77 



but it is not improbable that it may have a somewhat larger distribution. The 

 plant represented in Flora Danica tab. 2207 fig. 2, which is said to have been found 

 by Lyngbye in Odense Fjord, seems to judge from the figure to belong to this 

 species; the description, however, belongs not to it but to Erythrotrichia carnea. 

 In Lyngbye's herbarium I have, from the locality in question, seen only the last- 

 named species, not Goniotrichum , and it must therefore remain doubtful, if Gonio- 

 trichum elegans really occurs in Odense Fjord. — It has been found growing on 

 various species of Polysiphonia, on Rhodomela, Gloiosiphonia, Zostera and Flustra 

 foliacea in depths of 2 to 15 meters; it has only been observed in summer (June 

 to August). 



Localities. Sk: YK, N.W. of Hirshals, 15 m. — Lf: MH in Thisted Bredning; at several places 

 in Sallingsund; LS, N. of Nykabing. — Kll: Busserev at Frederikshavn ; VT, N. of Lsese. — Km: BL, 

 9,5 m. — Sa: (Odense Fjord, Lyngbye?). 



Asterocytis Gobi. 

 1. Asterocytis ramosa (Thwaites) Gobi. 



C. Gobi in Arbeiten St. Petersb. Naturf. Gesellsch. Bd. X 1877 p. 85; Fr. Schmitz 1894 p. 717; id. 1896 



p. 314; N.Wille, Algolog. Notizen, I-IV. Nyt Mag. f. Naturvid. Bd. 38, 1900 p. 7 Taf. I fig. 8— 14. 

 Hormospora ramosa Thwaites in Harv. Phyc. Brit. pi. 213. 



Goniotrichum ratnosum Hauck, Meeresalg. p. 517, Batters, Mar. Alg. Berw. p. 13; Lakovvitz, Algentl. Dan- 



ziger Bucht 1907 p. 79. 

 Goniotrichum simplex Lakowitz 1. c. p. 80. 



The genus Asterocytis has been established by Gobi in his "Bericht iiber die 

 im Sommer 1877 ausgefiihrte algologische Excursion" published in 1879 in "Arb. 

 St. Petersb. Nat. Ges." Bd. X. As this report has only been published in the Russian 

 language, I give in the note below a translation in German of that part of the re- 

 port which treats of this genus, and which Professor Gobi has kindly communi- 

 cated to me'. Later the genus and the species on which it was founded, A. ramosa 

 (Thwaites) Gobi, has been mentioned by Schmitz (1894) who examined specimens 

 of it from water of very low salinity at Greifswald and found that it had nearly 

 the same mode of reproduction as the genus Goniotrichum, only with this difference 

 that the monospores in the last-named are set free by the sporangial wall becom- 

 ing mucilaginous, while in Asterocytis they escape through an opening in the 



' "Die sogenannte Hormospora ramosa Thwaites (Vid. Harvey, Phyc. Brit. Tab. 213; auch Raben- 

 horst Fl. Eur. Alg. etc. Bd. Ill, p. 49) vvelche bis .jetzt (als Pseudoparasit) nur an den Kiisten Englands 

 im Meerwasser angetroffen wurde, habe ich schon mehrere Male auf meinen friiheren Excursionen im 

 Finnischen Meerbusen (1872 u. 1873) gefunden und zwar auch immer nur auf anderen Meeresalgen auf- 

 sitzend in Form einzelner einfacher oder sehwach verzweigter Fiiden. - Thwaites, welclier zuerst diese 

 Form beschriel), (die im lebenden Zustande bis jetzt nur von Smith beobachtet wurde), sah sie als zur 

 Gattung Hormospora Brebisson gehorend an , mit welcher Gattung jedoch sie nichts Gemeinschaftliches 

 hat sowolil in structureller Hinsicht, als auch in der Fiirbung ihres Zellinhaltes. Meiner Ansicht nach 

 muss diese Alge als eine neue Gattung angesehen werden, fiir die ich provisorish den Namen Asterocytis 

 (strahlende Zellei vorschlage, mit dem einzigen bis jetzt bekannten Reprasentanten Asterocytis ramosa 

 (Thwaites) mihi." (I.e. p. 85 — 86). 



