View photos of the medicinal plant, Nicotiana attenuata (Coyote tobacco), profiled in Medicinal Plants of the American Southwest.
All tobacco species are poisonous internally. Limited external use is relatively safe.
View photos of the poisonous plant, Solanum xanti (Purple nightshade).
Like other Solanum species, the foliage contains solanine and related alkaloids (poisonous). The fruit (green-yellow) also likely harbor this alkaloid group.
View photos of the edible plant, Solanum americanum (Black nightshade), profiled in the Wild Edible Series: California: Vol 1.
The mature black fruit are edible. All other parts contain varying amounts of solanine.
