Irish lichens
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Family: Porinaceae
Species: Porina leptalea Two distinct morphs (or un-named species) are included at present. 'Typical' P. leptalea has a greyish-green thallus with dull orange apothecia and the involucrellum only contains an orange pigment. Spores 3-septate, 14.5-23 × 3.5-5 µm. It is an early colonist on shaded bark. Red perithecia morph (shown) has darker thallus, dark red-black perithecia (ruby-red when wet) and narrower spores, 15-22 x 3-3.5 µm. Involucrellum with outer layer of dark reddish pigment (Sagedia-red) and orange pigment below. Micrographs below. Recorded from veteran Holly and Beech in UK (New Forest) and elsewhere in south-west Ireland and Britain. Sorediate morph has pale brown thallus +/- covered by orange soredia, ruby-red perithecia, longer spores 20-28 x 3-3.5 µm. Recorded from the north of Ireland and south-west England Similar: Thelopsis rubella, pinkish-red perithecia, multispored asci |
