44)2 



u|t|iositi, interduin tamcn altcrni, patcntcs. Cclluhc longitudinc 

 diamctrum 2-pIo, rarius 4-plo cxcedcntcs. Perigonidia in iis, 

 quae legi, spcciminibus mil hi adsunt, a Gel. !. Ay. I. c. ita 

 descripta: "Propagula totius generis maxima, in rainulis supe- 

 rioribus clungatis terminalia, obovoidea, tenuiorc basi in ra- 

 iii ii in longissimc attcnuata, sa>pe obliqua". 



6. KCTOCARPUS L1TTORALIS /./////. 



Thalli fusccsccntis lilis normnliter liberis raniosissimis, ra- 

 mis ramulisquc oppositis alternis(]uc, superioribus saepius vagis, 

 cellulis diamelro longioribus cylindraceis, perigonidiis sphaeri- 

 co-ovatis ad ramulos sessilibus. J. .///. /. c. 



Conferva littoralis /./////. FL Sv. ed. 2 p. 436. (sec. J. Ag.). 

 Ectocarpus littoralis Lyngb. Hi/dr. p. 130 t. 42. 



t hallo laxo, ram is vagis, oppositis nempe alternisque in- 

 terniixtis. 



Ectocarpus littoralis Ag. Spec. 2 p. 40. 



/? brachiatus, I ha Ho laxo, ramis plurimis oppositis. 



Geramium bracluatutn Atj. Syn. p. 67. Spec. 2 p. 42. 



y- compactus, thallo inferne in funiculos intorto, superne so- 

 Into, ramis filorum magis patcntibus subhorizontalibus. 



Ceramium compactum Roth. 



Ectocarpus compactus Ag. Spec. 2 p. 41. 



Riipibus 1. Phyceis adnatus; forma in marl et Freto bal- 

 tico, secundam J. Ag. frequens, in superior! vero sinus Codani 

 pnrtc rarior; ; in scopulis paululum infra superficiem aquae dcmcr- 

 sis,v. c. ad Christineberg et Koster a me lecta; y rupibus ad- 

 nata in inferior! aquae limitc, v. c. prope Warholmen extra 

 Gotboburgum. Aestate tota. 



