In article , Beverly
Erlebacher writes
And a family
as apparently innocuous as the Umbelliferae (or whatever it is these days)
full of tasty veggies and herbs like celery, dill, parsley, carrots, fennel,
etc, includes poison hemlock of which a really small amount can kill an
adult. And while many seeds of this family are used as flavourings (dill,
caraway, anise, cumin, cariander and many more), carrot seeds can cause
miscarriage.

I never thought of Umbelliferae as innocuous; at a guess it contains 2
of the 3 most toxic plants in the British flora (hemlock and water
dropwort; the 3rd would be deadly nightshade).
--
Stewart Robert Hinsley