plant order

/plænt ˌɔrdər/

Other forms: plant orders

Definitions of plant order

1. noun

   the order of plants
   types:

   Anthocerotales, order Anthocerotales

   hornworts; liverworts having a thalloid gametophyte; in some classification systems included in the class Hepaticopsida

   Andreaeales, order Andreaeales

   comprises a single genus: Andreaea

   Bryales, order Bryales

   category used in some classification systems for mosses having the spore case separated from the capsule wall by a hollow intercellular space

   Dicranales, order Dicranales

   widely distributed order of mosses with erect gametophores and sporophytes at the tips of stems

   Eubryales, order Eubryales

   mosses with perennial erect gametophores and stems with rows of leaves and drooping capsules

   Sphagnales, order Sphagnales

   coextensive with the genus Sphagnum; in some classifications isolated in a separate subclass

   Jungermanniales, order Jungermanniales

   large order of chiefly tropical liverworts

   Marchantiales, order Marchantiales

   liverworts with gametophyte differentiated internally

   Sphaerocarpales, order Sphaerocarpales

   small order sometimes included in the order Jungermanniales

   Gnetales, order Gnetales

   chiefly tropical or xerophytic woody plants; practically unknown as fossils but considered close to the ancestral line of angiosperms

   Cycadales, order Cycadales

   primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms

   Bennettitales, order Bennettitales

   fossil gymnospermous plants of the Carboniferous

   Cycadofilicales, Lyginopteridales, order Cycadofilicales, order Lyginopteridales

   fossil gymnospermous trees or climbing plants from the Devonian: seed ferns

   Cordaitales, order Cordaitales

   extinct plants having tall arborescent trunks comparable to or more advanced than cycads; known from the Pennsylvanian period; probably extinct since the Mesozoic era

   Coniferales, order Coniferales

   profusely branching and chiefly evergreen trees and some shrubs having narrow or needlelike leaves

   Taxales, order Taxales

   coextensive with the family Taxaceae: yews

   Ginkgoales, order Ginkgoales

   coextensive with the family Ginkgoaceae: plants that first appeared in the Permian and now represented by a single surviving species; often included in Coniferales

   Ranales, Ranunculales, order Ranales, order Ranunculales

   herbs, shrubs and trees: includes families Ranunculaceae; Annonaceae; Berberidaceae; Magnoliaceae; Menispermaceae; Myristicaceae; Nymphaeaceae; Lardizabalaceae; Lauraceae; Calycanthaceae; Ceratophyllaceae; Cercidiphyllaceae

   Myricales, order Myricales

   coextensive with the family Myricaceae

   Arales, order Arales

   Araceae; Lemnaceae

   Aristolochiales, order Aristolochiales

   order of plants distinguished by tubular petaloid perianth and inferior ovary

   Caryophyllales, Chenopodiales, order Caryophyllales, order-Chenopodiales

   corresponds approximately to the older group Centrospermae

   Opuntiales, order Opuntiales

   coextensive with the family Cactaceae: cactuses

   Papaverales, Rhoeadales, order Papaverales, order Rhoeadales

   an order of dicotyledonous plants

   Campanulales, order Campanulales

   an order of plants of the subclass Asteridae including: Campanulaceae; Lobeliaceae; Cucurbitaceae; Goodeniaceae; Compositae

   Orchidales, order Orchidales

   order of plants with irregular flowers having minute seeds: Orchidaceae; Burmanniaceae

   Primulales, order Primulales

   Primulaceae; Theophrastaceae; Myrsinaceae; and (in some classifications) Plumbaginaceae

   Plumbaginales, order Plumbaginales

   coextensive with the family Plumbaginaceae; usually included in order Primulales

   Graminales, order Graminales

   grasses; sedges; rushes

   Pandanales, order Pandanales

   families Typhaceae; Sparganiaceae; Pandanaceae

   Malvales, order Malvales

   Malvaceae; Bombacaceae; Elaeocarpaceae; Sterculiaceae; Tiliaceae

   Umbellales, order Umbellales

   plants having umbels or corymbs of uniovulate flowers; includes the Umbelliferae (chiefly herbs) and Cornaceae (chiefly trees or shrubs)

   Proteales, order Proteales

   coextensive with the family Proteaceae

   Casuarinales, order Casuarinales

   order of chiefly Australian trees and shrubs comprising the casuarinas; 1 family: Casuarinaceae

   Ericales, order Ericales

   Ericaceae; Clethraceae; Diapensiaceae; Epacridaceae; Lennoaceae; Pyrolaceae; Monotropaceae

