There are plants with single flowers that develop one at a time at the ends of the shoots or in the leaf axils. In other plants, flowers are collected in inflorescences.
Inflorescences are groups of flowers located close to one another in a specific order. Small flowers are usually collected in inflorescences, which makes them well visible to pollinating insects. Inflorescences are simple and complex.
Inflorescences in which flowers are located on the main axis are called simple. Simple inflorescences include a brush, ear, ear, head, basket, umbrella, shield.
The inflorescence of the brush is cabbage, lily of the valley, bird cherry. In such an inflorescence, individual flowers are arranged one after another on well-visible pedicels extending from a long common axis.
A simple spike is formed by flowers that do not have pedicels (i.e., sessile), located on the common axis of the inflorescence, like in plantain.
The ear is distinguished from the ear by the thick, usually fleshy axis of the inflorescence.
The basket is an inflorescence of sunflower, Jerusalem artichoke, aster, dandelion, chamomile, sow thistle, thistle and many other plants. In such an inflorescence, usually numerous small sessile flowers are located on a thickened and expanded bed of the inflorescence. Outside, this inflorescence is protected by green leaves – a wrapper.
At the inflorescence, the head has sessile flowers located on a somewhat thickened shortened main axis. Such a spherical inflorescence is formed in clover.
A simple umbrella is an inflorescence in which pedicels of the same length emerge from the apex of the inflorescence axis. Primrose and cherry have such an inflorescence.
The flowers in the inflorescence are the scutellum, differ from the umbrella in that they have pedicels of different lengths and usually move away from the apex of the axis at some distance from each other (the flowers below have longer pedicels). The inflorescence of the scutellum is formed by a pear, a spirea.
Inflorescences with flowers located on the lateral axes extending from the main one are called complex.
If several brushes depart from a common stalk, the inflorescence is called a complex brush, or a panicle. Lilacs and grapes have such an inflorescence.
Inflorescences of wheat, rye, barley are called a complex ear. In this inflorescence, on a common axis, there are several spikelets, each of which is formed by several flowers, in rye, for example, two.
Carrots and parsley have umbrella-shaped inflorescences, consisting of several simple umbrellas. This inflorescence is called a complex umbrella.