Surface ornamentation of peristome teeth is examined by SEM for 22 species of l2 genera and four families of the Hookeriales. As the results, three peristome types are recognized based on surface ornamentation as the following: “daltoniaceous” in Daltonia and Cyathophorella, “hookeriaceous” in Callicostella, Calyptrochaeta, Cyclodictyon, and Distichophyllum, and “hypnaceous” in Hookeria, Symphyodon, Leucomium, Dendrocyathophorum, Hypopterygium, and Lopidium. Discussion for those peristome types is given, and SEM micrographs of the surface ornamentation are given for each species.