3 Works

Data from: Multiple colonizations, hybridization and uneven diversification in Cyrtandra (Gesneriaceae) lineages on Hawai‘i Island

Melissa A. Johnson, Yohan Pillon, Tomoko Sakishima, Donald K. Price & Elizabeth A. Stacy
Aim The diversity and composition of species pools within oceanic archipelagos is determined by a combination of colonization, abiotic tolerance, in situ diversification, biotic interactions, and extinction. The signature of biogeographic events and evolutionary processes, however, may be masked by recent coalescence and hybridization between closely related species. We used the species-rich plant genus Cyrtandra (Gesneriaceae) to investigate the roles of colonization and hybridization in shaping community assemblages on the geologically young Hawaii Island. Location...

Cohen and Schenk (2021) Data from: Investigating phylogenetic placement and species-level relationships in a recent radiation of Mentzelia section Bartonia (Loasaceae) from the Mojave Desert

Dylan Cohen & John Schenk
Understanding species level relationships is a central goal in systematic botany; however complexes of closely related and morphologically similar species often pose considerable challenges to that goal. The North American west is home to many notable genera that notoriously have difficult species complexes (e.g., Astragalus, Eriogonum, Penstemon). Mentzelia section Bartonia (Loasaceae) is a recently evolved and diverse clade that occurs across the North American west. Phylogenetic studies have resolved many relationships, but the relationships within...

Data from: Anatomical enablers and the evolution of C4 photosynthesis in grasses

Pascal-Antoine Christin, Colin P. Osborne, David S. Chatelet, J. Travis Columbus, Guillaume Besnard, Trevor R. Hodkinson, Laura M. Garrison, Maria S. Vorontsova & Erika J. Edwards
C4 photosynthesis is a series of anatomical and biochemical modifications to the typical C3 pathway that increases the productivity of plants in warm, sunny, and dry conditions. Despite its complexity, it evolved more than 62 times independently in flowering plants. However, C4 origins are absent from most plant lineages and clustered in others, suggesting that some characteristics increase C4 evolvability in certain phylogenetic groups. The C4 trait has evolved 22–24 times in grasses, and all...

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Affiliations

  • Claremont Graduate University
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  • Royal Botanic Gardens
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  • University of Hawaii at Hilo
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  • Trinity College Dublin
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  • Paul Sabatier University
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  • University of Sheffield
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