenish gray to ashy, the granules very 

 minute, irregular or hemispherical, sometimes compacted into a smoother, less 

 granular, chinky crust; apothecia minute to small, 0.3-0.7 mm. across, often 

 clustered and conglomerate, the disk becoming strongly convex, pale yellowish to 

 reddish brown, and blackening, the exciple of same color, disappearing; hypothe- 



