2 
Trib, Hl, Stereocaulee. 
Podetia solida e filementis adgutinatis formata, gonidia in folio- 
lis graniformibus podetiis adfıxis obvenientia. Apothecia lecideina 
(nigra). 
Stereocaulon Schreb. 
Trib. IV. Cladoniee. 
Podetia fistulosa e filamentis adglutinatis formata, inter quae 
dispersa adsant gonidia. Foliola thalli (ubi non deficiunt) structure 
“ ejusdem ac podetia. Apothecia biatorina (varie colorata). 
 ”"Cladonia Hoff, 
“ Trib. V. Beomycee. 
' Thallus crustaceus proferens podetia e filamentis formata, brevis, 
simplicia, singula apothecio unico biatorino terminata. 
Baeomyces Pers. 
Series HI. Intricate. 
Thallus fraticulosus vel filamentosus, ramosus, teres vel com- 
pressus (absque foliolis ullis vel crusta basali); genidia zonatim in- 
ter radices filamenftoram medullarium sub strato corticali undigue 
disposita. Apothecia lecanorina vel lecideina. 
Trib. VI..Roccellee. 
Tballus cortice corneo tenui, medulla copiosa filamentis implexis 
consistens iodo addito caerulescentibus. Apothecia normaliter lecideine. 
Roccella DC. 
Trib. VII Usnee. 
Thallus ramosissimus teres, medulla externe e filamentis laıe 
implexa, interne e fasciculo centrali erasso filamentorum longitudina- 
liom adglatinatoram contexta. Apothecia lecanorina, margine plerum- 
que ciliata, ciliis textura thalli; sporae päarvae simplices. 
"Uses Hoffm. — Chlorea Nyl. 
Trib. VII, Ramalinee. 
Medulla ihalli teretis vel saepius cempressi laxa, centro inter 
dum cava. Apothecia lecanorina, margine thallino tenui integro- 
"Alectoria Ach. pr. p. — Evernia Ach: — Ramalina Ach. — 
Dufourea Ach. 
Trib. IX. Cetrariee. . 
Thallas rigens plerumgue compressus fruticulosus vel fere folia- 
ceus, intus, filamentoso-stuppeus, superfieie (epithallo) Iaevigatus, 8% 
lito spadiceo-coloratus. Spermatia cylindrica. 
Cetraria Ach. pr. p. 
Series IV. PAylloidee . 
Thallus e fronde consistens dilatata, lobata aut stellato-Iacinial# 
(rarissime frutieuloso-caespitosa), medulla media e ilamentis laxeo iM 
v 
