— 34 * — 
Muscifrondosi: Sporangium ’operculo clausum; isto vel persi¬ 
stence Tel transYcrsim abeunte. 
Musci hepatici : Sporangium operculo destitutum., longitudina- 
liter in valvas dehiscens et semina emittens. 
a) involucro florum universali instructs 
Mauchantia, Pcrigonium femineum proprium mono- 
phyllum, uniilorura. Calyptra llssa, persistens. Sporangium 
in quatuor valvas dekiscens vel lamellatim secedens. Sporae 
uexae fills tenuissimis, tortis. 
Ploris masculi involucrum universale pelta seasilis vel 
peduncnlata, corrtinens locuKs Ifngida spermatocystidia ovata, 
nuda vel cingulo pellucido vel articulato munita, sessilia vel pe~ 
diceilata. 
Floiis feminei pelta steData vel conica, 
b) involucro universali nullo. 
Perigonium monophyllum vel nullum. 
Calyptra fissa persistens. Sporangium quadrivalve, spoiaTHm. 
fila linearia, torta, 
Spermatocystidia ovata vel globosa, cirtgulo peflucido 
simplici vel articulato vel nullo munita, solitaria vel gregaria, 
sessffiavel peduncnlata, superfidei tnmd snperiori vel inferior! 
adnata, vel substantiae immersa, nuda vel foko perigoniali cincta. 
Perigonia femihea variae figurae, compresso-trnncata 
traasvasa et incurva, vel compresso-cris tata margine dentato, 
