D. Buono, G. Khan, K. B. von Hagen, P. A. Kosachev, E. Mayland-Quellhorst, S. L. Mosyakin, und D. C. Albach, "Comparative Phylogeography of Veronica spicata and V. longifolia (Plantaginaceae) Across Europe: Integrating Hybridization and Polyploidy in Phylogeography" Frontiers in Plant Science, vol. 11.
doi: 10.3389/fpls.2020.588354
@Article{Buono_2021a,
author = {Daniele Buono and Gulzar Khan and Klaus Bernhard von Hagen and Petr A. Kosachev and Eike Mayland-Quellhorst and Sergei L. Mosyakin and Dirk C. Albach},
journal = {Frontiers in Plant Science},
title = {Comparative Phylogeography of Veronica spicata and V. longifolia (Plantaginaceae) Across Europe: Integrating Hybridization and Polyploidy in Phylogeography},
year = {2021},
month = feb, volume = {11},
creationdate = {2021-09-10T17:16:00},
doi = {10.3389/fpls.2020.588354},
modificationdate = {2021-09-10T17:16:00},
publisher = {Frontiers Media {SA}},
}
S. Pfanzelt, J. Ptacek, P. Sklenar, K. B. von Hagen, und D. C. Albach, "Genome Size in South American Gentianella (Gentianaceae, Swertiinae), with a Special Emphasis on Species from the Bolivian and Ecuadorian Andes" Annals of the Missouri Botanical Garden, vol. 106.
doi: 10.3417/2020610
@Article{Pfanzelt_2021a,
author = {Simon Pfanzelt and Jan Ptacek and Petr Sklenar and Klaus Bernhard von Hagen and Dirk C. Albach},
journal = {Annals of the Missouri Botanical Garden},
title = {Genome Size in South American Gentianella (Gentianaceae, Swertiinae), with a Special Emphasis on Species from the Bolivian and Ecuadorian Andes},
year = {2021},
month = mar, pages = {31--46},
volume = {106},
creationdate = {2021-09-10T17:16:00},
doi = {10.3417/2020610},
modificationdate = {2021-09-14T13:26:17},
publisher = {Missouri Botanical Garden Press},
}
K. B. von Hagen, "Wilhelm Meyer (1867-1953) und der Botanische Garten zu Oldenburg - Naturkunde und Naturschutz als Lebensaufgabe" Oldenburger Forschungen, vol. 34.
@Article{Hagen_2020,
author = {von Hagen, K. B.},
journal = {Oldenburger Forschungen},
title = {Wilhelm Meyer (1867-1953) und der Botanische Garten zu Oldenburg - Naturkunde und Naturschutz als Lebensaufgabe},
year = {2020},
pages = {151--172},
volume = {34},
creationdate = {2021-09-10T17:16:00},
editor = {Janisch, P.},
modificationdate = {2021-09-10T17:16:00},
}
S. Pfanzelt, D. C. Albach, und K. B. von Hagen, "Extremely low levels of chloroplast genome sequence variability in Astelia pumila (Asteliaceae, Asparagales)" PeerJ, vol. 7, p. 6244.
doi: 10.7717/peerj.6244
@Article{Pfanzelt_2019b,
author = {Simon Pfanzelt and Dirk C. Albach and Klaus Bernhard von Hagen},
journal = {{PeerJ}},
title = {Extremely low levels of chloroplast genome sequence variability in Astelia pumila (Asteliaceae, Asparagales)},
year = {2019},
month = jan, pages = {e6244},
volume = {7},
creationdate = {2021-09-10T17:16:00},
doi = {10.7717/peerj.6244},
modificationdate = {2021-09-14T13:26:25},
publisher = {{PeerJ}},
}
S. Pfanzelt, P. Sarhanova, D. C. Albach, und K. B. Hagen, "Tabula rasa in the Patagonian Channels II: The cushion peat bog species Astelia pumila (Asteliaceae) and Donatia fascicularis (Stylidiaceae) survived the last glacial in south-central Chile" Journal of Biogeography, vol. 46, iss. 5.
