93 



Fam. II. DIDYMIACEAE. 



Sporangia membrana siniplici vcl duplici, crystalla vol 

 granula, saepe in crustam crassani, fragileni conglomorata et 

 adglutinata, includeute. Capillitiuni floccis, raro tubulis, to- 

 ncrriinis, solidis, violaccis vel hyalinis, aeqvalibus fornKitum. 

 Flocci e basi sporangii vel columella assurgcntos, latera pe- 

 tentes, simplices vel ramis sparsis reticulatim conjuncti, lae- 

 ves vel protuberantiis concoloribus praediti, rarissiuie calca- 

 rei. Columella forma valde varia. 



Vn. CHONDRIODERMA Rostaf. Vers. Syst. Mycet. 

 p. 13. 



Sporangia sessilia vel stipitata, irregulariter aut stella- 

 tim dehiscentia, membrana simplici vel duplici, exteriori gra- 

 uulis calcareis difformibus tecta aut, iisdem accumulatis, 

 crustacea, discreta, interiori, si adcst, tenerrimo calcc desti- 

 tuta, vibrante. Columella praesens. 



VIII. DIDYMIUM (ScHnAD.) Kostaf. Sluzowc. p. l.^O. 

 Sporangia sessilia vel stipitata, irregulariter dehiscen- 



tia, membrana simplici vel duplici, exteriori crystailis cal- 

 careis dispersis vel in crustulam separabilem adglutina- 

 tis tecta. 



IX. LEPIDODERMA (De B. Mss.) Rostaf. Vers. Syst. 

 Mycet. p. 13 



Sporangia sessilia vel stipitata, subinde irregularia (plas- 

 modiocarpa), membrana simplici, sqvamulis numcrosis, ma- 

 jusculis, liberis vel in caveis lenticularibus membranae inchi- 

 sis, pro maxima parte calcem continentibus tecta. Colu- 

 mella vulgo manifesta. 



