| Noun | 1. | Lichenes - comprising the lichens which grow symbiotically with algae; sometimes treated as an independent group more or less coordinate with algae and fungi division - (botany) taxonomic unit of plants corresponding to a phylum Lichenales, order Lichenales - category used especially in former classifications for organisms now constituting the division Lichenes lichen - any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc. Lechanorales, order Lechanorales - category used in some classification systems for all lichens that produce apothecia family Lecanoraceae, Lecanoraceae - a fungus family of the division Lichenes family Roccellaceae, Roccellaceae - a fungus family of division Lichenes family Pertusariaceae, Pertusariaceae - a fungus family of division Lichenes family Usneaceae, Usneaceae - fruticose lichens having prostrate or erect or pendulous thalli: genera Usnea, Evernia, Ramalina, Alectoria Cladoniaceae, family Cladoniaceae - a family of lichens family Parmeliaceae, Parmeliaceae - a family of lichens Fungi, fungus kingdom, kingdom Fungi - the taxonomic kingdom including yeast, molds, smuts, mushrooms, and toadstools; distinct from the green plants |