Verbatim text: Tomlinson, P. B. 1982. Helobiae (Alismatidae). In: C. R. Metcalfe, ed. 1960+. Anatomy of the Monocotyledons. 8+ vols. Oxford. Vol. 7.
Author: Tomlinson, P.B.
Year: 1982
Title: Helobiae (Alismatidae)
Editor: Metcalfe, C.R.
Book year: 1960
Book title: Anatomy of the Monocotyledons
Book volume: 8+ vols
Volume: 7