409 
The main branches are often surrounded at their base by long 
rhizoids which, however, only produce a very scanty cortical layer. 
This species appears to come near to the group of forms belonging 
to Ectocarpus siliculosus, more particularly its f. arcta ; but it is as yet 
so little known that for the present I prefer to call it Ectocarpus spec. 
Found hitherto only on Str.: Sundene between Thorsvig and 
Kvalvig (!). 
87. E. dasycarpus Kuck., Beitrage zur Kenntnis einiger Ecto¬ 
carpus-Arten der Kieler Fohrde, p. 21. 
The specimens referred to this species agree altogether well 
with Kuckuck’s description and figure, differing in some minor 
points only. Thus the cells in the main branches, which are about 
40 [i broad, are generally only as long as broad, sometimes even 
shorter, and the plurilocular sporangia are sometimes a little broader 
than recorded by Kuckuck, viz. about 21 p. 
It has been found in the sublittoral zone, growing epiphytic 
on Desmarestia aculeata at a depth of some 5—6 fathoms in a 
sheltered situation. It bore plurilocular sporangia in the middle 
of May. 
Found only on Ost.: Ore (!). 
88. E. fasciculatus (Griff.) Harv. Kjellm., N. I., p.344 (279), 
Handb., p.76; Sauvageau, Sur quelques Algues pheosporees parasites 
(Journal de Botanique 1892, p. 102). 
Besides typical specimens, several others were found which I 
have referred, though doubtfully, to this species, amongst others 
some which 1 have referred to var. refracta (Kiitz.) Ardissone. In 
fig. 70 I have shown some fragments of them. The specimens in 
question were marked by their sharply recurved, almost hook¬ 
shaped lateral branches, which occurred scattered upwards along 
the main filaments, and bore on their upper side short-stalked 
sporangia which agreed altogether well with Sauvageau’s figures, 
1. c.; and, as in Sauvageau’s fig. 34, the lateral branches terminated 
in a sterile part destitute of sporangia-bearing branchlets, and not 
in a hair-like apex such as frequently occurs in typical Ectocarpus 
fasciculatus. The cells in the thicker filaments of this variety were 
about 4 [a, thick, and had elegant, spirally twisted chromatophores 
which were often ramified. 1 
1 An imperfectly known species, Ect. Constancice Hariot, seems to resemble 
it fairly closely (Forschungsreise S. M. S. »Gazelle«, IV. Theil, Botanik, Algen von 
E. Askenasy, p. 17). 
