2 Ceramie.t;. 



inclusa, in Callithamnio evidentissime vidi. Cum his tamen 

 haud dictum volui partes intra celhilam matricalem nuHo 

 certo ordine oriri; intra ipsam celkilam matricalem quasi 

 prolepsi quadam, partes ordine certo evolvi, credere forsan 

 liceat. In Polycoelia evidentissimum hahemus exemplum telam 

 cellularem compositam intra cellulas singulas oriri, et sporas 

 quaternas intra cellulam matricalem formari omnibus est no- 

 tissimum. 



A superticie visse nuclei partes quasi omnino inordinatse 

 intra memhranam exteriorem hyalinam obveniant; nucleo au- 

 tem fehciter secto aut compresso partes interiores certo quo- 

 dam ordine dispositse, quasi a centrali puncto radiantes, aut 

 lobos plus minus subdivisos,' fere fasciculatim exeuntes, for- 

 mantes adpareant. Utrum fasciculi plures, ubi adsint, cellulis 

 singulis subdivisis oriantur, an cellulis matricalibus phiribus 

 coalescentibus sensim proveniant, dicere non ausim. 



Duos ordines, fronde articulata aut inarticulata facilius 

 distinctos, Gongylospermeis refero. 



Ordo 1. CERAMIEf.. 



J. Ag. Sp. Aly. Vol. II. p. 1. 



Algse articulata3 monosiphonise, nuda? aut strato cellula- 

 rum sensim evoluto corticatse, fibrisve radicahbus decurrenti- 

 bus obtectse, demum quandoquidem celhilosge. Cystocarpia 

 (favellse) externa, nuda ramellisve involucrata, quasi nucleo 

 nudo constituta; nucleus ramo adnatus, quasi ramulo imme- 

 diate transformato ortus, simpliciusculus aut lobatus, lobis 

 plus minus coaUtis constitutus; gemmidia iterata divisione 

 intra cellulam matricalem orta, demum plurima rotundato- 

 angulata nullo ordine conspicuo conglobata aut subradiantia, 

 intra periderma hyahnum gelatinosum cohibita. Spheerosporse 

 varie divisse. 



Quo sensu et ambitu Ceramieas in Speciebus Algarum 

 antea exposui, eodem paucis mutatis hodie ordinem adoptan- 

 dum censeo. Disponantur igitur genera: 



TRIBUS I. f ALLITHAMMEiE. Spha;rosporis transforma- 

 tione ramuli aut articuli integri formatis: 



