1. The conidiophores which caused the publication of the genus Tomentella J.-Olsen apud Bref. bear no relation to the basidiferous states with which they were associated. They belong to Ostracoderma Fr. The names based on these associations are nomina confusa. — 2. Peniophorella P. Karst. is an other instance of a nomen confusum: it was based on Hyphoderma puberum to which species foreign spores were ascribed. These two-celled spores induced the introduction of the genus. Some additional species are referred to Hyphoderma Wallr. emend. (two new combinations). — 3. The name Phanerochaete P. Karst. is re-introduced for an as yet not sharply delimited genus, the possible characters and limits of which are discussed. — 4. It would appear that the correct name for Meruliopsis Bond. apud Parmasto is Caloporus P. Karst. The taxon is considered as yet ill-defined; it had better be included in Merulius Fr. for the time being. Karsten’s type species is identified with Merulius taxicola (Pers.) Duby. — 5. The genus Hericium Pers. per S. F. Gray, as now sometimes conceived, is broken up into three genera, Hericium s. str., Creolophus P. Karst., and Dentipellis Donk, gen. nov. (two new combinations), the latter a resupinate genus. Two of its species are discussed in some detail. — 6. It is concluded that Lowe misinterpreted Trametes squalens P. Karst., which is a pileate rather than a Poria species, conspecific with Polyporus anceps Peck, of a later date.