doi: 10.1111/jbi.13562
@Article{Pfanzelt_2019a,
author = {Simon Pfanzelt and Petra Sarhanova and Dirk C. Albach and Klaus Bernhard Hagen},
journal = {Journal of Biogeography},
title = {Tabula rasa in the Patagonian Channels II: The cushion peat bog species Astelia pumila (Asteliaceae) and Donatia fascicularis (Stylidiaceae) survived the last glacial in south-central Chile},
year = {2019},
month = apr, number = {5},
pages = {899--914},
volume = {46},
creationdate = {2021-09-10T17:16:00},
doi = {10.1111/jbi.13562},
modificationdate = {2021-09-14T13:26:31},
publisher = {Wiley},
}
S. Pfanzelt, D. C. Albach, und K. B. von Hagen, "Tabula rasa in the Patagonian Channels? The phylogeography of Oreobolus obtusangulus (Cyperaceae)" Molecular Ecology, vol. 26, iss. 15.
doi: 10.1111/mec.14156
@Article{Pfanzelt_2017a,
author = {Simon Pfanzelt and Dirk C. Albach and Klaus Bernhard von Hagen},
journal = {Molecular Ecology},
title = {Tabula rasa in the Patagonian Channels? The phylogeography of Oreobolus obtusangulus (Cyperaceae)},
year = {2017},
month = may, number = {15},
pages = {4027--4044},
volume = {26},
creationdate = {2021-09-10T17:16:00},
doi = {10.1111/mec.14156},
modificationdate = {2021-09-14T13:09:12},
publisher = {Wiley},
}
U. Aderholz, D. Albach, K. B. von Hagen, C. Hößle, U. Kapteina, und B. Weusmann, "Pflanzen forschend entdecken - Experimente zur Sekundarstufe 1." Baltmannsweiler: Schneider Verlag Hohengehren.
@InBook{Aderholz_2016,
author = {Aderholz, U and Albach, D and von Hagen, K. B. and Hößle, C and Kapteina, U and Weusmann, B},
publisher = {Schneider Verlag Hohengehren},
title = {Pflanzen forschend entdecken - Experimente zur Sekundarstufe 1},
year = {2016},
address = {Baltmannsweiler},
creationdate = {2021-09-10T17:16:00},
modificationdate = {2021-09-10T17:16:00},
}
K. B. von Hagen, "Halenia." R. Benal S.R. Gradstein, C. M. Ed., Universidad Nacional de Colombia - Sede Bogotá., Facultad de Ciencias, Instituto de Ciencias Naturales: Universidad Nacional de Colombia - Sede Bogotá., Facultad de Ciencias, Instituto de Ciencias Naturales, vol. 1.
@InBook{Hagen_2016,
author = {von Hagen, K. B.},
editor = {R. Benal, S.R. Gradstein, M. Celis},
pages = {2035--2037},
publisher = {Universidad Nacional de Colombia - Sede Bogotá., Facultad de Ciencias, Instituto de Ciencias Naturales},
title = {Halenia.},
year = {2016},
address = {Universidad Nacional de Colombia - Sede Bogotá., Facultad de Ciencias, Instituto de Ciencias Naturales},
number = {1},
volume = {1},
booktitle = {Catálogo de plantas y liquenes de Colombia},
creationdate = {2021-09-10T17:16:00},
modificationdate = {2021-09-14T13:24:37},
}
S. Pfanzelt und K. B. von Hagen, "Morphological variation of Gentiana section Chondrophyllae in South America and taxonomic implications" Plant Systematics and Evolution, vol. 302, iss. 2.
