146. Solenopsora] 38. LECANORACEAE 313 



11. Lecania fructigena Zahlbr., Bryologist 17:61. 1914. 



Thallus thin, composed of small, dark gray to blackish, more or less scattered 

 warts, sometimes flattening into crenate to lobate squamules; apothecia small, 

 0.4-0. 75 mm. across, sessile to slightly elevated, sometimes clustered, the disk flat 

 to slightly convex, brownish black to black, the exciple thin, colored like the thallus, 

 and appearing like a proper exciple, rarely disappearing; spores 8, oblong to 

 oblong-ellipsoid, sometimes slightly curved, 1-septate, 12-18 X 4.5-5.5 fi. 



On rocks, California. 



12. Lecania toninioides Zahlbr., Beih. Bot. Centralb. 13:160. 1902. 



Thallus thin, composed of small, round to angular, or wavy-lobed, ashy gray, 

 clustered and often subimbricated squamules; apothecia middle-sized, 0.6-1.5 mm. 

 across, adnate to subsessile, the disk flat to slightly convex, black or grayish pru- 

 inose, the exciple thin, colored like the thallus, becoming irregular and disappear- 

 ing; spores ellipsoid, 1-septate, 15-21 X 4-6 fi. 



On rocks and soil, near Santa Monica, California. 



OTHER SPECIES REPORTED 

 Lecania shastensis Herre — California. 



146. Solenopsora Mass., Framm. Lich. 20. 1855. 



Thallus crustose to squamulose, more or less lobed, irregular and rough, the 

 upper cortex very thin or wanting, composed of coherent, septate, thin-walled 

 hyphae, indistinct algal and medullary layers, attached to the substratum by hyphal 

 rhizoids; apothecia small to middle-sized, immersed to adnate or sessile, the disk 

 concave to flat or convex, the exciple colored like the thallus, thin to thick, some- 

 what irregular; hypothecium hyaline; hymenium hyaline; paraphyses unbranched; 

 asci clavate; spores 8, hyaline, oblong to oblong-ellipsoid or fusiform, 1-3-septate, 

 rarely non-septate. 



The algal host is Pleurococcus. 



A. Thallus of yellowish or whitish squamules 



B. Squamules yellowish or yellowish ashy; whitish to blackening below 2. S. crenata 

 B. Squamules whitish 1- S. candicans 



A. Thallus of dark blackish brown squamules 3. S. Hassei 



1. Solenopsora candicans (Dicks.) Stem, Oest. Bot. Zeit. 65:288. 1915. 

 Lichen candicans Dicks., PI. Crypt. Brit. 3:15. pi. 9, f. 5. 1793. Placolecania 



candicans (Dicks.) Zahlbr. 



Thallus thin, composed of small, convex, crenate to lobed, whitish squamules, 

 the squamules toward the margin more distinctly lobed and often radiately ex- 

 tended; apothecia small to middle-sized, 0.4-1 mm. across, adnate to subsessile, 

 the disk flat to convex, brownish black, often more or less pruinose, the thalloid 

 exciple thick, becoming crenate and rarely disappearing; spores 8, hyaline, 1-sep- 

 tate, oblong-ellipsoid, 10-16 X 4-6 /x. 



On rocks, southern California. 



2. Solenopsora crenata (Herre) Zahlbr., Cat. Lich. Univ. 5:755. 1928. 

 Placolecania crenata Herre, Proc. Wash. Acad. Sci. 12:190. 1910. 



Thallus thin, composed of small, convex, somewhat imbricated, crenate-lobed, 

 pale yellowish to yellowish gray squamules; whitish to blackening below; apothecia 

 small to middle-sized, 0.3-0.8 mm. across, closely adnate to sessile, the_ disk flat 

 to slightly convex, brownish to black, often whitish pruinose, the thalloid exciple 

 thick, becoming crenate, rarely disappearing; hypothecium hyaline; spores 8, non- 

 septate to 1-septate and very rarely 3-septate, ellipsoid, sometimes curved, 11-20 

 X 4-5.5 ^ 



On rocks and soil, southern California. 



3. Solenopsora Hassei Zahlbr., Cat. Lich. Univ. 5:755. 1928. 

 Placolecania Hassei Zahlbr.; Hasse, Bryologist 17:61,62. 1914. 



Thallus thick, composed of small, convex, irregularly lobed, often imbricated, 



