398 



lula in M trier cgrcssum obscrvare non lied ml. Si ullius generis, 

 ccrte Imjiis species (iifticilliinc cburactcribus circumscribuntur. 

 Ingenue I'alenr, me tie specifiea eariim dillcrcntia tain csse in- 

 certuni ut, Ectociirpo Mertcnsii omisso, iitrum forma; sint unius 

 cjusdcinquc specie! paruin incmoralibcs, an vcre distincta: 

 species, clicerc vix autlcam. Meniyhine species plus quain 100 

 europuMS determinavit; cur vcro plures non descripserit, ne- 

 scio, IIMIII formic specicrnm stint innuincra?. Kditis </. -///. 

 "Speciebus et generibus Algariim," tres species, scil. E. sili- 

 culosuHi) E. littornlem atque E. firmum, antca a me in unam 

 conjiinctas, hie dcscribo, ejus auctoritate nisus ncquc propria 

 cxperientia, quarc ab co datis cliaracteribus infra utar. 



a. I'diiii altcrni. 



1. ECTOCAUPUS TOMEIXTOSCS Hllds. 



Tballi fusco-lutcscentis filis tenuissimis in funiculos spon- 

 giosos rainosos densissiine implcxis ramosissiinis, ramis ranni- 

 lisquc altcrnis, cellulis longitudine diainctrum usque 4-plo ex- 

 cedcntibus, perigonidiis cxternis breve podiccllatis subovatis. 



(Conferva tomcntosa Hiuls. Fl. Anql. p. 194 (sec. Lynyl.). 

 Ceramium tomentosum Ay. Si/n. p. 64. 

 Ectocarpus tomentosus Lyngb. Hydr. p. 152 t. 44. A. 

 Alfj. Scand. exs. n. 76. 



Fucis, pricsertim FHCO vesiculoso, 1. rupibus adnatus in li- 

 mitc maris, a Freto baltico per totam oram Scandinavia; occi- 

 dcntalem, saltiui usque ad Gbristiansund Norvegiae, frequenter. 

 Aestate tola. 



Tballus usque S-pollicaris et forsan ultra. Omnium te- 

 nuitate iilorum atquc cellularum longitudine fere optimc di- 

 stincta species , babitu spongioso facile dignosccnda. Perigoni- 

 dia duplicis forniae, scilicet J:uio supra descripta, ct 2:do 



