XXII. PERICHAENA Fr. Rostaf. Sluzowc. p. 2;)2. 



Sporangia discreta, regularia vel dillbrniia (plasnuidio- 

 carpa), circumscisso-vel laciniato-dehiscentia. Elocci vel tu- 

 buli capillitii reticulatim juncti, ramis aliis parieti sporangii 

 innatis, aliis liberis, subinde obsolcti, laevcs. 



Fam. XIII. ARCYRIACEAE. 



Sporangia discreta aut in aetlialia coalita, mcmbrana 

 vulgo simplici, saepc in superficie intcriori protuberantiis or- 

 nata, absqve calce. Tubuli cai)illitii raro simpliccs, vub'o 

 ramosi, reticulatim connexi, protubcrantiis spinulas, vcrru- 

 cas, venulas sistentibus. Sporangia, sporae et capillitia con- 

 coloria. 



XXIV. OLIGONEMA Rostaf. Sluzowc. p. 291. 

 Sporangia simplicia, regularia, vel irregularia, irregu- 



lariter rumpentia. Capillitium e tubulis liberis com])ositum. 



XXV. CORNUVIA RosTAF. Vers. Syst. Mycct. p. 15. 

 Sporangia discreta, regularia vel irregularia (plasmo- 



diocarpa), irregulariter vel circumscisso-dehiscentia. Tubuli 

 capillitii reticulatim juncti, sporangio non adnati, apicibus 

 numerosis, liberis. 



XXVI. ARCYRIA (Hilk.) Rostaf. Sluzowc. p. 268. 

 Sporangia regularia, stipitata, circumscissa, superne 



evanescentia, basi persistente calyculari. Capillitium e tu- 

 bulis intortis compactura, elastice expansum, deciduum, re- 

 ceptaculo vel tubo stipitis innatum, 



XXVII. LYCOGALA (Micn.) Rostaf.) Sluzowc. p. 285. 

 Aethalia plus minus rotundata, colore varia, in plas- 



modiocarpa nuda iutricate complexa vel coalita. Sporangia 



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