20 Examples Of Dicot Plants With Pictures

[Flaviano Goldammer]

Thedicotyledons, 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. There are around 200,000 species within this group.[3] The other group of flowering plants were called monocotyledons (or monocots), typically each having one cotyledon. Historically, these two groups formed the two divisions of the flowering plants.

Largely from the 1990s onwards, molecular phylogenetic research confirmed what had already been suspected: that dicotyledons are not a group made up of all the descendants of a common ancestor (i.e., they are not a monophyletic group). Rather, a number of lineages, such as the magnoliids and groups now collectively known as the basal angiosperms, diverged earlier than the monocots did; in other words, monocots evolved from within the dicots, as traditionally defined. The traditional dicots are thus a paraphyletic group.[4]

The eudicots are the largest monophyletic group within the dicotyledons. They are distinguished from all other flowering plants by the structure of their pollen. Other dicotyledons and the monocotyledons have monosulcate pollen (or derived forms): grains with a single sulcus. Contrastingly, eudicots have tricolpate pollen (or derived forms): grains with three or more pores set in furrows called colpi.

Aside from cotyledon number, other broad differences have been noted between monocots and dicots, although these have proven to be differences primarily between monocots and eudicots. Many early-diverging dicot groups have monocot characteristics such as scattered vascular bundles, trimerous flowers, and non-tricolpate pollen.[5] In addition, some monocots have dicot characteristics such as reticulated leaf veins.[5]

Traditionally, the dicots have been called the Dicotyledones (or Dicotyledoneae), at any rank. If treated as a class, as they are within the Cronquist system, they could be called the Magnoliopsida after the type genus Magnolia. In some schemes, the eudicots were either treated as a separate class, the Rosopsida (type genus Rosa), or as several separate classes. The remaining dicots (palaeodicots or basal angiosperms) may be kept in a single paraphyletic class, called Magnoliopsida, or further divided. Some botanists prefer to retain the dicotyledons as a valid class, arguing its practicality and that it makes evolutionary sense.[8]

Under the Dahlgren and Thorne systems, the subclass name Magnoliidae was used for the dicotyledons. This is also the case in some of the systems derived from the Cronquist system.[citation needed] These two systems are contrasted in the table below in terms of how each categorises by superorder; note that the sequence within each system has been altered in order to pair corresponding taxa

There exist variances between the superorders circumscribed from each system. Namely, although the systems share common names for many of the listed superorders, the specific list orders classified within each varies. For example, Thorne's Theanae corresponds to five distinct superorders under Dahlgren's system, only one of which is called Theanae.

There are several examples of dicot plant which are distributed from our home garden to dense forest. Dicot plants are characterized by their taller height, woody nature, tap root system, broad float leaf with reticulate venation and presence of two cotyledon in their seeds. These plants bear flowers and belongs to phanerogams. Plant species are distributed from tropical to alpine region. They show richer diversity distribution which are widely categorized into trees, shrubs and herbs.

There is such a wide diversity of important crops. This section provides examples of dicot plants across many different plant families. These crops have been selected for a wide range of uses, including their sugar content, fiber content, oil content, sweetness, and heat/spice level. They demonstrate a huge range of morphological and flavor traits.

Like animals, plants are multicellular eukaryotes whose bodies are composed of organs, tissues, and cells with highly specialized functions. Tissues are groups of similar cells that work together on a specific task. Organs are structures made up of two or more tissues organized to carry out a particular function, and groups of organs with related functions make up the different organ systems. Seeded plants (angiosperms and gymnosperms) have two organ systems:

Plant tissues fall into two general categories: meristematic tissue, and permanent (or non-meristematic) tissue. Meristematic tissue is functionally equivalent to stem cells in animals: undifferentiated cells that continue to divide and generate new cells and new tissues. (One key difference between animal stem cells and plant meristems is that animal stem cells contribute to replacing aging or injured tissues, while plant meristems contribute to new growth over the life of the plant). In contrast, permanent tissue consists of plant cells that are no longer actively dividing.

Vascular tissue in plants is made of two specialized conducting tissues: xylem, which conducts water, and phloem, which conducts sugars and other organic compounds. The xylem and phloem are always next to each other. In stems, the xylem and the phloem form a structure called a vascular bundle; in roots, this is termed the vascular stele or vascular cylinder. A single vascular bundle always contains both xylem and phloem tissues.

Xylem tissue transports water and nutrients from the roots to different parts of the plant. Xylem is composed of vessel elements and tracheids, both of which are tubular, elongated cells that conduct water:

Each plant organ contains all three tissue types, with different arrangements in each organ. There are also some differences in how these tissues are arranged between monocots and dicots, as illustrated below:

Most of the plants that we see around are dicots. There are 199,350 different species of plants included within this group. They are divided into several different families depending on the dicot plant structures. Some examples of dicot plant families are as follows:

The most important difference between the monocots and dicots is the number of embryonic leaves or cotyledons. There are two cotyledons in the seeds of these plants that actually emerge above the soil when the seed germinates. They then turn green and form the first two leaves of the new plant.

In dicots, the stems have vascular bundles, consisting of two structures, the xylem, and the phloem. The xylem helps to transport water and minerals from the root to the other parts of the plant and the phloem transports food that is made in the leaves, to the storage organs. These vascular bundles are arranged in a circular manner around the edge of the stem.

The flower parts are Dicot usually present in fours or fives. Sometimes, they are found in multiples of either number. These flower parts include petals, sepals, and pistils, and the reproductive parts of the plant.

Most of the plants we see around are dicots. They are generally broadleaf trees, ornamental flowers, fruits, and vegetables. Now, that you know the dicot plant characteristics, we are sure you will be able to identify the dicot plants around!

Any angiosperm (flowering plant) with two leaves (cotyledons) in the seed embryo is referred to as a dicotyledon or dicot. About 175,000 different species of dicots are known to exist. Dicots, which include trees, shrubs, and wide-leaved flowering plants like sunflowers, magnolias, daisies, and geraniums, are the most common type of garden plants.

Stems that are still attached to their parent plant may form roots where they come in contact with a rooting medium. This method of vegetative propagation is generally successful, because water stress is minimized and carbohydrate and mineral nutrient levels are high. The development of roots on a stem while the stem is still attached to the parent plant is called layering. A layer is the rooted stem following detachment (removal) from the parent plant.

Some plants propagate naturally by layering, but sometimes plant propagators assist the process. Layering is enhanced by wounding the stem where the roots are to form. The rooting medium should always provide aeration and a constant supply of moisture.

Simple layering can be accomplished by bending a low growing, flexible stem to the ground. Cover part of it with soil, leaving the remaining 6 to 12 inches above the soil. Bend the tip into a vertical position and stake in place (Figure 1). The sharp bend will often induce rooting, but wounding the lower side of the bent branch may help also. Simple layering can be done on most plants with low-growing branches. Examples of plants propagated by simple layering include climbing roses, forsythia, rhododendron, honeysuckle, boxwood, azalea, and wax myrtle.

Simple layering can be done in early spring using a dormant branch, or in late summer using a mature branch. Periodically check for adequate moisture and for the formation of roots. It may take one or more seasons before the layer is ready to be removed for transplanting.

Compound (serpentine) layering is similar to simple layering, but several layers can result from a single stem. Bend the stem to the rooting medium as for simple layering, but alternately cover and expose sections of the stem. Each section should have at least one bud exposed and one bud covered with soil. Wound the lower side of each stem section to be covered (Figure 3). This method works well for plants producing vine-like growth such as heart-leaf philodendron, pothos, wisteria, clematis, and grapes.

3a8082e126