Fig. 2. Biomass allocation (%) among plant component parts (needles, leaves, branches, stems, total aboveground, coarse roots, fine roots, total roots, total plant as applicable for each species), with associated mean separation statistics, for longleaf pine (A), sand post oak (B), wiregrass (C), butterfly weed (D), and rattlebox (E) when grown together for 3 yr under ambient (365 µmol mol^–1) and elevated (720 µmol mol^–1) concentrations of atmospheric CO₂.