KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 199 
f. turgida nob. 
f. vesiculifera; segmentis summis tantum alatis, linearibus angustis, vix ultra 5 mm. latis; systematibus 
segmentorum fertilium quam steriles parum brevioribus; receptaculis globosis vel cllipsoideo-globosis, 1 em 
erassitudine superantibus, valde turgidis. 
f. spherocarpa J. G. AG. 
Groénl. Lam. och Fue. p. 29. 
Descr. Fucus vesiculosus f. spherocarpus Kieren, |. ¢. 
Hybr. F. serratus + vesiculosus. 
Deser. et Fig. Kurrn, Nordl. Alg. p. 24; t. 9. 
Syn. Fucus vesiculosus J. G. Ac. Enum.; Grénl. Lam. och Fue. p. 30; Gronl. Ale. p. 110—111. 
» » Argscu. Fue. et Pyenoph. p. 102. 
» » AsuM. Alg. Hayes. (?) p. 96. 
» » CroaLL, Fl. Disc. p. 457. 
» » Dickie, Alg. Sutherl. 1, p. 140; Alg. Cumherl. p. 236; ex parte (?). 
» » x0OBI, Algenfl. Weiss. Meer. p. 53. 
» » Gunn. Fl. Norv. 1, p. 48. 
» » KurEn, Nordl. Alg. p. 26. 
» » Lynas. Hydr. Dan. p. 3; ex parte. 
» » Post. et Rupr. Ill. Alg. p. Il; ex parte. 
» » We. Fl. Lapp. p. 490; excl. var. 
Remark on the forms of this species. The first two of the forms quoted are well 
known. I have preferred to call by the name of f. angustifrons Gopi that form common 
in the southern part of the Polar Sea whose frond is narrow with ovate, oblong-lanceolate 
receptacles and which KieEn has recorded as f. psewdoceranoides Aresci. KLEEn’s description 
of this form differs considerably from Arrscnoua’s description of subspec. pseudocera- 
noides, and those specimens from Nordlanden which are to be found in Kuirry’s her- 
barium with the name of f. psewdoceranoides do not resemble either the figure cited by 
Arescnoua for this subspecies or the form occurring in Bohuslin with which Arrscnova’s 
description agrees. On this account I am of opinion that the forms to which the above- 
mentioned name has been applied by ArrscnouG and KLEEN are not identical. On the 
other hand, Kixen’s f. pseudoceranoides resembles that form which has been taken by Brre- 
GREN in northern Norway and distributed by J. G. AGarpn under the name of FP’. vesi- 
culosus. This is to be found also in the White Sea according to Goxr, who has pro 
posed for it the name which I have employed above. The form I have called turyida 
and of which I have given the diagnosis is nearly related to the preceding as well as 
to f. sphwrocarpa. It. differs, however, from both by its large, much swollen receptacles, 
and seems to deserve attention, as on certain stretches of the coast of Norwegian [in- 
marken it is an essential constituent of the vegetation of Mucacew. The very pretty 
form from Greenland distributed by J. G. AGarpn under the name of f. sph@rocarpa 
has been found by Kuren at Nordlanden and by Gort in collections brought home 
from the western Murman Sea and the White Sea. On the coast of Finmarken at the 
mouths of streamlets I have met with a form, the more robust specimens of which 