doi: 10.1007/s00606-015-1250-x
@Article{Pfanzelt_2016,
author = {Pfanzelt, Simon and von Hagen, Klaus Bernhard},
journal = {Plant Systematics and Evolution},
title = {Morphological variation of Gentiana section Chondrophyllae in South America and taxonomic implications},
year = {2016},
issn = {0378-2697},
month = feb, number = {2},
pages = {155--172},
volume = {302},
abstract = {Gentiana species and varieties in the Andes of South America are morphologically weakly differentiated and geographical distribution ranges are not known. Here, we recorded 20 morphological characters for 135 individuals of Gentiana from within and outside South America, and observed four additional characters from a large collection of georeferenced flower photographs. To assess geographical patterns and draw taxonomic consequences, the characters were evaluated individually using box plots and histograms, and together using multivariate ordination plots. Our data support the recognition of two species: one in northern South America, G. sedifolia Kunth, and one in southern South America, G. gayi Griseb., which seem to intergrade in southern Bolivia approximately where wet puna converges into dry puna vegetation. Unusually small individuals of the southern lineage occur in the very South (>45°S). We treat them as G. gayi subsp. magellanica (Kusn.) S.Pfanzelt et K.B.Hagen comb. et stat. nov. We found no support for other previously described species or varieties and if they exist they will be of local distribution only. The respective lectotypifications are made. In our preferred scenario, G. sedifolia and G. gayi have colonized South America independently from the northern hemisphere, although this was not unequivocal and both species are closely related.},
creationdate = {2021-09-10T17:16:00},
date = {2016-02-01},
doi = {10.1007/s00606-015-1250-x},
file = {:http\://link.springer.com/openurl/pdf?id=doi\:10.1007/s00606-015-1250-x:PDF},
modificationdate = {2021-09-14T13:09:52},
publisher = {Springer},
}
J. W. Kadereit und K. B. von Hagen, "Vom Werden der Vielfalt: Artbildung am Beispiel der Enziangewächse" , Beck, E. Ed., Weinheim: Wiley VCH.
@InBook{Kadereit_2012,
author = {Kadereit, J. W. and von Hagen, K. B.},
editor = {Beck, E.},
pages = {60--67},
publisher = {Wiley VCH},
title = {Vom Werden der Vielfalt: Artbildung am Beispiel der Enziangewächse},
year = {2012},
address = {Weinheim},
booktitle = {Die Vielfalt des Lebens},
creationdate = {2021-09-14T10:58:27},
date = {2012},
modificationdate = {2021-09-14T10:59:50},
}
H. R. Hamasha, K. B. von Hagen, und M. Röser, "Stipa (Poaceae) and allies in the Old World: molecular phylogenetics realigns genus circumscription and gives evidence on the origin of American and Australian lineages" Plant Systematics and Evolution, vol. 298, iss. 2.
doi: 10.1007/s00606-011-0549-5
@Article{Hamasha_2011a,
author = {Hassan R. Hamasha and Klaus Bernhard von Hagen and Martin Röser},
journal = {Plant Systematics and Evolution},
title = {Stipa (Poaceae) and allies in the Old World: molecular phylogenetics realigns genus circumscription and gives evidence on the origin of American and Australian lineages},
year = {2011},
month = {nov},
number = {2},
pages = {351--367},
volume = {298},
creationdate = {2021-09-14T10:57:36},
doi = {10.1007/s00606-011-0549-5},
modificationdate = {2021-09-14T13:19:52},
publisher = {Springer Science and Business Media {LLC}},
}
M. H. Hoffmann, K. B. von Hagen, E. Hörandl, M. Röser, und N. V. Tkach, "Sources of the Arctic Flora: Origins of Arctic Species in Ranunculus and Related Genera" International Journal of Plant Sciences, vol. 171, iss. 1.
doi: 10.1086/647918
@Article{Hoffmann_2010,
author = {Matthias H. Hoffmann and Klaus Bernhard von Hagen and Elvira Hörandl and Martin Röser and Natalia V. Tkach},
journal = {International Journal of Plant Sciences},
title = {Sources of the Arctic Flora: Origins of Arctic Species in Ranunculus and Related Genera},
year = {2010},
month = {jan},
number = {1},
pages = {90--106},
volume = {171},
doi = {10.1086/647918},
modificationdate = {2021-09-14T13:19:25},
publisher = {University of Chicago Press},
}
U. Wahrmund, H. Heklau, M. Röser, A. Kästner, E. Vitek, F. Ehrendorfer, und K. B. von Hagen, "A molecular phylogeny reveals frequent changes of growth form in Carlina (Asteraceae)" Taxon, vol. 59, iss. 2.
