Malcomber, S.T.;Davis*, A.P.
(2005).Six new Gaertnera (Rubiaceae) species from Madagascar and phylogenetic analyses that support Hymenocnemis as a synonym of Gaertnera.
Keating, R.C.;Hollowell, V.C.;Croat, T.
Festschrift for William G. DArcy: The Legacy of a Taxonomist..
Monograph in Systematics Botany
Selected CVs of Kew Staff