Verbatim text: Hardin, J. W. 1990. Variation patterns and recognition of varieties of Tilia americana s.l. Syst. Bot. 15: 33–48.
Author: Hardin, J.W.
Year: 1990
Title: Variation patterns and recognition of varieties of Tilia americana s.l.
Journal: Syst. Bot
Volume: 15
Pages: 33–48