Aims: We introduce ReSurveyEurope — a new data source of resurveyed vegetation plots in Europe, compiled by a collaborative network of vegetation scientists. We describe the scope of this initiative, provide an overview of currently available data, governance, data contribution rules, and accessibility. In addition, we outline further steps, including potential research questions.Results: ReSurveyEurope includes resurveyed vegetation plots from all habitats. Version 1.0 of ReSurveyEurope contains 283,135 observations (i.e., individual surveys of each plot) from 79,190 plots sampled in 449 independent resurvey projects. Of these, 62,139 (78%) are permanent plots, that is, marked in situ, or located with GPS, which allow for high spatial accuracy in resurvey. The remaining 17,051 (22%) plots are from studies in which plots from the initial survey could not be exactly relocated. Four data sets, which together account for 28,470 (36%) plots, provide only presence/absence information on plant species, while the remaining 50,720 (64%) plots contain abundance information (e.g., percentage cover or cover–abundance classes such as variants of the Braun‐Blanquet scale). The oldest plots were sampled in 1911 in the Swiss Alps, while most plots were sampled between 1950 and 2020.Conclusions: ReSurveyEurope is a new resource to address a wide range of research questions on fine‐scale changes in European vegetation. The initiative is devoted to an inclusive and transparent governance and data usage approach, based on slightly adapted rules of the well‐established European Vegetation Archive (EVA). ReSurveyEurope data are ready for use, and proposals for analyses of the data set can be submitted at any time to the coordinators. Still, further data contributions are highly welcome.

Calypogeia is a genus in Pacific Asia that is difficult to classify taxonomically. These difficulties arise from (1) considering the presence of oil bodies as anatomical characters for taxonomic differentiation, (2) the wide occurrence of sibling, semicryptic and geographical vicariant taxa and (3) the inevitable need to organize new datasets for molecular genetic revision of the genus. The present study uses an integrative approach, including molecular genetic, morphological, chorological and ecological methods, to understand the taxonomy of the genus in Amphi-Pacific Asia. As a result, a set of new-to-science taxa was revealed, and the suite of morphological features necessary for reliable discrimination of the taxa was revised. These results are based on the study of a large set of ‘fresh’ collections suitable for molecular analysis and morphological comparison and include data on oil bodies. The most basal branch in Calypogeia s.l. is segregated into a new genus, Asperifolia. Descriptions of the new taxa and the key to Calypogeia in Vietnam are provided.

Vegetation-plot resurvey data are a main source of information on terrestrial biodiversity change, with records reaching back more than one century. Although more and more data from re-sampled plots have been published, there is not yet a comprehensive open-access dataset available for analysis. Here, we compiled and harmonised vegetation-plot resurvey data from Germany covering almost 100 years. We show the distribution of the plot data in space, time and across habitat types of the European Nature Information System (EUNIS). In addition, we include metadata on geographic location, plot size and vegetation structure. The data allow temporal biodiversity change to be assessed at the community scale, reaching back further into the past than most comparable data yet available. They also enable tracking changes in the incidence and distribution of individual species across Germany. In summary, the data come at a level of detail that holds promise for broadening our understanding of the mechanisms and drivers behind plant diversity change over the last century.

The influence of the pH of the bark of two tree species belonging at Nothofagus genus on the lichen and bryophyte richness was studied. The tree species considered for this study were: N. dombeyi and N. macracarpa situated in two pre-Andean localities; one in the "Radal Siete Tazas" National Reserve and the other in the "Altos de Lircay" National Reserve, Central Chile. In each locality, a total of 20 phorophytes were examined: 10 N. dombeyi and 10 N. obliqua. In each phorophyte, the total lichens and bryophytes were inventoried, the diameter of each one of the phorophytes was measured at breast height (DHA) and, in addition, 10 g of bark were extracted in order to check the pH. The pH of the bark was determined by means of the Mezger’s method (1996) and afterwards related to the lichen and bryophyte richness found in the phorophytes of each tree species sampled in both localities. In both localities, the pH of bark of the N. dombeyi phorophytes was markedly more acidic than the one of the N. obliqua. Statistical analyses show a significant difference between the pH of one species and other. The pH of the barks of N. dombeyi and N. obliqua phorophytes, in both localities, not correlated with the richness of the different groups (lichens, mosses and liverworts). However, according to the inventories carried, it observed that some species of lichens have a close relation with the pH of the bark of one or other of the two tree species studied and only a low percentage of them were indifferent to pH of the phorophytes. The mosses preferred bark with pH near to neutrality such as those of N. obliqua, while the liverworts preferred bark were more acid, such as the ones of N. dombeyi.

Introduction. The Plagiothecium flora of Myanmar is revised based on recent collections by G. Miehe and colleagues. Methods. Specimens were studied in the herbarium, and a review of relevant type material was undertaken. Key results and Conclusions. We recognise six species from Myanmar, of which two (Plagiothecium nemorale and P. paleaceum) were previously known, and four (P. euryphyllum, P. handelii, P. noricum, and P. subglaucum) are newly recorded. Although bona fide P. neckeroideum is also likely to occur, previous records of P. neckeroideum from Myanmar were probably P. subglaucum [syn. P. formosicum]. This smaller relative of P. neckeroideum, which produces characteristic clusters of simple gemmae at the leaf tips, was the most common species of Plagiothecium in the collections. Plagiothecium noricum is an extremely rare species previously only known from the Alps. The other five species were already known from the Sino-Himalayan region. Our study of type specimens shows that the Myanmar endemic Plagiothecium svihlae is a synonym of Pseudotaxiphyllum pohliaecarpum. Isopterygium serrulatum of Himalayan India (lectotypified here) and I. vineale of Hawaii are also synonyms of P. pohliaecarpum. The Sino-Himalayan endemic Plagiothecium subulatum is better treated as a species of Vesicularia. The non-synonymous names P. noricum and P. neckeroideum var. myurum are both lectotypified.

Müller, F. 2014. Bartramia aprica — the correct name for the Mediterranean and western North American species historically recognized as “Bartramia stricta”. — Herzogia 27: 211–214. Type material of Bartramia aprica was investigated. The material belongs to the species long recognized as “Bartramia stricta”. As Bartramia stricta is now viewed as a species with a southern South American distribution, the new name Bartramia rosamrosiae was recently introduced to accommodate the Mediterranean and western North American species. As B. aprica was validly described earlier this name has priority over the name B. rosamrosiae. Müller, F. 2014. Bartramia aprica — der korrekte Name für das lange Zeit als “Bartramia stricta” bezeichnete Moos des Mittelmeergebietes und des westlichen Nordamerikas. — Herzogia 27: 211–214. Typusmaterial von Bartramia aprica wurde untersucht. Das Material gehört zu der Art, die lange als “Bartramia stricta” bezeichnet wurde. Da Bartramia stricta in ihrer Verbreitung auf das südliche Südamerika beschränkt ist, wurde neuerdings der Name Bartramia rosamrosiae für die im Mediterrangebiet und im westlichen Nordamerika vorkommende Sippe eingeführt. Da B. aprica einen älteren Namen für diese Sippe darstellt, besitzt er Priorität gegenüber B. rosamrosiae.