390 
In fundo præsertim petroso, plerumque intra taeniensi 5-8- 
orgyas demerso, a Freto baltico per totam oram Scandinaviae 
occidentalem saltim usque ad Bergen (Koren), fere ubique sed 
haud frequenter. Aestate tota. 
, 4 
Thallus usque 5-pollicaris, inferne nudus, fuscus, teres, 
seta porcina saepe parum crassior, superne plus minus ramosus; 
rami ramulique plumoso-pinnati, plumis oblongis 2-5 lineas la- 
tis, coloris virescenti-olivacei; pinnæ oppositæ, simplices, di- 
stincte articulatae, articulis diametro paululo longioribus, supre- 
mo cellulam oblongam (sphacellam), in qua massa granulosa, 
constituente. Specimina Hallandica quam Bahusiensia multo 
tenuiora, plumis angustioribus; in ceteris nullam invenio dif- 
ferentiam. 
2. SpuacelaRia scoparia Limi. 
Callo radicali magno lanoso, thallo ”decomposito-pinnato, 
pinnis fastigiatis, pinnulis regulariter alternantibus distichis spi- 
nuliformibus , geniculis obscuris”, perigonidiis ”in axilla aggre- 
gatis racemosis”. J. Ày. Spec, et (jen. Aly. p. 56. 
Conferva scoparia Linn. Spec. eil. 1 vol. 1 p. 1655 
” Forma aestivalis : pinnis superioribus elongatis fascicula- 
tis, pinnulis brevissimis adpressis”. J. sly. I. c. p. 56. 
Sphacelaria scoparia Lynyb. Hydr. Dan . p. 104 t. 51 B. 
” Forma hiemalis : thallo rigidiori supradecomposito-pinna- 
to, pinnulis patentibus”. J. sly. I. c. 
Sphacelaria disticha Lynyb. Hydr. Dan. p. 104 t. 51 sl. 
(sec. Harvey aliosque). 
In mari INorvegico: lahl sec. Lynybye Hydr. Dan. I. c. 
(8. disticha). 
Thallus e callo radicali magno lanoso usque 
caris, qua nota ab omnibus Scandinavicis spcciebus 
gnoscitur. Specimina Scandinavica et plantam vivam 
5-4-polli- 
facile di- 
cis m vi- 
