Caption: Pontederia cordata . A , habit; B , early inflorescence partly within bract; C , mature inflorescence extended beyond bract; D , short-styled flower, lateral view; E , short-styled flower with perianth opened outwards; F , pistil of short-styled flower; G , stigma; H , ovary with pendulous ovule; I-K , anthers; I , ventral view; J , dorsal view; K , lateral views; L , hairs, long and septate from perianth, short and glandular from filament; M , perianth with apical portion revolute after anthesis; N , immature fruit enveloped by tuberculate-ridged perianth base; O , T.S. of N (A-O , H.Aston 2376, MEL).Illustrators: A.Barley (nee Podwyszynski).
Flora of Australia Volume 45 figure 31.