The desert thorn-apple or small datura (Datura discolor) is an annual herb native to Western North America. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants Adiantum pedatum (a fern... Classes Magnoliopsida- Dicots Liliopsida- Monocots The flowering plants (also called angiosperms) are a major group of land plants. ... Orders see text Dicotyledons or dicots are flowering plants whose seed contains two embryonic leaves or cotyledons. ... Families at least the following: Solanaceae Convolvulaceae and others, varying between classification systems; for details see text The Solanales are an order of flowering plants, included in the asterid group of dicotyledons. ... Genera Acnistus Atropa (deadly nightshade) Brugmansia (angels trumpet) Calibrachoa Capsicum (chile peppers) Cestrum Chamaesaracha Combera Crenidium Cuatresia Cyphanthera Cyphomandra Datura (jimsonweed) Hyoscyamus (henbane) Iochroma Lycium (boxthorn) Lycopersicon (tomato) Mandragora (mandrake) Nicandra Nicotiana (tobacco) Petunia Physalis (tomatillo) Solandra Solanum (potato, eggplant) Streptosolen For more genera see Solanaceae in The Families... Species See text Datura is a genus of 12-15 species of flowering plants belonging to the family Solanaceae. ... In biology, binomial nomenclature is the formal method of naming species. ... A herb (pronounced hurb in Commonwealth English and urb in American English) is a plant grown for culinary, medicinal, or in some cases even spiritual value. ... World map showing North America A satellite composite image of North America. ...