Abstract

Enterographa confusa is described as new to science from Cuba. It is characterized by a lichenicolous habit, punctiform ascomata immersed in the host thallus, (6–)8-spored asci and 3-septate ascospores of 17–23 × (2.5–)3 µm with a distinct gelatinous sheath of 1.5(–2) µm. The new species was discovered by chance in the thallus of type material of Arthonia ochraceella, which is lectotypified here. A detailed description of this latter is also provided. Enterographa confusa can be easily overlooked because of its tiny pale ascomata similar in colour to those of its host lichen. A key to all lichenicolous Enterographa species is presented.

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