416 



Diva compressa Linn. Spec. ed. 1. vol. 2. p. 1165, 



Flor. Svec. p. 433. 



Scytosiphon comprcssus Lyngb. flt/tlr. p. 64 t. 15 A. 

 Solcnia compressa Ay. Syxt. p. 186. 

 So! ciiia ilavesccus Ay. Syst. p. 186. 

 Entcromorpha compressa Grev. Alg. Brit. p. 180. Alg. 



Scand. exs. n. 58. 



In limito aquae superior!, rupibus Phyceisque insidcns, 

 per totnm or;im mcridionalcm Scnndinaviae atquc occidentalcm , 

 Kaltim usque ad Molde. Acstate tota. 



Thallus mine subcapillaris, mine filiformis, imam alteramve 

 liiieaia latus, modo comprcssus, modo subcylindricus, plus mi- 

 nus ramosus, apicibus plerumque obtusis. Ccllula3 quam in 

 sequentc specie rnagis rotuudatse. 



5. EiNTKROMORPnA. CLATHRATA Hdlli. 



Tliallo capillari 1. filiform! ramoso, ramis sparsis crebris 

 ramuiusis, ramulis plus minus patcntibus 1. recurvis, cellulis 

 subquadratis 1. subquadrato-rectangularibus. 



a. t hallo dilutc-viridi capillari flaccido crebrc ramoso, ramis 

 elongatis itcruin ramulosis, ramulis patcntibus 1. divari- 

 catis attcnuatis. 



Conferva clathrata Roth. Cat. 3. p. 175. 

 Ulva clathrata Ay. Disp. - Syn. p. 46. 

 Scytosiphon clathratus Lyngb. Hydr. p. 66. t. 16. A. 

 Solcnia clathrata -///. Syst. p. 186. 



Entcromorpha clathrata Grev. Alg. Brit. p. 181. Alg. 

 Scand. exs. n. 12 (forma demersa clongata). 



b. ramulosa, thai I o subcompresso intorto ramulis crebris bre- 

 vibus undiquc obscsso. 



