- Opegrapha thelotrematis Coppins
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This species which is well distributed in Ireland grows on the thallus of Thelotrema lepidinum and T. macrosporum. It does not invade T. petractoides. The ascus cells contain eight, three-septate spores, 17µm or less in length.
Key characteristics
- A lichenicolous lichen of Thelotrema lepidinum and T. macrosporum
- Spores eight/ascus, three-septate; outer part of slit-like disc K+ greenish.
Original text submitted by Vince J. Giavarini