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, of ten 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 scepincola 



ii. Thallus colored by KOH. 



k. Thallus orange or orange-red with CaCljO^. 



18. symmicta 

 kk. Thallus not affected by CaCUOz- 

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

 m. Thallus thin, smooth, whitish or 



very pale bufl-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. 



0. Apothecia reddish brown 11. subfusca 



00. 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, with6ut 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, igio. 



