Wood Anatomical Variation in Two Cordia Species (Cordiaceae) - Dataset

Dataset description This dataset contains secondary xylem anatomical measurements of Cordia oncocalyx and Cordia bicolor collected in contrasting hydric environments in the Caatinga biome, Brazil (2019–2020). Samples were collected at breast height (1.30 m) from five individuals per species. Wood blocks containing bark, cambium, and xylem were sectioned, stained, and analyzed under light microscopy. Measurements follow standard wood anatomical procedures. FILES Cordia_vessel_diameter_raw.csvRaw vessel diameter measurements used for hydraulic trait calculations. Variables: sp – species (co = Cordia oncocalyx; cb = Cordia bicolor) indiv – sampled individual D – vessel diameter (µm) Dh – hydraulic diameter (µm) Diam – tree diameter (cm) alt – tree height (m) prec – mean annual precipitation (mm) temp – mean annual temperature (°C) Cordia_anatomical_traits_mean.csvMean anatomical trait values per individual. Variables: sp – species (co = Cordia oncocalyx; cb = Cordia bicolor) indiv – sampled individual D – mean vessel diameter (µm) Dh – mean hydraulic diameter (µm) Vg – vessel grouping index Vs – vessel solitary index Lvw – intervessel wall leght (µm) Fp – Parenchyma fraction Fap – axial parenchyma fraction Ffw – fiber wall fraction Ffl – fiber lumen fraction Fvl – vessel lumen fraction Fvw – vessel wall fraction Fpr – Ray parenchyma fraction Vd – vessel density (mm²) Vi – vulnerability index Mi – mesomorphy index