Pl.cell. aph. 4. CENOTHALAMEiE. 91.Stereoc. 411 
A. B^eomycide^e. Apothecia nearly round, not bor- 
dered, placed upon a solid podetium. 
I. 91. STEREOCAULOM. Schreber. Stereocaulon . 
Thallus cartilaginous, rather woody? branched, shrub- 
like, bark unequal; apothecia topshape, sessile, solid, flat 
at top, bordered, becomes hemispherically convex ; proli - 
gerous flake thick, covering the apothecium at top, flat, 
girt nearly equally with a border formed of the thallus, 
then dilated, convex, covering the border, turning over, 
coloured ; inside similar, slightly streaked. 
1 . Siereocaulon paschale. Easter stereocaulon . 
Thallus greyish green, branched, granulated, fibrilled ; 
branches crowded, much divided, short; apothecia scattered, 
terminal, becoming convex, conglomerated, blackish 
7 O 7 o 7 
brown. 
Lichenoides non tubulosum cinereum rarnosnm totum crustaceum, Rail 
Syn. 66, 1 1 . 
Lichen paschalis, Lin. S. F. 1621 ; Engl Rot. 282. 
Baeomyces paschalis, Wahlenb . Lapp. 450. 
Corallinoides paschale, Hoffrn. Lich. 25. 
Stereocaulon paschale, Acliar. Meth. 315 ; Lich. 581. 
On dry hills and rocks on mica or lava. 
2. Stereocaulon nanum. Dwarf stereocaulon. 
Thallus white, greyish, very slender, thread, branched ; 
branches nearly even-topped, floeky, powdery ; apothecia la- 
teral, crowded, convex, black brown. 
Lichen qnisquiliaris. Leers FI. Herborn. 993. 
Lichen nanus, Achar. Prod. 206. 
Stereocaulon quisquilare, Hoffm.Germ. 150. 
Stereocaulon nanum, Achar. Meth. 515 ; Lichen. 582. 
On the ground, in rocky countries. 
Tufts a quarter of an inch high. 
II. 92. ISIDIUM. Acharius. Isis-lichen. 
Thallus crustlike, flat, expanded, adnate, uniform ; po- 
detia solid, fertile, rather short; apothecia round, convex, 
growing nearly globular, solid, sessile on the top of the 
podetia; proligerous flake included in the tip of the podetia, 
girt with a border formed of them, convex above, flat be- 
neath, coloured, afterwards prominent, bordered, hemi- 
spherical ; inside similar. 
