66 



cupped forms, familiar to the most casual observer of lichens, known to 

 children as "Fairy Cups." 



Podetia cup-forming. 



Plants neither sorediate nor granulose. 



Cups regular. 



Cups deep, usually with short marginal proliferations, cortex warty- 



areolate, with flat raised plates, or smooth. 



36. C. pyxidata 



Cups shallow, 2 to 5 ranked, centrally proliferate, diminishing in size 

 above, surfaces smooth, with marginal proliferations into small cups, or 

 bearing apothecia, or with smaller cups scattered over surfaces and mar- 

 ginal apothecia. Cortex smooth, squamulose near base in one form. 



33. C. verticillata 



Cups shallow, 1 to 5 ranked, dentate or proliferate, proliferations arising 

 from the margin or center of the cup and either solitary or radiately ar- 

 ranged, podetia sometimes densely squamulose, apothecia regular or 

 finally lobate and perforate, solitary or clustered at the apices of podetia 

 or proliferations. (PI. 1, f. 6.) 



34. C. degenerans 



Cups shallow, broad or narrow, regular or irregular, in 1 to 4 ranks, 

 proliferate from the margins, cortex smooth, greenish, or brownish in 

 older plants, apothecia marginal, sessile or on stipes. Some forms rela- 

 tively low, 1 to 2 inches high; others, as invar, elongata, among the tallest 

 of Cladoniae, up to five inches in height, with small narrow cups when 

 young, enlarging and becoming irregular as the podetia elongate. KOH — 

 except var. elongata, + yellow. (PI. 2, f. 1.) 



35. C. gracilis 



Cupless, podetia slender, cylindrical, terminating in long, sharp-pointed, 

 olive-tinted tips, sterile. Cortex smooth or slightly areolate. 



42. C. cornuta 

 Plants sorediose, or granulose. 

 Cupless. 



Podetia slender, simple or slightly branched, scatteringly sorediate, usu- 

 ally sterile. 



41. C. cornutoradiata 

 Bearing cups, large or small. 



Cups irregular, shallow, often one-sided, with only one rank of prolifera- 

 tions, usually fertile. 



40. C. nemoxyna 



Poedtia subulate or truncate with small, narrow cups, rarely fruiting, 

 soredia farinaceous, squamules large and with lobate margins, cups soredi- 

 ate inside. KOH + , brownish. 



43. C. coniocraea 



