126 Dr. E. Stizenberger's Analytical Key to the Lecideee. 



( Apothecia 0-2 millim. broad, brown. L. mesoinela, Nyl, 

 44. J Apothecia 0-3-0'5 millim. broad, brown. L. lemoblephara, Nyl. 



■ ) Apothecia O-o millim. broad, black. L. trachona, f. marginatula, 

 ( Nyl. 



. P j Hymeniimi tinted blue by iodine 46. 



■ I Hymenium tinted violet or vinous-yellow by iodine 57. 



./. ) Spores nearly acicular. L. cupreo-rosella, Nyl. 



i Spores elliptical, kidney-shaped, or fusiform 47. 



.^ \ Apothecia without margin 48. 



' I Apothecia with evanescent or persistent margin 52. 



« n \ Apothecia permanently brown-black or black 49. 



j Apothecia variable in colour 51. 



{Apothecia very small ; paraphyses free-branched. L. Nitsch- 

 keana, Lahm (Kabh. 583 pp. ; Arn. 217). 

 Apothecia large ; paraphyses compact or indistinct 50. 



Apothecia flat; hymenium blue-gi-een above, L. allotropa,'^j\. 

 Apothecia hemispherical ; hymenium blue-green above. L. sa- 



hnJetonvm, v. miliaria, f. trisepta, Naeg. (Hepp, 20, 284, 285 ; 

 50.-<; Zw. 270; Kiirb. 133; Leight. 238; Hepp, 510 (uon Leight. 



210); Arn. 167; Mudd, 157). 

 Apothecia hemispherical; hymenium brown-black above. L. 



sabulctomm, v. obsctirata, f. epimelas, Stizb. 



I Apothecia grey ; hypothecium colourless. L. Naegelii, f. occulta, 

 I Stizb. 

 1-, I Apothecia red-brown ; hj'pothecium colourless. L. Naegelii, v. 



■ \ ohscurinscula, Nyl. 



/ Apothecia red-brown to brown, within flesh-coloured. L. sabu- 

 \ letorum, v. obscurata, f. microcarpa, Th.,Fr. 



f-c) j Apothecia over 0*5 millim. in diameter 53. 



I Apothecia under 0'5 mUlim. in diameter 54. 



53. 



'Spores .30 mik. long; thallus finely granular, thin. L. sabu- 

 letorum, v. obscurata, Sommf. (Anzi, Langob. 166; Hepp, 11 

 pp. ; Zw. 193 pp.). 

 Spores 30 mik. long ; thallus verrucoso-scurfy. L. sabuletontm, 

 V. obscurata, f. Icucorhxjpara, Nyl. 



► , j Spores at most 20 mik. long 55. 



( Spores above 20 mik. long 56. 



^. J Margin persistent. L. trachona, v. Notarisiana, Bagl. 



■ I Margin evanescent. L. trachona, Ach. 



{Spores narrow, 4 mik. broad ; epithecium colourless. L. sabu- 

 letortcm, v. obscurata, f. vcnusta, Hepp. 

 Spores broad, 6 mik. and more ; epithecium yellowish or brown. 

 L. Naegelii, Hepp. 



t-m I Apothecia without margin 58. 



■ I Apothecia with evanescent or persistent margin 62. 



[Apothecia black, small. L. Nitschkeana, Lahm. 

 KQ j Apothecia black, large. L. sabuletomm, v. miliaria, f. simpli- 



■ I cior, Nyl. 



( Apothecia pale 59. 



KQ \ Apothecia flat ; paraphyses none. L. metamorphea, Nyl. 



■ I Apothecia slightly convex; paraphyses compact GO. 