doi: 10.1002/tax.592003
@Article{Wahrmund_2010a,
author = {Ute Wahrmund and Heike Heklau and Martin Röser and Arndt Kästner and Ernst Vitek and Friedrich Ehrendorfer and Klaus Bernhard von Hagen},
journal = {Taxon},
title = {A molecular phylogeny reveals frequent changes of growth form in Carlina (Asteraceae)},
year = {2010},
month = {apr},
number = {2},
pages = {367--378},
volume = {59},
creationdate = {2021-09-14T10:56:42},
doi = {10.1002/tax.592003},
modificationdate = {2021-09-14T13:19:44},
publisher = {Wiley},
}
P. Maas, L. Struwe, und K. B. von Hagen, "Gentianaceae" , Hokche O., B. P. E. und Huber, O. Eds., Fundación Instituto Botánico de Venezuela Dr. Tobias Lasser, Caracas. vol. Nuevo Catálogo de la Flora Vascular de Venezuela.
@InBook{Maas_2008,
author = {Maas, P and Struwe, L and von Hagen, K. B.},
editor = {Hokche, O., P. E. Berry, and O. Huber},
pages = {403--408},
publisher = {Fundación Instituto Botánico de Venezuela Dr. Tobias Lasser, Caracas.},
title = {Gentianaceae},
year = {2008},
volume = {Nuevo Catálogo de la Flora Vascular de Venezuela.},
creationdate = {2021-09-14T10:45:41},
date = {2008},
modificationdate = {2021-09-14T13:12:52},
}
P. Chassot und K. B. von Hagen, "Pollen morphology of the Swertiinae (Gentianaceae): phylogenetic implications" Botanical Journal of the Linnean Society, vol. 157, iss. 2.
doi: 10.1111/j.1095-8339.2008.00798.x
@Article{CHASSOT_2008a,
author = {Chassot, P. and von Hagen, K. B.},
journal = {Botanical Journal of the Linnean Society},
title = {Pollen morphology of the Swertiinae (Gentianaceae): phylogenetic implications},
year = {2008},
month = {jun},
number = {2},
pages = {323--341},
volume = {157},
creationdate = {2021-09-14T09:53:54},
doi = {10.1111/j.1095-8339.2008.00798.x},
modificationdate = {2021-09-14T10:35:54},
publisher = {Oxford University Press ({OUP})},
}
B. K. von Hagen, G. Seidler, und E. Welk, "New evidence for a postglacial homoploid hybrid origin of the widespread Central European Scabiosa columbaria L. s. str. (Dipsacaceae)" Plant Systematics and Evolution, vol. 274, iss. 3-4.
doi: 10.1007/s00606-008-0046-7
@Article{Hagen_2008,
author = {K. Bernhard von Hagen and Gunnar Seidler and Erik Welk},
journal = {Plant Systematics and Evolution},
title = {New evidence for a postglacial homoploid hybrid origin of the widespread Central European Scabiosa columbaria L. s. str. (Dipsacaceae)},
year = {2008},
month = {jun},
number = {3-4},
pages = {179--191},
volume = {274},
creationdate = {2021-09-14T10:36:37},
doi = {10.1007/s00606-008-0046-7},
modificationdate = {2021-09-14T10:36:37},
publisher = {Springer Science and Business Media {LLC}},
}
N. V. Tkach, M. H. Hoffmann, M. Röser, und K. B. von Hagen, "Temporal patterns of evolution in the Arctic explored in Artemisia L. (Asteraceae) lineages of different age" Plant Ecology & Diversity, vol. 1, iss. 2.
doi: 10.1080/17550870802331912
@Article{Tkach_2008a,
author = {Natalia V. Tkach and Matthias H. Hoffmann and Martin Röser and K. B. von Hagen},
journal = {Plant Ecology {\&} Diversity},
title = {Temporal patterns of evolution in the Arctic explored in Artemisia L. (Asteraceae) lineages of different age},
year = {2008},
month = {nov},
number = {2},
pages = {161--169},
volume = {1},
creationdate = {2021-09-14T10:37:41},
doi = {10.1080/17550870802331912},
modificationdate = {2021-09-14T13:18:57},
publisher = {Informa {UK} Limited},
}
K. B. von Hagen, "Description of new taxa of Halenia Borkh. (Gentianaceae) from Colombia and Venezuela with significance for testing a key innovation hypothesis" Organisms Diversity and Evolution, vol. 7, iss. 1.
