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.
Many poisonous plants do not cause permanent damage, but may induce short-term vomiting or diarrhea until the toxin is out of the catâs system. Begonia (Begonia spp.), eucalyptus (Eucalyptus spp.) and chrysanthemum (Chrysanthemum spp.) plants can all cause gastrointestinal upset and excessive salivation.vening primrose (Primula vulgaris) may cause mild vomiting. In addition, pregnant cats should not be exposed to barberry (Berberis vulgaris), goldenseal (Hydrastis canadensis), black cohosh (Cimicifuga racemosa) or blue cohosh (Caulophyllum thalictroides).