373 



Oitno VI. RHODYHENIM. 



Rhodymenieae J. Ay. mscr. Spluerococcoidearnm et Delesseriearum 

 Genera J. Ay. Alg. med. et Auct. Sphaerococceae, Delesserieoe et 

 Plocamieae (quoad paries) Kutz. 



Frondes inarticnlatae, membranaceae, cellulose, cellulis rotundato- 

 angulatis, interioribus sacpe elon^alis. Cystocarpia pericarpio 

 proprio externo munita, nucloum ant nncleolos plures snbcon- 

 lluentes, transformatlone Olorum a placenta radiantinm foriua- 

 tos, continentia; fila gemmidiifera paniculato-ramosa articnlala, 

 intra articulos supremos gemmidia numerosa oblonga, iterata 

 divisione endochromatis orta, dcmnin nullo ordinc conglobata^ 

 mu co solidescente conjuncta, foventia. Sph&rosporce fronde 

 (ant NematheciisJ ant sporopliyllis propriis, nnllo fere ordinu, 

 immersee. 



Frondes omnium membranaceae, forma ct ramificatione varia?, 

 soopins dicliotomie (Stenogramma, Rhodymenia etc.), mine ma<jis 

 pinnatim composilaj (I'locamiiun) ant. foliornm ad instar, a caulo 

 provenientes, costa propria inslructic (Wormskioldia). INJemhrana 

 cellulis rotundato-angulatis, arete inviccm at nullo ordino visibili 

 conjimctis, contexta est; in media parte cellulne mais elongate, 

 pnecipiie in costatis ct caiilescenfibns observandae, stratum proprium 

 internum el'ficiunt. 



Cystocarpia proprio pericarpio, claiiso ant demnm pertuso, 

 munita, in omnibus adsnnl; heinisphaerice supra frondcm clevata 

 in plui'imis, linearia atquo transformatione costic .spmke orta in 

 Stenogramma dicnntur; Wormskioldiae in foliolis propriis prove- 

 nientia. Placenta basalis aut cenlralis inlra pericarpinm pins minus 

 clevata; ab liac fila ramosa plnrima qnoqiiovorsnm irradiantia, mine 

 omnia in nncleimi nnicum conjuncta, mine nncleolos plures, arcle 

 invicom adpressos aut (ilis sterilibns a placenta ad pericarpinm 



