346 Kryptogamen. — Flechten. 
*) Crusta areolis superne 'tenuissime furfuraceis. 
Ps. subsimilis (Wain.). Crusta fuligineo-nigricans. 
**) Crusta areolis scabriusculis. 
Ps. numidella (Nyl.). Crusta nigra, granulis minutis, sterilibus 
tenuibus, fertilibus turgidulis, contiguis aut dispersis. 
Thecium J. coerulescit, asei deinde sordide lutescunt. 
Ps. pyrenopsoides (Nyl.). Crusta fusco-atra, granuloso-areo- 
lata vel fere continua. Thecium J. coerulescit. 
tr) Paraphyses haud bene distinctae. 
Ps. deplanata (Wain.). Crusta nigricans areolis granuloso-rugosis. 
ß. Epithecium incolor. 
h 9—10 
Ps. obtenebrans (Nyl.).. Apothecia pyrenodea. Sporae Fer 
N N ö 14—17 
[-Ps. deplanata (Wain.). Apothecia lecanorina. Sporae 90 u.] 
B. Sporae 16— 32-nae. 
Ps. suffugiens (Nyl.). Crusta vix visibilis. Thecium superne lutescens. Sporae 
5—6 
Burke 
I 
Ne) 
Ps. Arnoldi Heufl. Sporae 5 #. 
C. Apothecia incognita. 
Ps. Iygoplaca (Nyl.). „Thallus 'niger, tenuis continuus, subopacus, tenuissime 
subcoriaceo-rugulosus, determinatus vel sul. determinatus.“ 
III. Species ob gonidia vix huc pertinentes. 
A. Apothecia carneo-rufo-fusco-nigra. 
a. Thecium vix vel duplo latius, quam altum. Asci cylindrici, saepe „intestini- 
formes“ et inter spcras, vulgo uniserialiter dispositas, constricti. Paraphyses 
capillares, distincte liberae. 
a. Apothecia minutissima, non nisi lente visibilia. 
Ps. byssoides (Hepp.). ‘Crusta minute coralloideo-granulosa. 
Ps. riparia Arn. Crusta verrucoso-granulosa. 
ß. Apothecia majora, oculis nudis visibilia. 
Ps. Arnoldiana (Hepp.). Apothecia disco vulgo dilatato. 
Ps. Flotowiana (Hepp.). Apothecia .diseo punctiformi. 
b. Thecium pluries laties, quam altum. Asei oblongo-clavati sporis sine ordine 
dispositis praediti. Paraphyses cohaerentes, vix distinete liberae. 
a. Apothecia rufa vel carneo-rufa. 
Ps. pelodes Kbr. Apothecia rufa, majora. 
Ps. Rehmii Kbr. Apothecia carneo-rufa, :minora. 
ß. Apothecia fusco-nigra. 
Ps. endoxantha (Anz.) Crusta effusa, granutis minutis distantibus com- 
posita. 
Ps. Schaereri (Mass.) 
Ps. murorum (Mass.) 
Crusta ‚granuloso-verrucosa vel squamulosa, squa- 
mulis subcorallinoideis in crustam diffractam con- 
gestis. 
B. Apothecia nigra. 
a. Crusta crassa, atrofuscescens. 
Ps. Tugubris Mass. 'Thecium semper incolor. 
b. Crusta tenuis, nigra. 
Ps. lignyota (Wahlenb.). ‘Superior pars thecii intense smaragdulum. Sporae 
11—16 
8-9 © 
