108 DR. Е. BORGESEN ON FUCUS SPIRALIS, LINNÉ. 
Fig. 2. 
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Fucus spiralis, L. Part of а plant approaching var. platycarpa, Thur. From 
Thorshavn. 3/4:1, (H. Westergaard, del.) 
I refer, e. g., Fucus Aveschougii as a synonym—has all its branches, even the 
topmost, distinetly dichotomous, and the latter terminating in receptacles, 
