Data on Poulsenia armata seed quality data at Los Tuxtlas forest, Mexico. Seeds were collected in 2012 and sent to the University of Illinois at Chicago to determine the carbon and nitrogen stable isotope ratios (13C12C and 15N14N, respectively), carbon and nitrogen concentrations (% dry mass) and carbon-to-nitrogen ratios. Data also includes seed dry mass, amount of nitrogen per seed and seed relative water conten
