Ceramium rubrum
was collected in the North Sea by the group of the
Alfred-Wegner-Institut. All other
seaweeds were cultivated by the collaborating groups of
the EU project SEAPURA . Falkenbergia
rufulanosa is the tetrasporangial phase of the species A.
armata. Because both generations of this species were
investigated separatedly, A. armata and F. rufulanosa
amounted separatedly. From Gracilaria cornea 3
variants were used. The Ulva rigida samples came
from 2 different locations. The fresh samples were
washed with seawater and fresh water to remove salts,
epiphytes, microorganisms and other suspended materials.
The clean algae were frozen and lyophilized. The
dry material was stored at −20 °C. Voucher specimens
are deposited in the Institute of Pharmacy, Department
of Pharmaceutical Biology, Ernst-Moritz-Arndt-University
Greifswald, Germany