. Botanisk tidsskrift. Plants; Plants -- Denmark. 165 Punctariacese and place it near Litosiphon. The slight resemblance between this species and Pylaiella littoralis does not show anything more than a relation between the two families. E. Icel. KolfreyjustaOin-, Holmanes. NW. Icel. IsafjorOur. SW. Icel. HvammsfjorOiir, Stykkishulmur; Reykjavik (rironlund, CO); Njardvik (G. 0.). S. Icel. Eyrarbakki, Veslmannaeyjar. Stictyosiphon tortilis (Rupr.) Rke. Atlas Tab. 31—32, Rosenv. Grl. Havalg. p. 8G8. i^hloeospora tortilis Stromf. Algveg. p. 51 ; Phloeospora subarticulata Kjellman Bidrag p. 78. In

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. Botanisk tidsskrift. Plants; Plants -- Denmark. 165 Punctariacese and place it near Litosiphon. The slight resemblance between this species and Pylaiella littoralis does not show anything more than a relation between the two families. E. Icel. KolfreyjustaOin-, Holmanes. NW. Icel. IsafjorOur. SW. Icel. HvammsfjorOiir, Stykkishulmur; Reykjavik (rironlund, CO); Njardvik (G. 0.). S. Icel. Eyrarbakki, Veslmannaeyjar. Stictyosiphon tortilis (Rupr.) Rke. Atlas Tab. 31—32, Rosenv. Grl. Havalg. p. 8G8. i^hloeospora tortilis Stromf. Algveg. p. 51 ; Phloeospora subarticulata Kjellman Bidrag p. 78. In pools and rocks in the lower litoral region and on stones and other algffi in the upper sublitoral region down to a depth of c. 5 fathoms. The largest specimens are 30 cm. long. Fructiferous specimens have been met with in June—August. E. Icel. BerufjorOur, Vattarnes, Holmanes. N. Icel. Grmisey (0. D.); EyjafjorOur: SkagafjorOur (Stromfelt). NW. Icel. Broddanes; DyrafjorOur (G. 0.). SW. Icel. Melar, Reykjavik. I'hieostroina |Mi$tulo$uin Kuckuck Ueber einige neue Phaeosporeen dei- westl. Ostsee, Bot. Zeit. 1895, p. 182, Taf. Vlh Rosenv. Deux. Mem. p. 68, fig. 15. I have met with this species in the litoral region on Scytosiphon lo- mentarius, Ghorda tomentosa, Phylhtis fascia and Laminaria saccharina f. phyl- htis. I have also found it in the sub- litoral region on young Laminaria sac- charina in a depth of 3 — 4 fathoms. The plants I have referred to this species are varying, especially regarding the condition of the basal portion of the frond. Specimens growing on looser substratum, as the surface of fructiferous Scytosiphon and Ghorda, have a basal portion consisting of free filaments, whereas specimens growing on hrmer substratum, as the surface of Laminaria, have a basal disc with mar- ginal growth.. Fig. ^20. Phaosfroma pustulosnm Kuck. a a vertical filament with a youni-' terininiil plurilocular spoiaiiiriuiii, connected with a liorizontal filament (to right) Iteari