Verbatim text: Watson, L. E. and J. R. Estes. 1990. Biosystematic and phenetic analysis of Marshallia (Asteraceae). Syst. Bot. 15: 403–414.
Author: Watson, L.E., Estes, J.R.
Year: 1990
Title: Biosystematic and phenetic analysis of Marshallia (Asteraceae)
Journal: Syst. Bot
Volume: 15
Pages: 403–414