Caption: A-D , Philydrella . A-B , P. pygmaea , A , flower, side view; B , stamen and inner tepals (A-B , A.George 16324, CANB). C-D , P. drummondii . C , flower; D , stamen and inner tepals (C-D , Bayswater, A.Morrison, CANB; holo). E-F , Philydrum lanuginosum . E , flower, side view with proximal tepal removed; F , stamen and inner tepals (E-F , L.Brass 384, CANB). G-K , Helmholtzia . G-I , H. glaberrima . G , flower, side view; H , stamen; I , inner tepals (G-I , E.Constable 6544, NSW). J-K , H. acorifolia . J , flower, side view; K , stamen and inner tepals (J-K , S.Blake 19727, CANB).Illustrators: D.Fortescue.
Flora of Australia Volume 45 figure 29.