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. 2008 Apr 11;4(3):302–306. doi: 10.1098/rsbl.2008.0094

Figure 1.

Figure 1

Scaling of hydraulically weighted vessel diameter (dh) with vascular bundle diameter (D) within 10 species of oak; standard major axes were fitted to the data. Vessels were sampled from the following: open circles, primary vein; triangles, secondary vein; and filled circles, petiole. (a) Quercus castaneifolia: dh=0.67D0.55 and r=0.87, p<0.001; (b) Q. cerris: dh=0.52D0.59 and r=0.93, p<0.001; (c) Q. georgiana: dh=0.53D0.58 and r=0.68, p<0.001; (d) Q. ilex: dh=0.18D0.72 and r=0.85, p<0.001; (e) Q. nigra: dh=1.07D0.48 and r=0.78, p<0.001; (f) Q. petraea: dh=1.61D0.42 and r=0.61, p<0.001; (g) Q. rhysophylla: dh=0.95D0.47 and r=0.67, p<0.001; (h) Q. robur: dh=1.02D0.47 and r=0.58, p=0.001; (i) Q. rubra: dh=1.05D0.51 and r=0.81, p<0.001; and (j) Q. serrata: dh=0.52D0.60 and r=0.98, p<0.001.