Leaf architecture and ecophysiology of an early basal eudicot from the Early Cretaceous of Spain

Barral, Abel, Gomez, Bernard, Feild, Taylor S., Coiffard, Clément, and Daviero-Gomez, Véronique (2013) Leaf architecture and ecophysiology of an early basal eudicot from the Early Cretaceous of Spain. Botanical Journal of the Linnean Society, 173 (4). pp. 594-605.

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Abstract

Iterophyllum lobatum gen. et sp. nov. is reported from the late Barremian lithographic limestones of Las Hoyas, Spain. It consists of a simple, petiolate leaf, with a pinnately lobed lamina. The dentate thickened margin bears chloranthoid-like glands at lobe apices and sinuses. The venation is pinnate and craspedodromous, with three discernible vein orders. Based on the low regularity of vein course and angles and the low leaf rank, such a venation pattern may represent an early evolved leaf archetype in early basal eudicots. An acropetal leaf development mode in I. lobatum is similar to that in several living Papaveraceae. The leaf architecture and ecophysiology, particularly the vein widths and the glands, indicate that I. lobatum leaves were aerial. The plant grew close to water in the wetland terrestrial ecosystem of Las Hoyas. Iterophyllum lobatum might have been an opportunist species in early ecological succession stages after wildfires.

Item ID: 30636
Item Type: Article (Research - C1)
ISSN: 1095-8339
Keywords: leaf development, leaf morphology, palaeobotany, palaeoecology, palaeophysiology
Funders: French Centre National de la Recherche Scientifique, Ministerio de Ciencia e Innovación, Spain (MCI) , Catalan Government
Projects and Grants: MCI GL2009-11838/BTE, MCI GL2011-27869, MCI GL2011-23948, MCI GL2012-35199, Catalan Government SGR2009-1451
Date Deposited: 18 Dec 2013 05:26
FoR Codes: 06 BIOLOGICAL SCIENCES > 0607 Plant Biology > 060705 Plant Physiology @ 50%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060310 Plant Systematics and Taxonomy @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
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