Hydatellaceae identified as a new branch near the base of the angiosperm phylogenetic tree

Jeffery M. Saarela, Hardeep S. Rai, James A. Doyle, Peter K. Endress, Sarah Mathews, Adam D. Marchant, Barbara G. Briggs and Sean W. Graham ()
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Jeffery M. Saarela: UBC Botanical Garden and Centre for Plant Research (Faculty of Land and Food Systems), Centre for Biodiversity Research, 2357 Main Mall, The University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
Hardeep S. Rai: UBC Botanical Garden and Centre for Plant Research (Faculty of Land and Food Systems), Centre for Biodiversity Research, 2357 Main Mall, The University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
James A. Doyle: Section of Evolution and Ecology, University of California, Davis, California 95616, USA
Peter K. Endress: Institute of Systematic Botany, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland
Sarah Mathews: The Arnold Arboretum, 22 Divinity Avenue, Harvard University, Cambridge, Massachusetts 02138, USA
Adam D. Marchant: Royal Botanic Gardens, Mrs Macquaries Road, Sydney, New South Wales 2000, Australia
Barbara G. Briggs: Royal Botanic Gardens, Mrs Macquaries Road, Sydney, New South Wales 2000, Australia
Sean W. Graham: UBC Botanical Garden and Centre for Plant Research (Faculty of Land and Food Systems), Centre for Biodiversity Research, 2357 Main Mall, The University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada

Nature, 2007, vol. 446, issue 7133, 312-315

Abstract: Consider the water lilies The Hydatellaceae are small aquatic plants living modest lives away from the limelight, and conventionally assumed to be monocotyledonous flowering plants related to grasses. Now they have been subjected to the latest molecular techniques, and they turn out to be close relatives of basal angiosperms such as water lilies, increasing their importance immensely. They belong to a previously unrecognized lineage branching near the root of the angiosperms — a radical addition to the three deepest branches discovered in 1999 that rekindled interest amongst molecular biologists in the origin of angiosperms, what Darwin called an “abominable mystery”.

Date: 2007
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DOI: 10.1038/nature05612

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