Lars Hedenäs
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View article: Factors accounting for limited sexual reproduction in a long-lived unisexual plant species
Factors accounting for limited sexual reproduction in a long-lived unisexual plant species Open
Introduction Plant dispersal directly depends on reproduction success, and hence, on sexual systems. In bryophytes, wherein fertilization involves a continuous film of water between male and female sexual organs, reproduction in unisexual …
View article: Oxyrrhynchium hians (Brachytheciaceae, Bryophyta) includes several morphologically distinct and cryptic species in northwestern Europe
Oxyrrhynchium hians (Brachytheciaceae, Bryophyta) includes several morphologically distinct and cryptic species in northwestern Europe Open
A study of the variable species Oxyrrhynchium hians s.l. in NW Europe based on nuclear ITS, and plastid rpl16 and trnLtrnF, as well as morphology, revealed unsuspected species level diversity. Three taxa are distinguishable by morphology: …
View article: Molecular variation and phylogeography within European <i>Isothecium alopecuroides</i> and <i>Pseudisothecium myosuroides</i> (Bryophyta, Lembophyllaceae)
Molecular variation and phylogeography within European <i>Isothecium alopecuroides</i> and <i>Pseudisothecium myosuroides</i> (Bryophyta, Lembophyllaceae) Open
Earlier studies on Isothecium s.l. suggested potential interchange of genetic material between species that are nowadays known to belong to separate genera. In this study, we analyse the variation in three molecular markers (nuclear gpd; m…
View article: Integrative Taxonomy Reveals Hidden Diversity in the Aloina catillum Complex (Pottiaceae, Bryophyta)
Integrative Taxonomy Reveals Hidden Diversity in the Aloina catillum Complex (Pottiaceae, Bryophyta) Open
Aloina catillum is a variable moss typical of xerophytic environments in the Neotropics, characterized against other closely allied Aloina species with well-differentiated leaf border by its setae twisted to the left throughout. In order t…
View article: Phylogeographical patterns in the northwestern European moss <i>Scorpidium revolvens</i> (Sw. ex Anonymo) Rubers (Scorpidiaceae, Bryophyta)
Phylogeographical patterns in the northwestern European moss <i>Scorpidium revolvens</i> (Sw. ex Anonymo) Rubers (Scorpidiaceae, Bryophyta) Open
Introduction The phylogeography of Scorpidium revolvens (Sw. ex Anonymo) Rubers in northwestern Europe, primarily Scandinavia, was explored. Possibly because of human activity and atmospheric pollution, the species is sparser in the south …
View article: The supposedly well-known carbonate indicator Tortella tortuosa (Pottiaceae, Bryophyta) split into eight species in Europe
The supposedly well-known carbonate indicator Tortella tortuosa (Pottiaceae, Bryophyta) split into eight species in Europe Open
We present a first treatment of the Tortella tortuosa complex for Europe. We analysed molecular relationships based on the nuclear ITS and the plastid atpB-rbcL and rps4 in a network context and thereafter characterized the identified enti…
View article: Life-history characteristics and historical factors are important to explain regional variation in reproductive traits and genetic diversity in perennial mosses
Life-history characteristics and historical factors are important to explain regional variation in reproductive traits and genetic diversity in perennial mosses Open
Background and Aims Plants have evolved an unrivalled diversity of reproductive strategies, including variation in the degree of sexual vs. clonal reproduction. This variation has important effects on the dynamics and genetic structure of …
View article: Bryophytes of Europe Traits (<scp>BET</scp>) data set: A fundamental tool for ecological studies
Bryophytes of Europe Traits (<span>BET</span>) data set: A fundamental tool for ecological studies Open
Bryophytes are a diverse group of organisms with unique properties, yet they are severely underrepresented in plant trait databases. Building on the recently published European Red List of bryophytes and previous trait compilations, we pre…
View article: Fossil mosses from the Early Cretaceous Catefica mesofossil flora, Portugal – a window into the Mesozoic history of Bryophytes
Fossil mosses from the Early Cretaceous Catefica mesofossil flora, Portugal – a window into the Mesozoic history of Bryophytes Open
A diverse assemblage of mosses from the Early Cretaceous Catefica mesofossil flora, Portugal, is described based on fragments of charcoalified and lignitized gametophytes and a single spore capsule. Nine different gametophyte morphologies …
View article: An Early Pleistocene interglacial deposit at Pingorsuit, North‐West Greenland
An Early Pleistocene interglacial deposit at Pingorsuit, North‐West Greenland Open
At the Pingorsuit Glacier in North‐West Greenland, an organic‐rich deposit that had recently emerged from the retreating ice cap was discovered at an elevation of 480 m above sea level. This paper reports on macrofossil analyses of a coars…
View article: Distributions and habitats of the two partly allopatric cryptic species of the vulnerable moss <i>Hamatocaulis vernicosus</i> (Bryophyta) in Europe
Distributions and habitats of the two partly allopatric cryptic species of the vulnerable moss <i>Hamatocaulis vernicosus</i> (Bryophyta) in Europe Open
The geographical distributions of the two cryptic species of the wetland moss Hamatocaulis vernicosus were mapped for western, central and northern Europe, based on identifications of the two by the nuclear ITS1 + 2 and the plastid rpl16 a…
View article: Unveiling the nature of a miniature world: a horizon scan of fundamental questions in bryology
Unveiling the nature of a miniature world: a horizon scan of fundamental questions in bryology Open
Introduction. Half a century since the creation of the International Association of Bryologists, we carried out a review to identify outstanding challenges and future perspectives in bryology. Specifically, we have identified 50 fundamenta…
