Hymenelia prevostii Hymeneliaceae
Hymenelia prevostii

Growth type crustose
Chemical results negative

Found on hard, damp, often horizontal limestone in natural situations and on church memorials. BLS conservation evaluation: LC NS

Pinkish discs (translucent when wet) immersed in pits in a whitish or creamy-brown thallus. The photobiont is trebouxioid so thallus does not scratch orange when wet. Spores simple, 10-24(-26) 7-17(-19) m. Pycnidia absent. Microscope photograph below.

Similar: H. epulotica. Photobiont Trentepohlia, thallus scratches orange


Hymenelia prevostii


Hymenelia prevostii

Microscope photograph
Hymenelia prevostii
Hymenelia prevostii
Lychett Matravers, Dorset. January 2014

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