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Abstract Detail

Paleobotanical Section

Green, Walton [1], Little, Stefan [2].

Leaf Rank: a blinded test of dicot leaf scoring for vein network organization.

Leaf rank is a scoring method for assessing the degree of organization in the vein network of a dicot leaf. Aspects of vein networks have been associated with leaf hydraulics, structural integrity, and macroevolution, as well as used as taxonomically informative characters and biostratigraphic markers. The difficulty of obtaining high-quality images and the high Shannon information content of a dicot vein network continues to make full quantitative description of dicot venation networks difficult. Here we show how semi-quantitative scoring criteria allow us to capture reliable, consistent information about a leaf vein network quickly. In addition, we quantify the subjective error associated with the scoring, and document both a systematic and an ecological signal in leaf rank data obtained from herbarium collections.

Broader Impacts:

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1 - Harvard University, Organismic and Evolutionary Biology, Botanical Museum, 26 Oxford St., Cambridge, MA, 02138, USA
2 - University Of California, Davis, Mail Stop 1, One Shields Avenue, Davis, CA, 95616, USA

leaf venation
leaf rank
dicot leaf morphology.

Presentation Type: Oral Paper:Papers for Sections
Session: 19
Location: Union A/Hyatt
Date: Monday, July 9th, 2012
Time: 4:15 PM
Number: 19003
Abstract ID:847

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