<i>Wettsteinina</i>

Twenty-three species accepted in Wettsteinina Höhnel are described and illustrated. Thirteen of these are new: W. arctica, W. barrae, W. bupleuri, W. Candida, W. douglasii, W. duplex, W. junci, W. kashmirensis, W. kobresiae, W. luzulae, W. magnifica, W. oreophila, and W. savilei. Details are given on 11 excluded species: Didymella anomala (Ell. &amp; Ev.) n.comb. (= Wettsteinina anomala (Ell. &amp; Ev.) Barr), Dothiora ellisii (Barr) n.comb. (= Wettsteinina ellisii Barr), Gnomonia sabalicola Earle (= Wettsteinina sabalicola (Earle) Barr), Kriegeriella mediterranea (E. Müller) von Arx &amp; Müller (= Wettsteinina mediterranea E. Müller), Lophiostoma herbarum (Wehmeyer) n.comb. (= Eriosphaeria herbarum Wehmeyer), Lophiostoma sieversiae Peck (= Wettsteinina sieversiae (Peck) Barr = Wettsteinina andromedae (Auersw.) Barr. var. cassiopes (Dearn. &amp; House ex Barr) Barr = Phaeospora cassiopes Dearness &amp; House, ex Barr), Lophiostoma species 1, Lophiostoma species 2 (= Wettsteinina niesslii E. Müller), Pleospora cytisi Fuckel (= Wettsteinina ambigua Petrak), Wettsteinina niesslii E. Müller sensu Barr non Niessl, and Wettsteinina yuccaegena Barr. Some others are excluded but not redescribed. Cultures of W. gigaspora, the type species, indicated that the fungus is homothallic and does not form an anamorph in culture and that the centrum is of the Pleospora type. The families Pseudosphaeriaceae Höhnel and Wettsteininaceae Locquin nom.illeg. are synonymized with Pleosporaceae Nitschke.