A trait dataset for freshwater mussels of the United States of America. - Hopper GW; Bucholz JR; DuBose TP; Fogelman KJ; Keogh SM; Kubala ME; Lodato MB; Nichols DH; Sánchez González I; Pfeiffer JM; Stoeckel JA; Lozier JD; et al. (Scientific data, 2023)