THE LICHEN-FLORA OF CHICAGO AND VICINITY. 33 



52. 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. para- 

 sitica, Schaer, 



Found near Elgin on old stumps, near Lemont, and else- 

 where. Very closely related to C. squamosa, Hoffm. 

 Vide. Fr. L. E. 



53. C- furcata, (Hudson) Fr. Thallus squamulose but small; 

 podetia fruticulose, elongated, corticate; brownish-green, fer- 

 tile summits corymbose, pervious; apothecia brown. Fr. L. 

 E. 229. Tuck. Syn. 247. 



On calcareous soil near Joliet and elsewhere. 



54. C, rangifefina, (L.) Hoffm., var. sylvatica, L. Horizontal thal- 

 lus wanting; the podetia two to four inches high; cinerascent, 

 erect, branched and imbricate, terminal ones divaricated, 

 corymbose. A more delicate form than the species. Fr. 

 Tuck., etc. 



Occurs on dead wood and sandstones in the Desplaines Valley, 

 but is more common further west. The species is found 

 from the arctic circle to the tropics in one form or another. 

 Known as the " Reindeer moss." 



i5. C. cristatella, Tuck. Thallus squamulose, minute, cut and 

 crenate; podetia fair size, often elongated, cylindrical, corti- 

 cate; smooth or wrinkled, summits fastigiate; apothecia scar- 

 let, or as var. b. Tuck, ochrocarpia, C. floerkiana Tuck 

 Syn. N. E. 55, etc. 



Found occasionally in our territory on old decaying logs and 

 stumps. 



6. C, macilenta, (Ehrh.) Hoffm. Thallus squamulose, minute, 

 crenate, lobate; podetia cylindrical, slender, granulose- 

 pulverulent above; apothecia terminal, confluent, scarlet. Fr. 

 L. E. 240. Tuck. Syn. N. E. 55. 



On earth and logs in woods near Joliet; rare. This and No. 

 85 may be. easily identified by the scarlet fruit. 



