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Dicotyledon. Magnoliatae Takht. [1] The dicotyledons, also known as dicots (or, more rarely, dicotyls ), [2] are one of the two groups into which all the flowering plants (angiosperms) were formerly divided. The name refers to one of the typical characteristics of the group: namely, that the seed has two embryonic leaves or cotyledons.
Magnoliopsida (Dicotyledons) — The Biology Primer. However flowering plants originated, we now know there are two main groups: monocots and dicots. A cotyledon is defined as a seed leaf, the first leaf that emerges as the seed germinates. Dicotyledonous plants (Class Magnoliopsida) are thought to be the most primitive flowering plants.
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Magnoliopsida. Definition noun (plant taxonomy) A taxonomic class comprised of the dicotyledonous plants, according to the Takhtajan system and the Cronquist system of flowering plant classification Supplement The flowering plants (angiosperms) that make up the division Magnoliophyta may be grouped into two major plant groups: Dicotyledoneae (or Magnoliopsida) and Monocotyledonae (or Liliopsida).
The remaining dicots (palaeodicots) may be kept in a single paraphyletic class, called Magnoliopsida, or further divided. The following lists are of the orders formerly placed in the dicots, giving their new placement in the Angiosperm Phylogeny Group System (APG-system) and that under the older Cronquist system, which is still in wide use.
- MagnoliopsidaBrongniart
- Plantae
- Magnoliophyta
May 3, 2017 · Class Magnoliopsida (dicots) Members of the Class Magnoliopsida are defined partly on the basis of the seed or seedling having two cotyledons, most obvious at germination. But the differences between dicots and monocots are many, and we will be able to recognize most flowering plants that we encounter as belonging to one or the other class ...
Dicotyledon, or dicot, any member of the flowering plants that has a pair of leaves, or cotyledons, in the embryo of the seed. There are about 175,000 known species of dicots. Most common garden plants, shrubs and trees, and broad-leafed flowering plants such as magnolias and roses are dicots.
The list of dicot species will likely grow in coming years, as floras of more remote regions are studied and dicot groups are systematically revised. In the Chenopodiaceae, most genera of the tribe Salsolaeae are C 4. However, not all Salsoleae genera have been typed, including the genera Lagenantha and Nucularia.
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