Verbatim text: Schilling, E. E., C. R. Lander, R. D. Noyes, and L. H. Rieseberg. 1998. Phylogenetic relationships in Helianthus (Asteraceae) based on nuclear ribosomal DNA internal transcribed spacer region sequence data. Syst. Bot. 23: 177–187.
Author: Schilling, E.E., Lander, C.R., Noyes, R.D., Rieseberg, L.H.
Year: 1998
Title: Phylogenetic relationships in Helianthus (Asteraceae) based on nuclear ribosomal DNA internal transcribed spacer region sequence data
Journal: Syst. Bot
Volume: 23
Pages: 177–187