Rainer Alarik Hakulinen

Candelariaceae is a family of lichen-forming fungi in the order Candelariales. It contains seven genera and about 73 species of lichens that are typically characterised by their bright yellow colour. These lichens have diverse growth forms, including crusty, scaly, and small leaf-like structures, and are found worldwide, particularly in arid and mountainous regions of both hemispheres. The family includes well-known genera such as Candelaria, Candelariella, and Placomaronea, with their classification continuing to evolve based on molecular studies. Recent phylogenies find Candelina and

Candelariella vainioana is a species of crustose lichen in the family Candelariaceae. It was described by Finnish lichenologist Rainar Hakulinen in 1954 from collections made by Edvard August Vainio in Hollola in 1874. The specific epithet vainioana honours Vainio. The lichen has been reported from Finland, Sweden, and Norway. The lichen's common name in Swedish is kopparägglav, and kuparikeltuaisjäkälä in Finnish, both of which mean "copper egg-yolk". As of 2019, it is considered to be an endangered species in Finland due to its small population.

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Placomaronea lambii is a species of saxicolous (rock-dwelling) lichen in the family Candelariaceae. It occurs at high altitudes in Argentina, Ecuador, and Peru, where it grows on acidic rocks in open habitats.