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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