Irish lichens

Toninia sedifolia

Family: Ramalinaceae

Species: Thalloidima sedifolium (Toninia sedifolia)

Growth type squamulose.
Photos: On earth among rocks. Barley Cove, Cork, SW Ireland.

Very variable. Squamules +/- rounded or irregularly-lobed, olive-green to brownish with dense white or bluish pruina. Large black flat or angular discs, pruinose when young, margins becoming excluded. The epithecium is greyish, K+ violet. The asci are 8-spored, spores 1-septate, 14-25 x 2.5-5 Ám. Microscope photograph below.

Occurs on calcareous soil and dunes, on short calcareous turf and in crevices in calcareous rocks.

Similar: Toninia aromatica. Epithecium green, spores 3-septate.


Toninia sedifolia

Toninia sedifolia

Microscope photograph
Toninia sedifolia, microscope photo

Toninia sedifolia, microscope photo
Toninia sedifolia. Barley Cove, Co. Cork. June 2009

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