THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA 1 25 



2. ACAROSPORA BELLA (Nyl.) Herre. 



Lecanora bella Nylander, Ann. Sci. Natur. 4: 3, 156. (1858 ?). 

 Lecanora chrysops Tuck. Amer. Journ. Arts. & Sci. 2: 425. 



Lecanora xanthophana Nyl. Ann. Sci. Natur. 4: 15, 379, 



Lecanora xanthophana Tuck. Syn. N. Am. Lich. I: 201. 1882. 



Thallus of small or medium sized flat or turgid scales, more or 

 less crenate-lobate, either imbricate and crowded into a thickish 

 crust, or more or less scattered, discrete and rimose-areolate, the 

 outer squamules lobulate; color a clear lemon-yellow or greenish 

 yellow, rarely dusky yellow; KOH ; CaCl 2 2 . 



Apothecia usually but one in an areole, small, or more rarely 

 medium to large, concave, becoming plane, the disk then often 

 uneven from ridges and lumps made by processes coming from the 

 margin and meeting at the centre; seldom convex; reddish and 

 brown to very dark red in color; margin entire, finally wavy and 

 irregular; epithecium pale yellow; paraphyses distinct,free;thecium 



i r _ 2.5 

 pale greenish-bluish with I; spores _ 6 ft- 



Abundant and somewhat variable; on rocks in the foothills and 

 along the seashore; sometimes forming very extensive and con- 

 spicuous patches on dry, perpendicular rocks, usually in such cases 

 associated with the equally conspicuous and brilliantly contrasting 

 Caloplaca murorum. 



Originally described from Chili and occurring throughout the 

 Andes and over the greater part of the United States. 



3. ACAROSPORA SCHLEICHERI (Ach.) Mass. 



Urceolaria schleicheri Ach. Lich. Univ. 332. 1810. 



Acarospora schleicheri Mass. Ric. sul. Auton. dei Lich. Crost. 27. 



1852. 



Lecanora schleicheri Tuck. Syn. N. Am. Lich. I: 202. 1882. 

 Lecanora schleicheri Farlow, Journey to California, Point Loma. 



1885. 



Thallus tartareous, of difform, thickish areoles, from flat soon con- 

 vex, sometimes somewhat crenate or lobate; more or less thinly scat- 

 tered or crowded into an irregular crust; color pale sulfur-yellow or 

 yellowish-whitish, changing to bright or lemon-yellow when mois- 

 tened. 



