Gemmabryum J.R.Spence & H.P.Ramsay is considered to be congeneric with two monotypic South American moss genera, Neobryum R.S.Williams and Osculatia De Not., of which the latter has priority. It is the earliest available generic name for one of the largest segregates of the broadly conceived genus Bryum Hedw. which consists of some 44 species disposed in three sections that have a worldwide distribution. Traditionally, they were all placed in Bryum or Brachymenium Schwägr. and the relevant transfers to Osculatia are effected in the present account.
The subfamily Racomitrioideae of the Grimmiaceae is represented in Hungary by seven species belonging to four genera, including Bucklandiella affinis (F. Weber & D. Mohr) Bednarek-Ochyra & Ochyra, B. heterosticha (Hedw.) Bednarek- Ochyra & Ochyra, B. microcarpa (Hedw.) Bednarek-Ochyra & Ochyra, Codriophorus aciculare (Hedw.) P. Beauv., C. aquaticus (Brid.) Brid., Racomitrium lanuginosum (Hedw.) Brid. and Niphotrichum canescens (Hedw.) Bednarek-Ochyra & Ochyra. All species are briefly described and illustrated and their distribution in Hungary is mapped. A key for determination of genera and species is provided. Some ecological, bryogeographical and conservation questions related to particular species are discussed. The following new statuses and combinations are proposed: Codriophorus P. Beauv. sect. Hydrophilus (Bednarek-Ochyra) Bednarek- Ochyra & Ochyra, stat. et comb. nov., Codriophorus sect. Depressi (Bednarek-Ochyra) Bednarek-Ochyra & Ochyra, stat. et comb. nov., and Codriophorus sect. Andicola (Bednarek-Ochyra) Bednarek-Ochyra & Ochyra, stat. et comb. nov.
A short history of the botanical journal Fragmenta Floristica et Geobotanica is presented. The effective dates of publication of all instalments of this journal are compiled. Publication dates for all parts and supplements of volumes 1−45 which were published in the years 1954−2001 are included.
Dicranodontium schwabei Thér. & Herzog, a poorly known species from Western Patagonia in Chile, is briefly assessed taxonomically. Some morphological and anatomical details of the species are illustrated and the problems associated with the typification of its name are discussed. The conspecificity of this species and Chorisodontium aciphyllum (Hook.f. & Wilson) Broth. is confirmed and the geographical distribution and ecology of the latter species is briefly reviewed.
The generic name Dorcadion Adans. ex Lindb. is a superfluous and illegitimate name for Orthotrichum Hedw. The new generic name Dorcadionella Plášek, Sawicki & Ochyra is proposed for a segregate of Orthotrichum which comprises species with superficial stomata that are always monoicous and only occasionally produce gemmae on leaves. Dorcadionella affinis (Schrad. ex Brid.) Plášek, Sawicki & Ochyra is selected as a type of this new generic name. The genus Dorcadionella consists of 63 species and one variety that have a worldwide distribution. Traditionally, they were all placed in Orthotrichum and the relevant transfers to the new genus are effected in the present account.
Ulota coarctata (P. Beauv.) Hammar was recently collected in Poland after more than half a century. This epiphytic moss was found at four localities in the Pojezierze Lubuskie lakeland in the western part of the country. Its diagnostic features are briefly presented, its habitat requirements are considered, the historical and recent findings of the species in Poland are discussed, and its distribution is mapped. It is suggested that the species status should be changed from ‘endangered’ to ‘critically endangered’ on the red list of mosses in Poland.
Orthotrichum pulchellum Brunt. has been collected in Poland recently. So far, only one old record of the species from the nineteenth century is known from this country. The epiphytic moss has been discovered recently on three localities in the north-western part of the country. Diagnostic features and ecology are presented. The historical and recent findings of the species in Poland are briefly discussed and its current distribution is mapped. It is suggested that the species should be placed on the red-list of mosses in Poland in the category “Indeterminate”.
Based on available molecular and morphological evidence, the genus Codriophorus P.Beauv. (Grimmiaceae subfam. Racomitrioideae) proved to be a polyphyletic taxon. It consists of two distinct genera which correspond to two sections of Codriophorus, namely sect. Codriophorus and sect. Fascicularia (Bednarek-Ochyra) Bednarek-Ochyra & Ochyra. The latter section is raised to generic rank as Dilutineuron Bednarek-Ochyra, Sawicki, Ochyra, Szczecińska & Plášek. The new genus consists of the following five species: D. fasciculare (Hedw.) Bednarek-Ochyra, Sawicki, Ochyra, Szczecińska & Plášek, comb. nov., D. brevisetum (Lindb.) Bednarek-Ochyra, Sawicki, Ochyra, Szczecińska & Plášek, comb. nov., D. anomodontoides (Cardot) Bednarek-Ochyra, Sawicki, Ochyra, Szczecińska & Plášek, comb. nov., D. corrugatum (Bednarek-Ochyra) Bednarek-Ochyra, Sawicki, Ochyra, Szczecińska & Plášek, comb. nov. and D. laevigatum (Mitt.) Bednarek-Ochyra, Sawicki, Ochyra, Szczecińska & Plášek, comb. nov.
The traditionally conceived genera Orthotrichum Hedw. and Ulota F.Weber are here reclassified into six genera, Orthotrichum, Dorcadion Lindb., Nyholmiella Holmen & E.Warncke, Pulvigera Plášek, Sawicki & Ochyra, Plenogemma Plášek, Sawicki & Ochyra, and Ulota, based on morphological differences and partially on molecular evidence. The genus Pulvigera includes P. lyellii (Hook. & Taylor) Plášek, Sawicki & Ochyra (Orthotrichum lyellii Hook. & Taylor) which was selected as its generitype. The genus Plenogemma includes P. phyllantha (Brid.) Plášek, Sawicki & Ochyra (Ulota phyllantha Brid.) which was selected as its generitype.