Arthrocatenaceae Piątek, Stryjak-Bogacka & Czachura fam. nov. Etymology. Named after the genus Arthrocatena. Description. Colonies erumpent, spreading, with elevated and folded center, greenish olivaceous, forming concentric rings, margin smooth, entire or undulate. Reverse black. Mycelium composed of branched, septate, pale brown or brown, smooth, straight, flexuose or torulose, thin-walled hyphae. Arthroconidia ellipsoid or broadly ellipsoid, rarely barrel-shaped, brown, smooth, one-septate, intercalary or on side branches, single or in chains. Chlamydospore-like cells spherical, brown, smooth, aseptate, intercalary, in simple or branched chains. Chlamydospores spherical, brown, smooth, muriformly septate, intercalary, single. Type genus. Arthrocatena Egidi & Selbmann.

Published as part of Piątek, Marcin, Stryjak-Bogacka, Monika & Czachura, Paweł, 2024, Arthrocatenales, a new order of extremophilic fungi in the Dothideomycetes, pp. 47-74 in MycoKeys 108 on pages 47-74, DOI: 10.3897/mycokeys.108.128033