]> Botany [collector note: Kansas: GH] Lathrop, Earl W. & McGregor, Ronald Leighton Lathrop, Earl W. & McGregor, Ronald Leighton E. W. Lathrop & R. L. McGregor Lathrop, E. W. & McGregor, R. L. Earl W. Lathrop & Ronald Leighton McGregor