BioImages: The Virtual Field-Guide (UK)

Cladophora laetevirens (Dillwyn) Kützing, 1843 (a green seaweed)

Date 4 July 2008
OS grid ref TA08
Lat/Lon 54° 20' N, 0° 20' W
Location Vice County: North-east Yorks, VC62, England
Record Summary in shallow rock pool on upper shore
Identification Notes: A small, delicate, pale lettuce green alga growing as vertical tufts in shallow rock pools. Cells filled with a parietal chloroplast mass, to 630µm long, becoming shorter towards branch tips: 54µm tapering to 46µm. Basal cell 620µm, without rhizoids near the holdfast. Branching distal, 1(2) branches, falcate. Some branches composed of short barrel-shaped zoidangia, which become hyaline on release of spores.

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