— DE 
tato formato, aequaliter marginata. Thalamium diseiforme, 
primitus connivens, mox apertum explanatum, epithecio rufo- 
fusco vel fusco-nigro, ceraceum. Hypothecium simplex homo- 
geneum, exceptione fusco-nigrum, contextu medullari impo- 
situm. Asci clavaeformes vel clavaeformi-ventrieosi, octospori, 
paraphysibus discretis immixti. Sporae ovoideo-ellipsoideae, 
biloculares aut exceptione quadriloculares, fuligineo -fuscae, 
sporodermide demum constanter colorata opacae. — Thallus 
centrifugus horizontaliter expansus, per rhizinas matriei affıxus, 
amphibryus, foliaceus, stellato-laeiniatus, laciniis varie divisis 
adpressis vel adscendentibus, undique sed dissimiliter corti- 
catus, gonidiis veris pleuristamis. Structura celluloso- fila- 
mentosa; stratum corticale e cellulis rotundato-angulosis com- 
positum; contextus medullaris filamentosus stuppeus uniformis. 
Spermogonia innata vel thallo supra ea parum prominula, 
conceptaculo tenui saepius fuscescente vel fusco, sterigmatibus 
pluriarticulatis vel arthrosterigmatibus munita., Spermatia 
oblongo-cylindrica aut rarius utroque apice leviter incrassa- 
tula, tenella. — Habitus Parmeliae., 
Sectio I. Endimelaena Trevis. — Hypothecium normale. 
Sporae biloculares. 
j Stirps Dimelaenae pulverulentae, 
1. D. pulverulenta Norm, 
A. adpressa (Parmelia allochroa Auct., P. venusta Ach,, 
angustata Hofim., detersa Nyl., argyphea Ach., gri- 
sea —= Lich. pityreus Ach.). 
B. adscendens (Parmelia farrea var. alpiphora Ach., 
P. pulverul. var. fornicata Körb.). 
. glaucovirescens (= Physcia glauco-virescens Ny).). 
ir Stirps Dimelaenae stellaris, 
Leana (— Parmelia Leana Tuck.). 
. erispa (= Parm. crispa Pers.). 
. dilatata (— Physcia dilatata Nyl.). 
. integrata (= Physeia integrata Nyl.). 
. psathyra (= Physcia psathyra Tuck. in Nyl.). 
. major (= Physcia major Nyl. in Flora). 
. stellaris Norm. 
A. adpressa. 
I. rhizophora. (a. Parmelia stellaris Ach. — #, Lich, 
aipolıus Ehrh. — d. commutata — Parmelia ineisa 
Fr. Lich. suec. exs. non Fr. Syst. orb. et Lich, 
eur. quae est Lecanora pruinosa Chaub.) 
Il. cilifera. (Physcia stellaris v. subobscura Nyl.). 
B. adscendens, 
(Parmelia stellaris v. hispida Schaer., Lichen tenellus Scop.) 
” 
vo mn Om 
SISISISISISTICEEEE N 
