Allometric data for petioles from 43 angiosperm species

935 leaves from 43 species for a mean of ~22 individuals per species, were collected during the summer of 2007 within the greater Atlanta region (Lat/Long 33 75 – 84 38). Data were collected initially as part of a study on leaf allometry (Price et al., 2009), but only petiole diameters were used; petiole length, surface area and volume were not reported nor interpreted. Species were chosen based on local availability. For each fresh leaf, petiole length was measured with a ruler, and petiole diameter was measure twice at the base with digital calipers. For each species, as large a range of leaf and petiole sizes as could be found was collected, with representative sampling across the size range. Each petiole was assumed to have a cylindrical shape, and surface area and volume were estimated from the length and diameter measures using standard geometric formulas.