The Botany of Iceland - 01.12.1912, Side 27

MARINE ALGAL VEGETATION
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Ralfsia verrucosa (Aresch.) J. Ag., Reinke (59), Atlas T. 5 and 6,
figs. 1—13.
E. Icel., N. Icel., SW. Icel.
Raifsia deusta (Ag.) J. Ag., K. Rosenv., 61, p. 898.
E. Icel., N. Icel., SW. Icel., S. Icel.
Myrionema vulgare Thuret, Sauvageau, 66, p. 185.
N. Icel., SW. Icel.
Myrionema Corunnæ Sauvag., 66, p. 237.
S. Icel.
Myrionema globosum (Rke) Fosl., New or critical Norw. Algæ, p.
17; Ascocyclus globosus Rke, 58, p. 46; Atlas (59) T. 17; Phycocelis
globosus K. Rosenv., 62, p. 86, figs. 19—20.
E. Icel., N. Icel., NW. Icel., SW. Icel.
Myrionema færöense Rörgs., 13, p. 424.
SW. Icel.
Myrionema Laminariæ (K. Rosenv.), Dermatocelis Laminariæ K.
Rosenv., 62, p. 89, fig. 21.
SW. Icel.
Ascocyclus islandicus H.Jónsson, 31, p. 149.
N. Icel.
Probably this species wiil prove to be identical with A. sphœrophorus
Sauv., cf. Jónsson, 31, p. 151 and Kylin.1 The last-named author
writes that A. islandicus without doubt is identical with A. sphœrophorus,
but he gives no particulars as to the chromatophores of the iast-named
species, I therefore must still regard the Icelandic plant as a distinct
species.
Fam. Ectocarpaceæ.
Microsyphar Polysiphoniæ Kuck., Beitriige (48) p. 29.
NW. Icel., SW. Icel.
Streblonema æcidioides K. Rosenv., 61, p. 894; 62, p. 80; Phyco-
celis æcidioides Kuck., Bemerk. I (57), p. 234.
E. Icel., N. Icel., SW. Icel.
Streblonema Stilophoræ Cr. var. cœspitosa K. Rosenv., 61, p. 892.
Found in all parts of the coast.
Pylaiella littoralis (L.) Kjellm.; Ectocarpus littoralis, Kuck., 48,
p. 7; Rosenv., 61, p. 881; Pylaiella littoralis, Pylaiella varia Kjellm.,
35, p. 83.
Common around the coast of Iceland.
1 Harald Kylin, Zur Kenntnis der Algenflora dér Norwegischen Westkúste,
Arkiv för Botanik, Bd. 10, No. 1, 1910.