View article: Genetic variation and reproductive patterns in wetland mosses suggest efficient initial colonization of disturbed sites
Genetic variation and reproductive patterns in wetland mosses suggest efficient initial colonization of disturbed sites Open
To understand colonization processes, it is critical to fully assess the role of dispersal in shaping biogeographical patterns at the gene, individual, population, and community levels. We test two alternative hypotheses (H I and H II) for…
View article: Miocene Ethiopian amber: A new source of fossil cryptogams
Miocene Ethiopian amber: A new source of fossil cryptogams Open
Amber is renowned for the exceptional preservation state of its inclusions, allowing detailed morphological analysis and providing relevant environmental, palaeoecological, geographical, and geological information. Amber deposits are predo…
View article: Evidence of horizontal gene transfer between land plant plastids has surprising conservation implications
Evidence of horizontal gene transfer between land plant plastids has surprising conservation implications Open
Background and Aims Horizontal gene transfer (HGT) is an important evolutionary mechanism because it transfers genetic material that may code for traits or functions between species or genomes. It is frequent in mitochondrial and nuclear g…
View article: Cryptic and morphologically recognizable species diversity within Scandinavian Plagiopus oederianus (Bryophyta: Bartramiaceae)
Cryptic and morphologically recognizable species diversity within Scandinavian Plagiopus oederianus (Bryophyta: Bartramiaceae) Open
Based on studies of the nuclear marker ITS, the plastid ones atpB-rbcL and rpl16, and morphology, five species are recognizable within Scandinavian Plagiopus oederianus. Four of these species are cryptic, whereas the fifth one, Plagiopus a…
View article: Morphological characters and SNP markers suggest hybridization and introgression in sympatric populations of the pleurocarpous mosses Homalothecium lutescens and H. sericeum
Morphological characters and SNP markers suggest hybridization and introgression in sympatric populations of the pleurocarpous mosses Homalothecium lutescens and H. sericeum Open
Hybridization in bryophytes involves a fusion of gametes produced by haploid parental gametophytes of different species. The primary hybrid is thus the short-lived diploid sporophyte, which soon undergoes meiosis prior to the formation of …
View article: A revision of the genus Orthothecium (Plagiotheciaceae, Bryophyta) in northern Eurasia
A revision of the genus Orthothecium (Plagiotheciaceae, Bryophyta) in northern Eurasia Open
A revision of the genus Orthothecium involving a molecular phylogenetic approach was performed based on material from northern Eurasia with a particular focus on the territory of Russia.It showed that diversity of the genus in Asian Russia…
View article: Impacts of climatic extremes during MIS 3 on Alpine vegetation: evidence from Nesseltalgraben (SE Germany)
Impacts of climatic extremes during MIS 3 on Alpine vegetation: evidence from Nesseltalgraben (SE Germany) Open
<p>The effects of extreme climatic changes on Alpine ecosystems during the last glacial are poorly understood. The recently discovered Nesseltalgraben site in the northern Alps provides a high-resolution sediment sequence covering th…
View article: An annotated checklist of bryophytes of Europe, Macaronesia and Cyprus
An annotated checklist of bryophytes of Europe, Macaronesia and Cyprus Open
Following on from work on the European bryophyte Red List, the taxonomically and nomenclaturally updated spreadsheets used for that project have been expanded into a new checklist for the bryophytes of Europe. Methods. A steering group of …
View article: Gene transfer across species boundaries in bryophytes: evidence from major life cycle stages in Homalothecium lutescens and H. sericeum
Gene transfer across species boundaries in bryophytes: evidence from major life cycle stages in Homalothecium lutescens and H. sericeum Open
Background and Aims The mosses Homalothecium lutescens and H. sericeum are genetically, morphologically and ecologically differentiated; mixed populations sometimes occur. In sympatric populations, intermediate character states among gamet…
View article: Re-assessment of phosphorus availability in fens with varying contents of iron and calcium
Re-assessment of phosphorus availability in fens with varying contents of iron and calcium Open
Aim To further unravel P availability in mineral-rich fens, and test whether high Fe in the soil would lead to low P availability to the vegetation. Methods Mesotrophic fens were selected over gradients in Ca and Fe in central Sweden and t…
View article: Orthothecium lapponicum: a disjunctive Circum-Holarctic species
Orthothecium lapponicum: a disjunctive Circum-Holarctic species Open
Orthothecium lapponicum, considered by many authors as a mere infraspecific taxon of the widespread O. chryseon, was subsequently shown to be a morphologically distinct species.Initially known only from the mountains of Northern Sweden, su…
View article: The Scandinavian Syntrichia ruralis complex (Musci, Pottiaceae): a chaos of diversification
The Scandinavian Syntrichia ruralis complex (Musci, Pottiaceae): a chaos of diversification Open
This study focusses on the molecular and morphological variation among Scandinavian species within the Syntrichia ruralis complex (S. calcicola, S. norvegica, S. ruraliformis, S. ruralis) of the moss family Pottiaceae, plus the similar-loo…
View article: Episodic but ample sporophyte production in the moss <i>Drepanocladus turgescens</i> (Bryophyta: Amblystegiaceae) in SE Sweden
Episodic but ample sporophyte production in the moss <i>Drepanocladus turgescens</i> (Bryophyta: Amblystegiaceae) in SE Sweden Open
In the Baltic area, the long-lived dioicous wetland moss Drepanocladus turgescens (T.Jensen) Broth. produces sporophytes rarely and at irregular intervals. Based on surveys of sporophyte occurrences at 13 sites in two regions in northern G…