Process & Plant Automation Ltd (@ppaghltd) Mentions Facebook Rare and Endangered Plants Presidio of San Francisco (U.S. National Park Service) Framed Print of Strychnine tree or poison nut, Strychnos nux vomica Print. Framed Print from Mary Evans Boeing says new $240 million Chinook helicopter contract will help keep Delco plant working until at least 2030 How to Identify & Treat Powdery Mildew Lonely Pines Farm The prickly water lily (Euryale ferox) produces seeds called makhana (fox nuts), which are harvested from its spiny aquatic plant and widely enjoyed as a nutritious, protein rich snack.