Some of the most beloved British summer wildflowers are in fact, the most endangered, according to the botanical charity Plantlife International.
Few corncockles are now seen in the wild
Researchers say arable plants, a group which includes poppies and buttercups, have shown the greatest decline of any type of British flora.
The group is urging farmers to count the arable plants on their land to create an accurate national survey.
BBC environment correspondent Sarah Mukherjee says scientists are worried that many of these plants - once considered weeds - have declined to the point of extinction.
"With names like weasel's snout, dwarf spurge and broad fruited cornsalad, some arable plants sound as if their proper place is in a Shakespearian witches' cauldron," she said.
"They find it almost impossible to survive in intensively cultivated farmland, and are susceptible to many herbicides.
EMBLEMS OF A LOST ENGLAND
Modern industrial farming techniques have now pushed many arable "weeds" close to extinction.
"But if farmers are prepared to allow field edges to grow wild and leave some corners uncultivated, they will grow back."
Researchers at Plantlife International say deep ploughing can bring back long-buried seeds - encouraging the return of butterflies, bees and a host of other wildlife will follow.