Bryophytes of Uganda : 1., BBS Tropical Bryology Group expeditions, 1996-1998 ; introduction and collecting sites

The British Bryological Society Tropical Bryology Group (TBG) undertook three expeditions to Uganda, in Jan-Feb 1996, Jan-Feb 1997 and June-Jul 1998. Collections were made from 134 sites, mainly from national parks and forest reserves in western and southern Uganda

Bryophytes of Uganda : 4., new and additional records, 2

20 hepatics and 16 mosses are reported new to Uganda, 1 moss being also new to Africa. A further 6 taxa are recorded for the second time from Uganda

British Bryological Society expedition to Mulanje Mountain, Malawi : 13., new and other unpublished records

Further results are provided of the 1991 British Bryological Society Expedition to Mulanje Mt., Malawi including 168 taxa of bryophyte, comprising 72 taxa of liverwort (38 new to Malawi) and 96 taxa of mosses (45 new to Malawi)

Bryophytes of Uganda : 2., new and interesting records

51 hepatics and 46 mosses are reported new to Uganda, including one moss new to Africa, one hepatic and two mosses new to mainland Africa, and 2 hepatics that are otherwise known only from their type collection

Bryophytes of Uganda : 6., new and additional records, 3.

12 hepatics and 32 mosses are reported new to Uganda, 1 moss being also new to Africa, and 1 liverwort new to mainland Africa. Ectropothecium plumigerum (Broth.) Hedenäs is a new combination (basionym: Isopterygium plumigerum Broth.) with a new synonym Taxicaulis plumirameus Müll.Hal. nom. nud., and Taxiphyllum maniae (Renauld & Paris) M. Fleisch. is a new synonym of Taxiphyllum taxirameum (Mitt.) M.Fleisch. Three mosses are removed from the Uganda list

Observations sur la taxonomie et la distribution de <i>Epipterygium atlanticum</i> Hanusch et <i>E. tozeri</i> (Grev.) Lindb. (Mniaceae Schwägr.) au Portugal continental

Epipterygium atlanticum Hanusch est une espèce récemment décrite principalement présente en Macaronésie, avec une collection en Écosse. Dans ce contexte, nous avons étudié 144 spécimens de E. tozeri s.l. du Portugal continental conservés dans l’herbier LISU, incluant des récoltes récentes, et 70 étaient attribuables à E. atlanticum. La longueur et la largeur des cellules laminales des feuilles latérales s’avèrent être les caractères morphologiques les plus importants pour la délimitation des deux espèces. Epipterygium atlanticum est un taxon largement répandu sur tout le territoire portugais, devenant de plus en plus fréquent dans les zones atlantiques et en Algarve. Nous fournissons une carte sur la distribution des deux espèces ainsi qu’un bref compte-rendu sur leur écologie et leurs préférences en matière d’habitat.Epipterygium atlanticum Hanusch is a recently described species based on plants occurring mainly in Macaronesia, with one collection from Scotland. Against this background, we studied 144 specimens of E. tozeri s.l. in LISU herbarium from mainland Portugal, including recent field collections, and 70 were referable to E. atlanticum. The length and width of mid-leaf laminal cells of lateral leaves were the most important morphological characters for the delimitation of the two European species. Epipterygium atlanticum is a widely distributed taxon throughout the Portuguese territory, becoming more frequent in Atlantic zones and in the Algarve. We provide an updated map of the distribution of both species and a brief account of their ecology and habitat preferences.</p

Observations on the Taxonomy and Distribution of Epipterygium atlanticum Hanusch and E. tozeri (Grev.) Lindb. (Mniaceae Schwägr.) in Mainland Portugal

Epipterygium atlanticum Hanusch is a recently described species based on plants occurring mainly in Macaronesia, with one collection from Scotland. Against this background, we studied 144 specimens of E. tozeri s.l. in LISU herbarium from mainland Portugal, including recent field collections, and 70 were referable to E. atlanticum. The length and width of mid-leaf laminal cells of lateral leaves were the most important morphological characters for the delimitation of the two European species. Epipterygium atlanticum is a widely distributed taxon throughout the Portuguese territory, becoming more frequent in Atlantic zones and in the Algarve. We provide an updated map of the distribution of both species and a brief account of their ecology and habitat preferences.info:eu-repo/semantics/publishedVersio

Herzog Vindicated: Integrative Taxonomy Reveals That <i>Trichostomum brachydontium</i> (Pottiaceae, Bryophyta) Comprises Several Species

