AndroeciumA Greek word came to Latin as androecium and then into Spanish as androecium. It’s about a concept used in the field of botany with reference to the male whorl of flowers in spermatophyte plants (also known as phanerogams).

The whorls are at least three organs or appendages that are in the same plane around a stem. In the case of androecium, it is made up of stamens (male flower organs). It can be said, in this way, that the androecium is the sector of the flower where the male gametes. These gametes are found in the grains of the pollen.

The stamens of the androecium are composed of the filament and the anther. The filament is the sterile part of the androecium; its length varies in each case: it can be very short or very long, or even absent. When the latter occurs, the anthers are said to be sessile, that is, they are subject to substratum in the absence of the support that the filament would provide. Although it is usually in the shape of a thread, it can also have certain appendages and have a considerable thickness, so we are not talking about a strict aspect for all individuals.

Unlike the filament, the anther is the part fertile of the androecium. The normal thing is that it consists of two teak (cells within which the formation of spores occurs; each of them has two microsporangia or pollen sacs), as in the case of Malvaceae; the MegatrithecaInstead, they have three. A sterile piece of tissue known by the name of connective is in charge of joining the teak.

From the anther the exit of the pollen containing the gametes. Said output, known as dehiscence, It can be carried out in different ways according to how the anther opens. It takes place after the maturation of the pollen grains and the tissue in charge of this task is called endothecium.

AndroeciumWhen the opening of the anther of the androecium occurs in the entire extension of the septum that divides the sacks pollen, which occurs more frequently, there is talk of longitudinal dehiscence. In the Lachemilla and the Hippocratea, on the other hand, the so-called transverse dehiscence.

These are not the only two possibilities of dehiscence in the androecium, but there are others that are characterized by a location in limited regions, which arise as windows or valves; is the case of the poricidal dehiscence, in which there is no tissue endothecium and therefore the exit of the pollen is carried out by means of the rupture of the tissue of the upper end of the anther and the formation of specific pores for this task.

The number of stamens in the androecium is highly variable: in some cases it can be only one, as in some Euphorbiaceae; the Oleaceae, for their part, they have two; in the Myrtaceae, several are appreciated. Taking these examples into account, the names given to the flowers according to their number of stamens they are monandras, diandras and polyandras, respectively.

It should be noted that, in the structure of the flower, the androecium surrounds the gynoecium: the reproductive female part that is made up of carpels. The androecium is usually found in the perianth, which is formed by the sepals and petals. It is important to mention that the androecium can be shorter or more extensive than the perianth, sometimes protruding from it. On the other hand, the position of the whorls also varies according to the floral species.