Lecideaceae
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The Lecideaceae are a family of lichen-forming fungi in the order Lecideales. It contains about 30 genera and roughly 250 species. A major distinguishing characteristic of the family is the lecideine
Lecidea fuscoatra Ach 271638
Microscopy of cross section of K/I-stained Lecidea uniformis apothecium, showing a proper exciple (translucent), hymenium with asci and paraphyses (blue), hypothecium (red-brown), and a thin, light-coloured band of subhymenium between them
The dark-colored apothecia of Lecidea auriculata emerge from cracks in the rock. The presence of this lichen hastens rock breakdown (pedogenesis).
Immersaria athroocarpa Jymm
Porpidia
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Porpidia is a genus of crustose lichens in the family Lecideaceae. Porpidia species primarily inhabit siliceous rocks, pebbles, and stonework, with rare occurrences on bark, wood, and compacted soil.
Lecideaceae
…used molecular phylogenetics to show that this group of species, defined by morphology and including the type species (Lecidea fuscoatra) and a few Porpidia, species, formed a monophyletic clade. Molecular phylogenetics analysis shows the order Lecideales as a sister group to the Peltigerales. As is standard…
Porpidia albocaerulescens Flickr pellaea
Porpidia cinereoatra
Porpidia crustulata
Porpidia ochrolemma