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Order: Lecanorales Family: Hymeneliaceae
Species:
Ionaspis lacustris
Growth type crustose.
Photos: On acidic rocks. Ballingeary area, Cork, SW Ireland.
Smooth, slightly cracked cream to orange thallus. Apothecia are frequent, to 0.4mm in diameter. Discs +/- convex, translucent-pink when wet, deep orange when dry, concave becoming flat. Asci 8-spored, spores simple, 13-20 x 6-11 µm.
Microscope photo
below.
Chemical reactions negative.
Occurs on inundated upland siliceous rocks, also on upland bridges and rocks in seepage tracks. Most frequent in western Ireland.
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