Dr. E. Stizenberger's Analytical Key to the Lecideas. 125 



rHymenium tinted blue by iodine. L. triseptata, Hepp. 

 Hymenium tinted vinous yellow by iodine j spores 21 mik. long. 

 30. 1^ L. chytrina, Stizb. 



ilymenium tinted violet by iodine; spores 30 mik. long-. L. 

 sahidetorum, v. syncomista, f. fusisjjoni, Hepp. 



oi I Hypothecium black-brown .32. 



I Hypothecium pale or in some part brownish 33. 



CHvmenium violet or blue, above brown. Z. melana, Nyl. (M. & 

 32 J N. 1329; Mudd, 159; Fellm. lo9; Anzi, It. S. 259). 



■ 1 Hymenium pale, above blue-green or brownish. L. sabuletorum, 

 ( V. syncomista, f. vioxtcDta, Nyl. (Schfer. 194 pp.) 



I Epithecium blue-green. L. sabulctoruni, v. syncomista, f, kolo- 

 nuiJa, Nyl. 



oo ) Epithecium and hj'pothecium pale brown. L. sahidetormn, v. 

 obscurnfa, f. artyta, Ach. 

 Epithecium dark brown ; hypothecium pale. L. sabuletorum, v. 

 obscurata, f. epimclas, Stizb. 



iApothecia with margin 35. 

 Apotliecia with evanescent margin 36. 

 Apothecia with persistent margin 41. 



i Hypothecium colourless. L. thysanota, Tuck. 

 Hypothecium dark ; spores 13 mik. long. L. sororiella, Nyl. 

 Hypothecium dark ; spores over 13 mik. long. L. melana, Nyl. 



.op I Apothecia 1 millim. in diameter 37. 



I Apothecia 0-5 millim. in diameter 38. 



{ Hypothecium pale. L. byssomorpha, Nyl. 



I Hypothecium red-brown ; hymenium tinted wine-red by iodine. 

 1 L. trachona, v. coprodes, Korb. 

 37. ;J Hypothecium red-brown; hymenium tinted blue by iodine. L. 

 I microm)iui, Nyl. (Arn. 282). 



I Hypothecium brown-black. L. sabuletorum, v. syncomista, f. me- 

 [^ lancholica, Stizb. 



TApothecia permanent black ; thallus scurfy. L. sabuletorum, v. 

 syncomista, f. yamora, Stizb. 

 38. •< Apothecia permanent black; thallus finely granular. L. sabu- 

 leforutn, v. syncomista, f. Templeto)d, Tayl. 

 Apothecia with colour changeable into black 39. 



"Hymenium with free paraphyses. L. phceomela, Nyl. 

 Hymenium pale violet, -ndth compact paraphyses. L. trachona, 

 39.-^ f. //Y///i;7/,s, Kremp. 



Ilymenium colourless, with brown epithecium and compact 

 paraphyses 40. 



IApothecia 0'2-0'3 millim. in diameter. L. pinyuicida. Bag]. 

 Apothecia 0-5 millim. in diameter. L. trachona, Ach. (Zw. 104, 

 117). 



.-■ j Apothecia 1 millim. in diameter 42. 



■ I Apothecia 0-5 millim. in diameter 44. 



.jj I Apothecia permanently flat. L. artytoides, Nyl. 



I Apothecia ultimately convex 4,3, 



io I Spores 21 mik. long, plain. L. chytrina, Stizb. 

 ' ■ I Spores 17 mik. long, constricted. L. chyt7-ina,\ . hormospora,Stizh, 



