The palaeodicotyledons ("ancient dicots") comprise the basal dicots, i.e. those flowering plants that do not belong to either the monocots or the eudicots. In some newer classifications, the eudicots are treated as a separate class Rosopsida, in which case the palaeodicots are grouped as a paraphyletic class Magnoliopsida or further divided into several classes. 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) Hepatophyta - liverworts Anthocerophyta - 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 angiosperms or Magnoliophyta) are one of the major groups of modern plants, comprising those that produce seeds in specialized reproductive organs called flowers, where the ovulary or carpel is enclosed. ... Binomial name Amborella trichopoda Amborella trichopoda is a rare shrub found only in New Caledonia. ... Families Cabombaceae - fanworts Nymphaeaceae - water lilies The Nymphaeales are an order of flowering plants, including two families of aquatic herbs: Family Nymphaeaceae (waterlily family) Family Cabombaceae (fanwort family) Sometimes the Cabombaceae are included within the Nymphaeaceae. ... Families See text The Austrobaileyales are an order of basal flowering plants comprising the following families: Family Austrobaileyaceae Family Trimeniaceae Family Illiciaceae (star anise) Family Schisandraceae (schisandra, kadsura) This essentially corresponds to the order Illiciales in the older Cronquist system, which only included the last two families. ... Families Annonaceae Degeneriaceae Eupomatiaceae Himantandraceae Magnoliaceae Myristicaceae The Magnoliales are an order of flowering plants. ... Families Atherospermataceae Calycanthaceae Gomortegaceae Hernandiaceae Lauraceae Monimiaceae Siparunaceae The Laurales are an order of flowering plants. ... Families Aristolochiaceae Hydnoraceae Lactoridaceae Piperaceae Saururaceae The Piperales are an order of flowering plants. ... Genera See text The Aristolochiaceae, or the Birthworth family, are a family of flowering plants with 7 genera and about 400 species belonging to the order Piperales. ... Families Canellaceae Winteraceae The Canellales are an order of basal dicot flowering plants, also referred to as the Winterales. ... Species Ceratophyllum demersum Ceratophyllum submersum Ceratophyllum is a cosmopolitan genus of flowering plants, commonly found in ponds, marshes, and quiet streams in tropical and in temperate regions. ... Orders see text Dicotyledons or dicots are flowering plants whose seed contains two embryonic leaves or cotyledons. ... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also angiosperms or Magnoliophyta) are one of the major groups of modern plants, comprising those that produce seeds in specialized reproductive organs called flowers, where the ovulary or carpel is enclosed. ... Orders Base Monocots: Acorus Alismatales Asparagales Dioscoreales Liliales Pandanales Family Petrosaviaceae Commelinids: Arecales Commelinales Poales Zingiberales Family Dasypogonaceae Monocotyledons or monocots form one of the two major groups of flowering plants. ... Orders Basal eudicots Ranunculales Buxales Trochodendrales Proteales Gunnerales Berberidopsidales Dilleniales Caryophyllales Saxifragales Santalales Vitales Basal rosids Crossosomatales Geraniales Myrtales Eurosids I Zygophyllales Celastrales Malpighiales Oxalidales Fabales Rosales Cucurbitales Fagales Eurosids II Brassicales Malvales Sapindales Basal asterids Cornales Ericales Euasterids I Garryales Solanales Gentianales Lamiales Unplaced: Boraginaceae Euasterids II Aquifoliales Apiales...

Based on recent DNA analyses, it appears that ancestors of the shrub Amborella trichopoda, the only species in order Amborellales, were the first to split off from the main Angiosperm line, followed by the Nymphaeales and Austrobaileyales. The next main split occurred when the ancestor of the Ceratophyllales and Eudicots diverged from the ancestor of the sister taxa Chloranthales, Magnoliids, and Monocots. The Magnoliid group is monophyletic, and includes orders Canellales, Piperales, Laurales, and Magnoliales. Binomial name Amborella trichopoda Amborella trichopoda is a rare shrub found only in New Caledonia. ... Binomial name Amborella trichopoda Amborella trichopoda is a rare shrub found only in New Caledonia. ... Families Cabombaceae - fanworts Nymphaeaceae - water lilies The Nymphaeales are an order of flowering plants, including two families of aquatic herbs: Family Nymphaeaceae (waterlily family) Family Cabombaceae (fanwort family) Sometimes the Cabombaceae are included within the Nymphaeaceae. ... Families See text The Austrobaileyales are an order of basal flowering plants comprising the following families: Family Austrobaileyaceae Family Trimeniaceae Family Illiciaceae (star anise) Family Schisandraceae (schisandra, kadsura) This essentially corresponds to the order Illiciales in the older Cronquist system, which only included the last two families. ... Species Ceratophyllum demersum Ceratophyllum submersum Ceratophyllum is a cosmopolitan genus of flowering plants, commonly found in ponds, marshes, and quiet streams in tropical and in temperate regions. ... Orders Basal eudicots Ranunculales Buxales Trochodendrales Proteales Gunnerales Berberidopsidales Dilleniales Caryophyllales Saxifragales Santalales Vitales Basal rosids Crossosomatales Geraniales Myrtales Eurosids I Zygophyllales Celastrales Malpighiales Oxalidales Fabales Rosales Cucurbitales Fagales Eurosids II Brassicales Malvales Sapindales Basal asterids Cornales Ericales Euasterids I Garryales Solanales Gentianales Lamiales Unplaced: Boraginaceae Euasterids II Aquifoliales Apiales... Orders Base Monocots: Acorus Alismatales Asparagales Dioscoreales Liliales Pandanales Family Petrosaviaceae Commelinids: Arecales Commelinales Poales Zingiberales Family Dasypogonaceae Monocotyledons or monocots are a group of flowering plants usually ranked as a class and once called the Monocotyledoneae. ... Families Canellaceae Winteraceae The Canellales are an order of basal dicot flowering plants, also referred to as the Winterales. ... Families Aristolochiaceae Hydnoraceae Lactoridaceae Piperaceae Saururaceae The Piperales are an order of flowering plants. ... Families Atherospermataceae Calycanthaceae Gomortegaceae Hernandiaceae Lauraceae Monimiaceae Siparunaceae The Laurales are an order of flowering plants. ... Families Annonaceae Degeneriaceae Eupomatiaceae Himantandraceae Magnoliaceae Myristicaceae The Magnoliales are an order of flowering plants. ...