[Wikipedia] Toxicity: Toxicoscordion venenosum has a well deserved poisonous reputation.[20] The main toxic alkaloid contained in the plants is zygacine, but other esters of zygadenine develop in the plant as the seed pods ripen.[30] While they are not easily confused with other species while in bloom they can easily be mistaken for edible bulbs like those of the camas lily in the Pacific Northwest once the leaves and flowering stems have faded.[20] As few as two bulbs are sufficient to kill a fully-grown human, with the poisons not degraded by cooking.[25] The toxins also remain stable when dried and stored, with bulbs remaining toxic for two decades after collection.[31] The seeds and the bulbs are the most toxic parts of the plants. (link added by Mary Ann Machi)