[2] Parmasto's original concept included species that are today classified in the Agaricales, Hymenochaetales, Polyporales, and Russulales.

"[3] In a subsequent 2016 publication coauthored with Leif Ryvarden, Miettinen circumscribed several new genera—Antella, Austeria, Butyrea, Citripora, and Trulla.

Although it is not known with certainty what the closest relatives of the Steccherinaceae are, the genera Climacocystis, Hypochnicium, Meripilus, Podoscypha, and Pouzaroporia consistently appear close regardless of the gene used for phylogenetic analysis.

Most of the species considered have a dimitic hyphal structure (containing both generative and skeletal hyphae), and most have clamps at the primary septa.

[3] Several genera are speculated to belong to the Steccherinaceae, although they have not yet been sampled: Amaurohydnum, Columnodontia, Cystidiodendron, Irpicochaete, Melzerodontia, Mycoleptodonoides, and Odontiochaete.