Bleached seaweed

Bleached seaweed

Observation - Bleached seaweed - UK and Ireland. Description: Chylocladia verticillata (Lightfoot) Bliding, 1928 In the pot I bought home, were a number of bleac

Chylocladia verticillata (Lightfoot) Bliding, 1928
In the pot I bought home, were a number of bleached, but otherwise fresh, seaweeds. This is a common phenomenon in May here. Strong UV light drains the pigments, specially the red from these shallow-sea plants.
This is very red-brown at times (plenty of my evidence in Other Observations) but "..often bleached yellow or almost white in sunny habitats" is from http://www.seaweed.ie/descriptions/Chylocladia_verticillata.php
This specimen many be very mature and the speckling (mini-spots) is almost cerainlytetrasporangia see micrographs here http://www.algaebase.org/search/species/detail/?species_id=135&sk=0
I managed a little microscopy, I am improving. See picture 7 which leaves no doubt that they are part of the anatomy.therefore probably part of the reproduction process, the at 3 tenths of a mm diameter
See also http://seaweeds.uib.no/?art=733