Few Porphyra strains are generally available, and these strains usually are maintained in the conchocelis phase. Conchocelis filaments grow well albeit slowly in culture, but in vitro cultivation of the blade phase is a challenge.

UTEX: Culture Collection of Algae at the University of Texas at Austin (direct link to strain data)

CCAP: Culture Collection of Algae and Protozoa, England (direct link to strain data)

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