If p > 0, the parabola opens to the right and if p < 0 the parabola opens to the left. The equations we have just established are known as the standard equations of a parabola. A standard equation always implies the vertex is at the origin and the focus is on one of the axes.
Euphorbias are on all the toxic plant lists and everyone is familiar with the hazards of Poinsettias.here is some discussion of severe toxic principles of Tylecodons I did not understand as these are in no way related to Euphorbias or in the Euphorbia family. Though the article is fairly long, it is filled with very few facts and is primarily anecdotal.
For the family commonly called euphorbias, see Euphorbiaceae. Euphorbia (spurge) is a very large and diverse genus of flowering plants in the spurge family (Euphorbiaceae).Sometimes in ordinary English, euphorbia is used to refer to the entire Euphorbiaceae family (as the type genus), not just to members of the genus.Some euphorbias are well known and widely commercially available, such as Poinsettias at Christmas.everal Euphorbia species are used as food plants by the larvae of some Lepidoptera (butterflies and moths), like the Spurge Hawk-moths (Hyles euphorbiae and Hyles tithymali), as well as the Giant Leopard Moth.