Paleobiology of the genus &lt;i&gt;Hypericum&lt;/i&gt; (Hypericaceae): a survey of the fossil record and its palaeogeographic implications

Meseguer, Andrea S.; Sanmartín, Isabel

doi:10.3989/ajbm.2306

Cited by 20 publications

(28 citation statements)

References 34 publications

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“…S4.1), which employed a different set of fossils, and from a more comprehensive analysis of Malpighiales dating the crown group of the New World clade of Hypericum at 25 Ma (Xi et al, 2012), which is otherwise in agreement with our estimates for this node (29 Ma; HDP 23-33). Nürk et al's biogeographic reconstruction is also in conflict with the boreotropical hypothesis (stem lineages were reconstructed during the greenhouse period of the Eocene, including the EECO, in Africa) and in disagreement with the fossil record (Meseguer & Sanmartín, 2012) (see further discussion in Appendix S3).…”

Section: Geographic Projections Of These Climatic Preferences Show CLmentioning

confidence: 98%

“…out of 478) (Appendix 1 in Supplementary Information). Fossil data (14 records from the Late Eocene to the Oligocene; Appendix S2) were obtained from the literature (Meseguer & Sanmartín, 2012;Meseguer et al, 2015). A detailed discussion on the fossil record of Hypericum from Meseguer et al (2015) can be found in Appendix S3.…”

Section: Compilation Of Distributional and Climatic Datamentioning

confidence: 99%

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Reconstructing deep-time paleoclimate legacies unveil the demise and turnover of the ancient (boreo)tropical flora

Sánchez

Lobo²,

Cornuault

et al. 2017

Preprint

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Aim:Since the Late Cretaceous, the Earth has gone through periods of climate change similar in scale and pace to the warming trend observed today in the Anthropocene. The impact of these ancient climatic events on the evolutionary trajectories of organisms provides clues on the organismal response to climate change, including extinction, migration or persistence. Here, we examine the evolutionary response to climate cooling/warming events of the clusioid families Calophyllaceae, Podostemaceae and Hypericaceae (CPH), and the genus Hypericum as test cases. Location: Holarctic. Time period: Late Cretaceous-CenozoicMajor taxa studied: angiosperms Methods:We use paleoclimate simulations, species distribution models and phylogenetic comparative approaches calibrated with fossils.Results: Ancestral CPH lineages could have been distributed in the Holarctic 100 Ma, occupying tropical subhumid assemblages, a finding supported by the fossil record.Expansion to closed-canopy tropical rain forests occurred after 60 Ma, in the Cenozoic, in agreement with earlier ideas of a post-Cretaceous origin of current tropical rain forest.Cooling during this period triggered diversification declines on CPH tropical lineages, and was associated with a climatic shift towards temperate affinities in Hypericum. Hypericum subsequently migrated to tropical mountains where it encountered different temperate conditions than in the Holarctic. Main conclusions:We hypothesize that most clusioid CPH lineages failed to adapt to temperate regimes during periods of Cenozoic climate change, and thus went extinct in the Holarctic. In contrast, boreotropical descendants including Hypericum that underwent niche evolution demonstrated selective advantages as climates became colder. Our results points toward macroevolutionary trajectories involving the altering fates of closely related clades that adapt to periods of global climate change versus those that do not. Moreover, they suggest the hypothesis that potentially many clades, particularly inhabitants of boreotropical floras, were likely extirpated from the Holarctic and persist today (if at all) in more southern tropical locations.

