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Like Gyalideopsis, species in this genus possess structures called hyphophores but in Jamesiella these are isidia-like. J. scotica occurs on wet mountain slopes and along the edges of rocks and boulders in streams and rivers, sometimes attached to old liverwort or moss cushions. The thallus is like a smear of varnish and the pale brown hyphophores like small pegs, flaps or cones. Even though the hyphophores are microscopically small, they are somehow rather conspicuous under a hand lens. In Ireland, there are records from Counties Kerry, Donegal and Galway.
Original text submitted by Vince J. Giavarini