Pertusaria hymenea Pertusariaceae
Pertusaria hymenea

Growth type crustose
Chemistry: Cortex: K-, C+ yellow, KC+ orange, UV+ orange. Medulla: K-

Usually on shaded, smooth or rough-barked trees. Rare on shaded rocks

Very variable. Thick grey to grey-green thallus with slightly zoned margin, warts with 1(-4) apothecia with thick, crenulate margins, the discs +/- open. Asci are 8-spored, thick walled simple spores 60-110 x 30-50 Ám.
Microscope photographs below.
Associated lichenicolous fungi include Laeviomyces pertusariicola and Dactylospora parasitica

Similar: P. pertusa. Discs less open, 2-7 apothecia in each wart


Pertusaria hymenea

Pertusaria hymenea

Pertusaria hymenea

Microscope photographs
Pertusaria hymenea

Pertusaria hymenea
Pertusaria hymenea
Holton Lee, Upton Park and Kingston Lacy, Dorset. December 2012, January 2013, November 2016

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