doi: 10.1016/j.ode.2005.11.003
@Article{Hagen_2007,
author = {Klaus Bernhard von Hagen},
journal = {Organisms Diversity and Evolution},
title = {Description of new taxa of Halenia Borkh. (Gentianaceae) from Colombia and Venezuela with significance for testing a key innovation hypothesis},
year = {2007},
month = {apr},
number = {1},
pages = {1--11},
volume = {7},
creationdate = {2021-09-14T09:53:12},
doi = {10.1016/j.ode.2005.11.003},
modificationdate = {2021-09-14T13:11:39},
publisher = {Elsevier {BV}},
}
N. V. Tkach, M. H. Hoffmann, M. Röser, A. A. Korobkov, und K. B. von Hagen, "Parallel evolutionary patterns in multiple lineages of arctic Artemisia L. (Asteraceae)" Evolution.
doi: 10.1111/j.1558-5646.2007.00270.x
@Article{Tkach_2007a,
author = {Natalia V. Tkach and Matthias Heinrich Hoffmann and Martin Röser and Alexander Alexandrovich Korobkov and Klaus Bernhard von Hagen},
journal = {Evolution},
title = {Parallel evolutionary patterns in multiple lineages of arctic Artemisia L. (Asteraceae)},
year = {2007},
month = {nov},
number = {0},
pages = {071101082849002--???},
volume = {0},
creationdate = {2021-09-14T10:43:32},
doi = {10.1111/j.1558-5646.2007.00270.x},
modificationdate = {2021-09-14T10:44:41},
publisher = {Wiley},
}
K. B. von Hagen, "Revidierte Belege aus dem "Herbarium Istriacum"" , Starmühler, W. Ed.,
@InBook{Hagen_2005a,
author = {von Hagen, K. B.},
chapter = {Teil VIII. - Carinthia II.},
editor = {Starmühler, W.},
pages = {515--654},
title = {Revidierte Belege aus dem "Herbarium Istriacum"},
year = {2005},
booktitle = {Vorarbeiten zu einer "Flora von Istrien"},
creationdate = {2021-09-14T09:44:07},
date = {2005},
modificationdate = {2021-09-14T09:49:39},
}
K. B. von Hagen, "Checklist für die Gentianaceae" , Starmühler, W. Ed.,
@InBook{Hagen_2005b,
author = {von Hagen, K. B.},
chapter = {Teil VIII. - Carinthia II.},
editor = {Starmühler, W.},
pages = {520--522},
title = {Checklist für die Gentianaceae},
year = {2005},
booktitle = {Vorarbeiten zu einer "Flora von Istrien"},
creationdate = {2021-09-14T09:48:18},
date = {2005},
modificationdate = {2021-09-14T09:49:40},
}
K. B. von Hagen, "SpecRat 1.0, a small computer program to study shifts in speciation rates" Schlechtendalia, vol. 10.
@Article{Hagen_2003,
author = {von Hagen, K. B.},
journal = {Schlechtendalia},
title = {SpecRat 1.0, a small computer program to study shifts in speciation rates},
year = {2003},
pages = {67--73},
volume = {10},
creationdate = {2021-09-14T09:37:29},
date = {2003},
modificationdate = {2021-09-14T09:38:13},
}
K. B. von Hagen und J. W. Kadereit, "The diversification of Halenia (Gentianaceae): Ecological opportunity versus key innovation" Evolution, vol. 57, iss. 11.
doi: 10.1111/j.0014-3820.2003.tb01495.x
@Article{Hagen_2003,
author = {K. B. von Hagen and J. W. Kadereit},
journal = {Evolution},
title = {The diversification of Halenia (Gentianaceae): Ecological opportunity versus key innovation},
year = {2003},
month = {nov},
number = {11},
pages = {2507--2518},
volume = {57},
creationdate = {2021-09-14T09:40:54},
doi = {10.1111/j.0014-3820.2003.tb01495.x},
modificationdate = {2021-09-14T09:42:30},
publisher = {Wiley},
}
K. B. von Hagen und J. W. Kadereit, "Phylogeny and Flower Evolution of the Swertiinae (Gentianaceae-Gentianeae): Homoplasy and the Principle of Variable Proportions" Systematic Botany, vol. 27, iss. 3.
