Here are just a few. Monkshood (Aconitum napellus), also known as the “devil’s helmet,” is much-loved for its tall, flowering spikes that bloom in summer. But all parts of the monkshood are ...

Caption Flowers of monkshood, Aconitum napellus, extend laterally from a main stem and open successively toward the apex.This arrangement is one of only three basic flowering structures observed ...

Monkshood (Aconitum) is a statuesque beauty in the late summer garden and is very long-lived. All parts of this plant are poisonous. Don’t plant monkshood if you have dogs or children ...

Monkshood or aconite photographed at Ecrins National Park in France. Diners who fell ill after eating at a restaurant outside Toronto probably ate food contaminated with toxic aconite, Canada ...