Eudicotyledons

Eudicotyledons

One of the two major types of flowering plants (angiosperms), characterized by possession of three apertures in their pollen; the other major type is magnoliids. Although this difference in pollen development and form has been known for a long time, it has become clear, as a result of several studies of deoxyribonucleic acid (DNA) sequences, that this difference is very significant. The high degree of coincidence of the genetic data with this pollen distinction means that it is more important to recognize this distinction than the number of seed leaves, as previously thought. See Dicotyledons, Flower

References in periodicals archive ?
(1997), in this environment, there could have occurred convergence in the habit, in leaf features and in leaf imbrication among evergreen sclerophyll life forms belonging to several families, including both eudicotyledons and monocotyledons.
The complete taxonomy of the species is Eukaryota; Viridiplantae; Streptophyta; Streptophytina; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliophyta; eudicotyledons; core eudicotyledons; rosids; fabids; Malpighiales; Euphorbiaceae; Crotonoideae; Jatropheae; Jatropha; and Jatropha gossypiifolia [32].
The numbers of species, genera and families, as well as the proportions of monocotyledons and eudicotyledon species, and the ratio of herbaceous-subshrub/shrub-arboreal species of cerrado phytophysiognomies, caatinga vegetation and cerrado-caatinga transition are presented in Table 1.