THE LICHEN FLORA OF THE SANTA CRUZ PENINSULA 171 



/. Apothecia small, very numerous, not pruinose. 



g. Apothecia black 8. coilocarpa 



gg. Apothecia bright chestnut. 



12. subfusca campestris 

 ff. Apothecia medium to large; pruinose. 

 h. Thallus determinate, often zonate, areolate; apothecia 

 bluish gray or whitish pruinose. 



9. sordida 

 hh. Thallus effuse, warty or coarsely granular ; apothecia 



ashy pruinose 10. atrynea cenisia 



cc. On bark or dead wood. 



i. Thallus not affected by or only darkened by KOH. 



j. Apothecia very small, the margin white \ 4. hageni 



jj. Apothecia biatorine, margin soon excluded, disk swollen, 



dark brown and blackening 17. varia sapincola 



ii. Thallus colored by KOH. 



k. Thallus orange or orange-red with CaCl 2 O 2 . 



1 8. symmicta 



kk. Thallus not affected by CaCl 2 O 2 . 

 /. Thallus yellow, then red or orange with KOH. 

 m. Thallus thin, smooth, whitish or 



very pale buff-gray 5. albella 



mm. Thallus thick, rough or warty; dull ashy 



gray to dusky 6. albella cancriformis 



II. Thallus only yellow or yellowish with KOH. 



n. Apothecia greenish pruinose; paraphyses agglutinate. .13. pacifica 

 nn. Apothecia not pruinose ; paraphyses more or less distinct. 



o. Apothecia reddish brown n. subfusca 



oo. Apothecia small, pale yellowish or whitish 16. varia 



CC. Apothecia permanently innate. 



IV. Sect. Aspicilia (Mass.) Th. Fr.- Thallus uniform 

 crustaceous; apothecia permanently innate, disk con- 

 cave to plane. 

 p. Thallus yellow, then brick-red with KOH. 



q. Medulla blue with 1 19. alpina 



qq. Medulla not blue with 1 20. cinerea 



pp. Thallus not affected by KOH. 



r. Surface of areoles smooth; apothecia not pruinose 



21. gibbosa 

 rr. Surface of areoles rough crumbly; apothecia whitish 



pruinose 22. calcarea 



SECTION CLADODIUM Tuck. 

 Thallus fruticulose to decumbent and warty, without cortex. 



i. LECANORA BOLANDERI Tuck. 



Lecanora bolanderi Tuck. Proc. Am. Acad. Arts & Sci. 6 : 266. 1864. 

 Lecanora bolanderi Tuck. Syn. N. Am. Lich. I: 181. 1882. 



Proc. Wash. Acad. Sci., May, 1910. 



