Evolutionary history of boreotropical lineages: Hypericum (Hypericaceae) and Euphorbia subgenus Esula (Euphorbiaceae)

Because of its unique climatic history, the northern hemisphere provides a natural laboratory to study the effects of climate cooling on biodiversity on a continental scale. In the early Cenozoic era, the global temperature was high, allowing paratropical conditions at high latitudes. During this period, the boreotropical forest covered the Holarctic region. The climatic cooling that took place 35 million years ago promoted the disappearance and replacement of this ancient "boreotropical" biome by different types of temperate and seasonal vegetation. In this seminar we will explore the evolutionary and biogeographic history of two plant lineages with boreotropical ancestors, the genus Hypericum L. and Euphorbia subgenus Esula Pers., two of the most species-rich groups of angiosperms.

This seminar is framed within the activites of the RCCHU Study Group 'Botanical Collections and Herbaria: New Insights and Challenges'

                                                    You can follow this seminar here

Speaker: Irene Masa-Iranzo (Real Jardín Botánico de Madrid, CSIC; Universidad Autónoma of Madrid, UAM;  Madrid, Spain)

Sponsors: Real Jardín Botánico de Madrid (RJB-CSIC); Universidad Autónoma of Madrid (UAM); RCCHU