- Micarea ternaria (Nyl.) Vězda
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Very like Micarea lignaria but with smaller, consistently three-septate spores and habitat of coastal rocks and scattered stones. It should be noted that this is an arctic species; its taxonomy is suspect; a revision of its true identity is overdue. In Ireland, the species is known from Connemara.
Key characteristics
- In appearance very similar to M. lignaria
- Spores no more than three-septate and smaller in length (<22µm) than in that species; coastal rocks.
Original text submitted by Vince J. Giavarini