   Diapensiales, order Diapensiales

   used in some classifications: coextensive with family Diapensiaceae

   Fagales, order Fagales

   an order of dicotyledonous trees of the subclass Hamamelidae

   Gentianales, order Gentianales

   an order of dicotyledonous plants having gamopetalous flowers; Gentianaceae; Apocynaceae; Asclepiadaceae; Loganiaceae; Oleaceae; Salvadoraceae

   Oleales, order Oleales

   coextensive with the family Oleaceae; in some classifications included in the order Gentianales

   Juglandales, order Juglandales

   coextensive with the family Juglandaceae

   Myrtales, Thymelaeales, order Myrtales, order Thymelaeales

   Myrtaceae; Combretaceae; Elaeagnaceae; Haloragidaceae; Melastomaceae; Lecythidaceae; Lythraceae; Rhizophoraceae; Onagraceae; Lecythidaceae; Punicaceae

   Musales, order Musales

   tropical plants

   Hypericales, Parietales, order Hypericales, order Parietales

   a large order of dicotyledonous plants of subclass Dilleniidae

   Guttiferales, order Guttiferales

   used in some classifications; coextensive with Parietales

   Urticales, order Urticales

   an order of dicotyledonous plants including Moraceae and Urticaceae and Ulmaceae

   Liliales, order Liliales

   an order of monocotyledonous plants including Amaryllidaceae and Liliaceae and Iridaceae

   Palmales, order Palmales

   coextensive with the family Palmae: palms

   Plantaginales, order Plantaginales

   coextensive with the family Plantaginaceae

   Polygonales, order Polygonales

   coextensive with the family Polygonaceae,

   Commelinales, Xyridales, order Commelinales, order Xyridales

   an order of monocotyledonous herbs

   Alismales, Naiadales, order Alismales, order Naiadales

   an order of aquatic monocotyledonous herbaceous plants

   Rosales, order Rosales

   in some classifications this category does not include Leguminosae

   Rubiales, order Rubiales

   an order of dicotyledonous plants of the subclass Asteridae; have opposite leaves and an inferior compound ovary

   Geraniales, order Geraniales

   an order of plants of subclass Rosidae including geraniums and many other plants; see Euphorbiaceae; Geraniaceae; Rutaceae; Malpighiaceae; Simaroubaceae; Meliaceae; Zygophyllaceae; Tropaeolaceae

   Salicales, order Salicales

   coextensive with the family Salicaceae

   Santalales, order Santalales

   order of plants distinguished by having a one-celled inferior ovary; many are parasitic or partly parasitic usually on roots

   Sapindales, order Sapindales

   an order of dicotyledonous plants

   Ebenales, order Ebenales

   trees or shrubs of the families Ebenaceae or Sapotaceae or Styracaceae or Symplocaceae

   Sarraceniales, order Sarraceniales

   plants that are variously modified to serve as insect traps: families Sarraceniaceae; Nepenthaceae; Droseraceae

   Polemoniales, order Polemoniales

   Polemoniaceae; Solanaceae; Boraginaceae; Labiatae; Lentibulariaceae; Pedaliaceae; in some classifications includes the order Scrophulariales

   Scrophulariales, order Scrophulariales

   used in some classification systems; often included in the order Polemoniales

   Ophioglossales, order Ophioglossales

   coextensive with the family Ophioglossaceae

   Rhamnales, order Rhamnales

   an order of dicotyledonous plants

   Piperales, order Piperales

   Piperaceae; Saururaceae; Chloranthaceae

   Filicales, Polypodiales, order Filicales, order Polypodiales

   true (leptosporangiate) ferns

   Marattiales, order Marattiales

   lower ferns coextensive with the family Marattiaceae

   Psilotales, order Psilotales

   lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots

   Psilophytales, order Psilophytales

   Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants

   Equisetales, order Equisetales

   lower tracheophytes in existence since the Devonian

   Lepidodendrales, order Lepidodendrales

   fossil arborescent plants arising during the early Devonian and conspicuous throughout the Carboniferous

   Lycopodiales, order Lycopodiales

   lower vascular plants coextensive with the family Lycopodiaceae; in some classifications includes the Selaginellaceae and Isoetaceae

   Selaginellales, order Selaginellales

   in some classifications included in Lycopodiales

   Isoetales, order Isoetales

   aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales

   Ericaceae, family Ericaceae, heath family

   heathers

   type of:

   order

   (biology) taxonomic group containing one or more families