@Article{Hagen_2002,
author = {von Hagen, K. B. and Kadereit, J. W.},
journal = {Systematic Botany},
title = {Phylogeny and Flower Evolution of the Swertiinae (Gentianaceae-Gentianeae): Homoplasy and the Principle of Variable Proportions},
year = {2002},
number = {3},
pages = {548--572},
volume = {27},
creationdate = {2021-09-14T09:33:03},
date = {2002},
modificationdate = {2021-09-14T09:33:28},
}
L. Struwe, J. W. Kadereit, J. Klackenberg, J. Nilsson, M. Thiv, K. B. von Hagen, und V. Albert, "Systematics, character evolution, and biogeography of Gentianaceae, including a new tribal and subtribal classification" , Struwe, L. und Albert, V. A. Eds., Cambridge: Cambridge University Press.
@InBook{Struwe_2002,
author = {Struwe, L and Kadereit, J. W. and Klackenberg, J and Nilsson, J and Thiv, M and von Hagen, K. B. and Albert, V},
editor = {Struwe, L. and Albert, V. A.},
pages = {21--309},
publisher = {Cambridge University Press},
title = {Systematics, character evolution, and biogeography of Gentianaceae, including a new tribal and subtribal classification},
year = {2002},
address = {Cambridge},
booktitle = {Gentianaceae - Systematics and Natural History},
creationdate = {2021-09-14T09:35:43},
date = {2002},
modificationdate = {2021-09-14T13:11:03},
}
K. B. von Hagen und J. W. Kadereit, "The phylogeny of (Gentianaceae) and its colonization of the southern hemisphere as revealed by nuclear and chloroplast DNA sequence variation" Organisms Diversity and Evolution, vol. 1, iss. 1.
doi: 10.1078/1439-6092-00005
@Article{Hagen_2001a,
author = {von Hagen, K. B. and Kadereit, J. W.},
journal = {Organisms Diversity and Evolution},
title = {The phylogeny of (Gentianaceae) and its colonization of the southern hemisphere as revealed by nuclear and chloroplast {DNA} sequence variation},
year = {2001},
number = {1},
pages = {61--79},
volume = {1},
creationdate = {2021-09-14T09:27:41},
doi = {10.1078/1439-6092-00005},
modificationdate = {2021-09-14T13:10:35},
publisher = {Elsevier {BV}},
}
K. B. von Hagen und J. W. Kadereit, "Notes on the systematics and evolution of Gentiana sect. Ciminalis" Bot. Jahrb. Syst, vol. 122.
@Article{Hagen_2000,
author = {von Hagen, K. B. and Kadereit, J. W.},
journal = {Bot. Jahrb. Syst},
title = {Notes on the systematics and evolution of Gentiana sect. Ciminalis},
year = {2000},
pages = {305--339},
volume = {122},
creationdate = {2021-09-14T09:26:04},
date = {2000},
modificationdate = {2021-09-14T09:29:32},
}
K. B. Hungerer und J. W. Kadereit, "The phylogeny and biogeography of Gentiana L. sect. Ciminalis (Adans.) Dumort.: A historical interpretation of distribution ranges in the European high mountains" Perspectives in Plant Ecology, Evolution and Systematics, vol. 1, iss. 1.
doi: 10.1078/1433-8319-00055
@Article{Hungerer_1998a,
author = {K. B. Hungerer and Joachim W. Kadereit},
journal = {Perspectives in Plant Ecology, Evolution and Systematics},
title = {The phylogeny and biogeography of Gentiana L. sect. Ciminalis (Adans.) Dumort.: A historical interpretation of distribution ranges in the European high mountains},
year = {1998},
month = {jan},
number = {1},
pages = {121--135},
volume = {1},
creationdate = {2021-09-14T09:00:09},
doi = {10.1078/1433-8319-00055},
modificationdate = {2021-09-14T13:17:34},
publisher = {Elsevier {BV}},
}
