Description: This lichen grows exclusively on the thallus of Phaeographis dendritica and can be recognised by the small, singly-scattered or clustered, minute slit-like discs with one-septate spores in the range 10–14 x 5–7µm. M. lentiginosa has no visible thallus of its own. In Ireland, the species is known from Counties Fermanagh and Galway and also south-east.

Key Identification Features:

• Lichenicolous on the thallus of Phaeographis dendritica on smooth-barked trees
• Thallus absent, discs slit-like, separate or grouped; spores one-septate.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Stictographa lentiginosa at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Stictographa lentiginosa at iNaturalist World Species Observations database.