Poisonous Plants

Some plants are listed as poisonous (and they are) but only if eaten in large quantities while other plants have toxic parts only if eaten by humans and are therefore listed as poisonous. But the likelihood of someone eating a part of these plants is very slim indeed.Who of us is likely to eat the tuber of a Cyclamen? It is highly poisonous and fortunately tastes acrid and bitter so we are more likely to spit it out than eat it.