Carl Adolph Agardh

The Ramalinaceae are a family of lichen-forming fungi in the order Lecanorales. First proposed by Carl Adolph Agardh in 1821, the family now comprises 71 genera and more than 1200 species. Ramalinaceae lichens exhibit diverse growth forms, including crustose, fruticose, squamulose, leprose, and byssoid thalli, and form symbiotic relationships primarily with green algae of the genus Trebouxia. The family is characterised by pale-coloured thalli, apothecia (fruiting bodies) that are typically pale but may darken with age, and ascospores that vary in shape and septation. Members of the

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Lichina is a genus of lichen-forming fungi in the family Lichinaceae. The genus contains four marine species. These cyanolichens include species such as L. pygmaea or L. confinis, in which the associated cyanobiont has been assigned to the genus Rivularia. Furthermore, evidence of a high specificity of each mycobiont towards particular cyanobiont lineages in both species has been detected.

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Dictyonema is a genus of mainly tropical basidiolichens in the family Hygrophoraceae. Unlike most lichens, which contain fungi related to yeasts and molds, Dictyonema species contain fungi more closely related to mushrooms. The genus includes about 40 recognized species found mainly in tropical regions, ranging from lowland forests to high mountain elevations up to 4,300 meters in the Andes. These lichens come in various forms, from crusty patches to leaf-like structures to thread-like mats, and most grow on soil, rocks, moss, or rotting logs. One species from the Amazon rainforest has

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