Key to the common species of Dasya

1 Epiphytic on many intertidal and subtidal algae, showing fluffy straw to pink branches along percurrent axes D. corymbifera J. Agardh
1 Attached to hard substrates (saxicolous) subtidally, showing long, silky filaments on deep magenta branches D. iridescens (Schlech) Abbott & Millar

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