Ricinus communis, the castor bean or castor oil plant, is a species of perennial flowering plant in the spurge family, Euphorbiaceae. It is the sole species in the monotypic genus, Ricinus, and subtribe, Ricininae. The evolution of castor and its relation to other species are currently being studied using modern genetic tools.
For many, Atropa belladonna, deadly nightshade is the star of the poison plants. Most people have heard of deadly nightshade even if they have never seen it. The combination of its ability to kill with its use to beautify is hard to beat.
Oleander (Nerium oleander) is a hardy, easy-to-grow flowering plant, mainly found in the lower half of the US. Apart from making an appearance in gardens from coast to coast, in many states — including California — it’s commonly seen alongside freeways and on medians. But just because it’s all over the place doesn’t mean it’s always a G-rated plant.
Abrus precatorius, known commonly as jequirity, Crab's eye, or crab's eye creeper, cock's eyes, rosary pea, paternoster pea, love pea, precatory pea or bean, prayer bead, John Crow Bead, coral bead, red-bead vine, country licorice, Indian licorice, wild licorice, Jamaica wild licorice, Akar Saga, coondrimany, gidee gidee, Jumbie bead ratti/rettee/retty, or weather plant, is a slender, perennial climber that twines around trees, shrubs, and hedges.
Water hemlock (Cicuta spp.) is one of the most deadly poisonous plants in North America. When you begin learning about wild plants, a great place to start is with the most dangerous species found in your area. This way you can be sure to avoid these poisonous plants when out in the field learning about other species.