Verbatim text: Clausen, J. 1933. Cytological evidence for the hybrid origin of Penstemon neotericus Keck. Hereditas (Lund) 18: 65–76.
Author: Clausen, J.
Year: 1933
Title: Cytological evidence for the hybrid origin of Penstemon neotericus Keck
Journal: Hereditas (Lund)
Volume: 18
Pages: 65–76