RA 
55, Jahrgang. 
° 30. Regensburg, 21. Oktober 1872. 
Imhalt. Dr. J. Müller: Liehenum spesies es varietates novae. — Nekro- 
log. — Literatur. — Bekanntmachung. — Einläufe zur Bibliothek und 
zum Herbar. 
Lichenum species et varietates novae, 
auetore Dr. J. Müller. 
1. Physeia stellaris v. aipolia f. megalocarpa Müll. Arg. 
Apotheeia 3'1/,,—6'/, mm. lata, grosse undulato-lobata, fusco-atra, 
nuda. 
Forma pulcherrima. Thallus suborbieularis, 2—4 poll. latus. 
Stratum corticale et medulla K intense flavescunt. Sporae circ. 
20 u.) longae. — E reactione thalli ad Physciam aipoliam Nyl. 
referenda esset, sed duce cl. Th. M. Fries (Lichenogr. Scand. 
l. p. 139) species nonnisi charaetere chemico, et hoc loco insuper 
vacillante (fide Th. Fr. 1. c.) distinetas pro genuinis et legitimis 
habere non possum. Reactiones physiologiei, nec systematiei or- 
dinis sunt. 
Habitat ad truncos Fagi inadscensu montis Recu- 
let prope Genevam. 
2. Placodium eretaceum Müll. Arg. in Flora 1867 p. 434, 
a cl. Arnold in Flora 1871. p. 193 seeundum reactionem thalli 
synonymon declaratum fuit Lecanorae prwiniferae Nyl. Lichens 
du Jardin da Luxembourg in Bull. de la soc. bot. de France 
1866, v. 13 p. 368 in notula, i. e. Zecanorae pruimosae Chaub. in 
Saint-Amans Flore Agenaise p. 495 (1821), sed planta mea nuper- 
rime cum specimine archetypico Chaubardiano in hb. Delessertiano 
servato comparata specifice diversa evadit, differt enim a Lecanora 
pruinosa Chaub., cui caeterum satis similis, thallo crassiore, magis 
1) u = u nm. 
Flora 1872. 30 
