THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA 83 



6. LECIDEA FUMOSA (Hoffm.) Ach. 



Patellaria fumosa Hoffmann, Deutsch. Fl. 2: 190. 1791. 

 Lecidea fumosa Acharius, Meth. Lich. 41. 1803. 

 Lecidea fusco-atra Tuck. Syn. N. Am. Lich. II: 75. 1888. 



Thallus spreading extensively, areolate squamulose, fissured, or 

 the small squamules crowded and uniform, concave, rarely flat or 

 convex, with a distinct, often paler margin, which from entire 

 becomes intricately flexed; from shining brown varying to dark 

 brown and nearly black, with a fringing black hypothallus; KOH ; 

 CaCl 2 2 -. 



Apothecia sessile, not very numerous, scattered or sometimes 

 conglomerate, i to 1.25 mm. wide; disk smooth, flat, black, with 

 a thin, grayish-black, at first entire, finally flexuous or lobate margin; 

 becoming strongly convex and finally irhmarginate; hymenium color- 

 less, blue with I; paraphyses coherent; epithecium bluish black; 

 hypothecium homy, dark brown, about half the thickness of the 



hymenium; asci narrowly clavate; spores ellipsoid, - ~1^' 



On various rocks at all elevations, in the foothills and mountains, 

 from 200 feet to the summit of the range. 



Generally distributed in the mountainous regions of Europe and 

 North America. 



7. LECIDEA INTUMESCENS (Flot.) Nyl. 



Lecidea badia var. intumescens Flotow, Lich. Siles. no. 175, 1829. 



Lecidea intumescens Nyl. Lich. Paris, no. 58, 1854. 



Lecidea insularis Nyl. Bot. Not. 177. 1852. 



Lecidea insularis Tuck. Syn. N. Am. Lich. II : 76. 1888. 



Thallus a tartareous, determinate, warty, plicate or broken crust, 

 of convex, cervine-brown squamules, several grouped to form small 

 islands scattered among other crustaceous lichens, especially Lec- 

 anora sordida and Rhizocarpon geographicum; hypothallus not dis- 

 tinct. 



Apothecia small or minute, innate to sessile; disk black; margin 

 thin, persistent; epithecium brown; paraphyses coherent; hypothe- 

 cium brown; asci clavate; thecium blue with I; spores broadly 



ellipsoid, J 



10 - 13 



