PARMELIACEAE 79 



x. Asci 1-8-spored 



(x) Paraphyses simple, free 

 m. Spores straight, elliptic to oblong 



(m) Thallus bright yellow; pycnoconidia elliptic 



Candelariella 207 

 (n) Thallus rarely bright yellow; conidia filiform 

 r. Cortex not.pseudoparenchymatic 



Lecanora 201 

 s. Cortex pseudoparenchymatic 



Psoroma 183 

 n. Spores crescent to falcate 



Harpidium 199 

 (y) Paraphyses branched and united 



Ochrolechia 203 

 y. Asci 12-many-spored *Myriolecis 202 



(b) Spores 2-celled 



x. Paraphyses simple, free 



(x) Sterigmata exobasidial Lecania 204 



(y) Sterigmata endobasidial Icmadophila 204 



(inch Placolecania 205) 

 y. Paraphyses branched, united Calenia 205 



(c) Spores 4-many-celled 

 x. Apothecia superficial 



(x) Asci 1-8-spored 

 m. Thallus with cortex Haematomma 205 



n. Thallus without cortex 



(m) Paraphyses forked; spores moniliform, 30-40-celled 



Conotrema 121 

 (n) Paraphyses simple; spores not moniliform, 8-30-celled 



*Adermatis 204 

 (y) Asci 16-32-spored *Dyslecanis 204 



y. Apothecia immersed ; thallus without cortex 

 (x) Paraphyses simple, free Phlyctella 206 



(y) Paraphyses branched and united 



Phlyctidia 206 



(d) Spores muriform 



x. Spores clear, at least not dark 

 (x) Apothecia superficial, broad 



Myxodictyum 206 

 (y) Apothecia immersed, small Phlyctis 206 

 y. Spores dark Diploschistes 122 



(2) Disk small, more or less closed and perithecioid ; apothecia mostly sunk- 

 en in warts Subfamily Pertusariae 195 

 (a) Spores i-celled 

 x. Paraphyses simple, free Perforaria 195 

 y. Paraphyses branched and united 



Pertusaria 195 



