Letharia is a genus of fruticose lichens belonging to the family Parmeliaceae. Molecular phylogenetics studies have revealed that what were once considered just two species actually represent at least several distinct evolutionary lineages, with western North America serving as the centre of diversity for the group. These lichens typically grow on sun-exposed wood and bark of coniferous trees, growing in dry habitats where they receive moisture from dew or fog.
GENUS
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Letharia is a genus of fruticose lichens belonging to the family Parmeliaceae. Molecular phylogenetics studies have revealed that what were once considered just two species actually represent at least several distinct evolutionary lineages, with western North America serving as the centre of diversity for the group. These lichens typically grow on sun-exposed wood and bark of coniferous trees, growing in dry habitats where they receive moisture from dew or fog.
==Taxonomy==
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).