GEOLOGY OF LA SALLE COUNTY. 



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C. gracilis, L., Nyl., var. verticillata,Fr. Cups pro- 

 liferous from the centre, dilated. On earth. 



C. squamosa, Hoffman. Thallus much divided, 

 podetia much branched, apothecia cymose, fus- 

 cous. On earth and rotten log-s. 



C. delicata, Ehrh., Fr. Thallus reduced, more 

 often of crowded white granules, podetia short, 

 slender, apothecia heaped, fuscous. Nyl. Syn. 

 210. Tuck. Syn. 6. 'C. parasitica, Schaer. 

 Found on old stumps. Very closely related to 

 C. squamosa, Hoffm. 



C. furcata, Huds., Fr. Thallus squamulose, but 

 small, podetia fruticulose, elongated, corticate, 

 brownish green, fertile summits corymbose, 

 pervious, apothecia brown. Fr. L. E. 229. On 

 calcareous soil, Deer Park. 



C. rangiferina, L., Hoffm., var. sylvatica, h. Hori- 

 zontal thallus wanting, the podetia two to four 

 inches high, cinerascent, erect, branched and 

 imbricate, terminal ones divaricated, corymbose. 

 A more delicate form than the species. On 

 sandstones. Starved Rock and elsewhere. 



C. cristatella. Tuck. Thallus squamulose, minute, 

 cut ana crenate, podetia fair size, often elon- 

 gated, cylindrical, corticate, smooth or wrinkled, 

 summits fastigiate, apothecia scarlet. Found 

 occasionally on old decaying logs and stumps, 

 Vermillion timber. 



C. macilenta, Ehrh., Hoffm. Thallus squamulose, 

 minute, crenate, lobate, podetia cylindrical, 

 slender, granulose-pulverulent above, apothecia 

 terminal, confluent, scarlet. Fr. L. E., 247. 

 On earth and logs in woods. 



C. Floerkeana, Fr. Apothecia scarlet. On old 

 logs, Deer Park. 