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Section: Geographic Projections Of These Climatic Preferences Show CLmentioning

confidence: 98%

Section: Compilation Of Distributional and Climatic Datamentioning

confidence: 99%

Reconstructing deep-time paleoclimate legacies unveil the demise and turnover of the ancient (boreo)tropical flora

Sánchez

Lobo²,

Cornuault

et al. 2017

Preprint

Self Cite

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“…Hypericum L. is the largest genus of the family Hypericaceae and includes 490 species of herbs, shrubs or trees distributed almost worldwide (Robson ). It is a relatively old genus dating back to the Early–Mid Tertiary (Meseguer and Sanmartín ).…”

Section: Introductionmentioning

confidence: 99%

“…It is mainly distributed in the temperate regions of the Northern Hemisphere, but also in high‐altitude tropical and subtropical areas, and in a large variety of ecosystems (Meseguer et al 2013). Robson has prepared a detailed taxonomic treatment of the genus in a series of monographs (Robson 1977, 1981, 1985, 1987, 1990, 1996, 2001, 2002, 2006, 2010a, b, ). In these, the main diagnostic characters for the classification of the genus were identified, numerous new species were described and an infra‐generic classification into 36 sections was proposed.…”

Section: Introductionmentioning

confidence: 99%

“…Hypericum L. is the largest genus of the family Hypericaceae and includes 490 species of herbs, shrubs or trees distributed almost worldwide (Robson 2012). It is a relatively old genus dating back to the Early-Mid Tertiary (Meseguer and Sanmartín 2012). It is mainly distributed in the temperate regions of the Northern Hemisphere, but also in high-altitude tropical and subtropical areas, and in a large variety of ecosystems (Meseguer et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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A new Hypericum (sect. Drosocarpium, Hypericaceae) from the Cyclades Islands (Greece)

Trigas

2018

Nordic Journal of Botany

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Hypericum cycladicum Trigas sp. nov. (Hypericaceae) from the Cyclades Islands (Greece) is described and illustrated. It belongs to H. sect. Drosocarpium and its closest relatives appears to be the Cretan endemic H. trichocaulon and the widespread Mediterranean H. perfoliatum. The new species is currently known from Andros, Paros and Naxos islands, but probably has a wider distribution within the Cyclades island group.

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Seed morphology of Hypericum (Hypericaceae) in China and its taxonomic significance

Bai

Zhao

Drew

et al. 2023

Microscopy Res & Technique

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The seed morphology of 40 taxa within the genus Hypericum (Hypericaceae) from China, representing 9 sections of the genus, was examined using both Light and Scanning Electron Microscopy to evaluate the taxonomic relevance of macro‐ and micro‐morphological features. Details articulating variation in seed size, color, shape, appendages, and seed coat ornamentation are described, illustrated, and compared, and their taxonomic importance is discussed. Seeds were generally brown in color and cylindric‐ellipsoid to prolonged cylindric in shape. Seed size displayed wide variation, ranging from 0.37–1.91 mm in length and 0.12–0.75 mm in width. Seed appendages were observed as a characteristic morphological feature. Seed surface ornamentation has high phenotypic plasticity, and four types (reticulate, foveolate, papillose, and ribbed) can be recognized. In general, seed color and shape have limited taxonomic significance. However, some other features represent informative characters that can be used efficiently in distinguishing the studied taxa at the section and/or species levels. The findings illustrate that considerable taxonomic knowledge can be obtained by investigating the seed features of Hypericum, and the use of Scanning Electron Microscopy can reveal inconspicuous morphological affinities among species and play a role in taxonomic and systematic studies of the genus Hypericum.Research Highlights Macro‐ and micro‐morphological features of seeds of 40 Hypericum taxa from China were examined using Light and Scanning Electron Microscopy, providing the first broad study regarding seed morphology for Hypericum from China. Details and variations of seed size, shape, color, surface ornamentation, and appendages are fully presented. Seed features and their variation have important taxonomic significance at the section and/or species levels within Hypericum.

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Paleobiology of the genus <i>Hypericum</i> (Hypericaceae): a survey of the fossil record and its palaeogeographic implications

Cited by 20 publications

References 34 publications

Reconstructing deep-time paleoclimate legacies unveil the demise and turnover of the ancient (boreo)tropical flora

Reconstructing deep-time paleoclimate legacies unveil the demise and turnover of the ancient (boreo)tropical flora

A new Hypericum (sect. Drosocarpium, Hypericaceae) from the Cyclades Islands (Greece)

Seed morphology of Hypericum (Hypericaceae) in China and its taxonomic significance

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