tomatoeggplantdeadly nightshade/belladonna
The Solanum genus contains the eggplant, tomato and potato along with others such as woody nightshade.
Petunia is related to potato, tomato, and nightshade.
Solanum tuberosum. They are a member of the nightshade family (Solanaceae).
nightshade
Solanaceae is a family of flowering plants that includes a number of important agricultural crops. The name of the family comes from the Latin Solanum "the nightshade plant. The family is also informally known as the nightshade or potato family. See wiki for more information.
The potato is a member of the deadly nightshade family, and eating uncooked potatoes can be toxic, especially if one has an allergy to nightshades.
No. I have a nightshade allergy and spinach does not make me sick; I have another friend with a similar allergy who can also eat spinach. Most lists of nightshades I have found online do not contain spinach; https://secure.wikimedia.org/wikipedia/en/wiki/Spinach does not list Solanaceae.
No. Zucchini is part of the squash family.
Black Nightshade
I have been told that the greens of potato palnts are poisonous to horses. I am researching this now and will report back. Yes the green parts of the potato plant are poisonous. The potato is a member of the nightshade family. They contain solanin which is a nerve toxin that is very toxic even in small amounts.
The books in the Nightshade series by Andrea Cremer are: "Nightshade," "Wolfsbane," "Bloodrose," and "Rift."