description Cetrelia olivetorum Overview
Cetrelia olivetorum is a broad-lobed foliose lichen that grows mainly on the bark and branches of trees in temperate woodland. Its leafy gray-green thallus distinguishes it from crustose lichens, and the species is associated with humid, oceanic forest conditions, including older stands with stable bark surfaces. It occurs in parts of Europe and Asia and is also known for producing several lichen secondary metabolites.
help Cetrelia olivetorum FAQ
What kind of lichen is Cetrelia olivetorum?
Cetrelia olivetorum is a broad-lobed foliose lichen in the Parmeliaceae family. Its gray-green, leafy thallus grows on bark and branches rather than forming a tightly attached crust.
Where does Cetrelia olivetorum grow?
It is mainly an epiphyte of humid temperate woodland, especially on the bark of deciduous trees. Records associate it with older forests, stream valleys, ravines, and other moist habitats.
Why is Cetrelia olivetorum associated with old forests?
The species often needs stable, humid conditions and suitable bark that persists on mature trees. In parts of Europe, it has been recorded on trees such as oak, beech, ash, alder, and maple.
Why do sources disagree about the identification of Cetrelia olivetorum?
Cetrelia olivetorum has been treated as part of a species complex containing closely related taxa such as C. cetrarioides, C. chicitae, and C. monachorum. Chemical analysis and close microscopic work may be needed to separate those species reliably.
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