]> Botany Example of Name Published: Erythronium umbilicatum C. R. Parks & Hardin, Brittonia 15: 252. 1963 Parks, Clifford R. & Hardin, James Walker Parks, Clifford R. & Hardin, James Walker C. R. Parks & J. W. Hardin C.R.Parks & Hardin C. R. Parks & Hardin Clifford R. Parks & James Walker Hardin