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Seed size

I have been investigating issues of ovule and seed development recently. One question that has come up is: How much variation is there in seed size? I had analysed some seed set data for some earlier work with some image analysis software. Consequently I have a large data set of seed area and perimeter for Chamerion angustifolium. A rough look at the data is:

seedSize

The data set is available as seedSizeData.txt.zip. Bewarned, the file contains over 100,000 lines — be sure to use an efficient text editor or stats package. All dimensions are in cm. The seed? column contains a 1 for seeds and 2 for objects smaller than seeds. See this for details.