The morphologically variable moss Trichostomum brachydontium is very common in south and west Europe, particularly under Mediterranean and Atlantic climates. A morphological study was conducted alongside a molecular phylogenetic study based on nr ITS and cp-rbcL regions in order to assess if T. brachydontium is an exceptionally polymorphic species as evidenced by the number of described infraspecific taxa in the last century or, alternatively, if it includes more than one species, and if so, to find the valid name for them. Phylogenetic analyses of both nuclear and chloroplast datasets show that there are four well-supported clades. While the ITS-based tree is in good agreement with the morphological data, there are a few inconsistencies with reference to the rbcL tree; this may be explained by incomplete lineage sorting by hybridization or by the persistence of isolated ancestral molecular races. The morphological survey revealed well-defined discriminate differences between the four phylogenetic lineages. The taxonomic conclusions include the recognition of four species: T. brachydontium s.s., T. herzogii (a new name proposed for var. cuspidatum), T. littorale, and T. meridionale (a new name proposed for var. densum). Lectotypes are designated for T. brachydontium and T. littorale. Our results underline the ongoing need of integrative studies to examine further the underestimated diversity of the T. brachydontium complex in other regions

Herzog Vindicated: Integrative Taxonomy Reveals That Trichostomum brachydontium (Pottiaceae, Bryophyta) Comprises Several Species

© 2021. This manuscript version is made available under the CC-BY-4.0 license http://creativecommons.org/licenses/by/4.0/ This document is the Published Manuscript version of a Published Work that appeared in final form in Taxonomy. To access the final edited and published work see https://doi.org/10.3390/taxonomy2010005The morphologically variable moss Trichostomum brachydontium is very common in south and west Europe, particularly under Mediterranean and Atlantic climates. A morphological study was conducted alongside a molecular phylogenetic study based on nr ITS and cp-rbcL regions in order to assess if T. brachydontium is an exceptionally polymorphic species as evidenced by the number of described infraspecific taxa in the last century or, alternatively, if it includes more than one species, and if so, to find the valid name for them. Phylogenetic analyses of both nuclear and chloroplast datasets show that there are four well-supported clades. While the ITS-based tree is in good agreement with the morphological data, there are a few inconsistencies with reference to the rbcL tree; this may be explained by incomplete lineage sorting by hybridization or by the persistence of isolated ancestral molecular races. The morphological survey revealed well-defined discriminate differences between the four phylogenetic lineages. The taxonomic conclusions include the recognition of four species: T. brachydontium s.s., T. herzogii (a new name proposed for var. cuspidatum), T. littorale, and T. meridionale (a new name proposed for var. densum). Lectotypes are designated for T. brachydontium and T. littorale. Our results underline the ongoing need of integrative studies to examine further the underestimated diversity of the T. brachydontium complex in other regions

Survey of the bryophytes of arable land in Britain and Ireland 1: a classification of arable field assemblages

Knowledge of the distribution of arable bryophytes lags behind that of bryophytes of many other habitats, and we have almost no information on their occurrence in relation to crop type and agricultural management regime. A survey of arable fields in Britain and Ireland carried out by members of the British Bryological Society in 2001-05 was designed to provide such baseline data. We surveyed a stratified random sample of 200 fields in the main areas of arable agriculture and a further 620 fields in these areas and in areas where arable fields are less frequent. The species present in each field were listed and their frequency within the field assessed. Data on the crop, the cover of vascular plants, bryophytes, trash and bare soil, and the pH and texture of the soil were recorded for each field. Six species assemblages are described on the basis of a classification of the species recorded in each field and their frequency values. The Tortula truncata-Anthoceros and Dicranella staphylina-Riccia glauca assemblages are the most species-rich and are concentrated on acidic soils in northern and western Britain and in Ireland. By contrast, the Barbula unguiculata-Bryum klinggraeffii and Phascum cuspidatum-Microbryum davallianum assemblages are mainly found on calcareous soils in southern and eastern England. The Bryum dichotomum-Marchantia polymorpha assemblage is characterised by widespread, weedy generalist species and is concentrated in East Anglia. The final assemblage, Brachythecium rutabulum-Fissidens taxifolius, characteristically occurs in late-successional fields and was scattered throughout the area sampled. A comparison of the results from Kent with those of a survey of Kentish fields (using a different methodology) by A.G. Side in 1973-74 suggests that the Bryum dichotomum-Marchantia polymorpha assemblage may possibly have replaced the Dicranella staphylina-Riccia glauca assemblage on acidic soils in the last 30 years. The considerable geographical variation within the arable flora of Britain and Ireland revealed by the survey should be taken into account when assessing the meagre evidence for historic changes in the arable bryophyte flora