White water arum (marsh bastard arum; dragon lily); Calla palustris; White flower shown cut above two large; flat; heart-shaped; dark-green leaves. Illustration by Henrietta Moriarty from 鈥楩ifty Plates of Greenhouse Plants' (1807); a re-issue of her own 鈥榁iridarium' (1806); with handcoloured copperplate engravings. Moriarty was a colonel's widow who turned to writing novels and illustrating botanical books to support her four children.