According to rule 13.1.d. of the International Code of Botanical Nomenclature, valid publication of fungal names is treated as beginning with Fries's publication of "Systema Mycologicum" in 1821 and following years. This means that the correct species name is coerulea, not caerulea. Both names are found frequently in the literature. Strangely enough, Lamarck's name Byssus has now come to be applied to a plant genus - a fundamentally different organism. In 1763 Michel Adanson had devised the genus name Terana for similar crust fungi and in 1891 Otto Kuntze included coerulea in that genus to create the modern name. Apart from this, the genus Pulcherricium was proposed by Parmasto in 1968 for this one species and the name Pulcherricium caerulea/coerulea is sometimes seen, but the designation Terana is better established. References External links Index Fungorum Fungi described in 1779 Fungi of Asia Fungi of Africa Fungi of New Zealand Fungi of Europe Phanerochaetaceae Taxa named by Jean-Baptiste Lamarck