570 
the frond of the first year is usually undivided or only feebly divided at the top, 
but adventitious shoots may be produced at the margins. Broad fronds more or 
Fig. 565. 
Rhodymenia palmata, Lille Belt. A, Fredericia harbour, June. B, Middelfart, July. C, Kongebro, August :/, nat. size. 
less divided were principally found in harbours where they were protected against 
the waves and not strongly illuminated. The ramification of the primary frond, and 
