Succession

2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38

Sequence (lat. Bidens) - a genus of flowering herbaceous plants, included by botanists in the Asteraceae family (lat. Asteraceae). According to their external data, plants of the genus Chereda are similar to plants of the genus Coreopsis (Latin Coreopsis) of the same family. In the literature, representatives of the genus Coreopsis are often called "Series". For example, fluffy Coreopsis (lat. Coreopsis pubescens) has the name "Star Line". When the consideration of plants of two genera comes to their fruits, then there is no longer any need to talk about similarities. While the fruits of Coreopsis look like small shiny and smooth insects, the fruits of most species of the series are bristly and prickly.

What's in your name

It is interesting that it was precisely the different appearance of the fruits of Coreopsis and Cereda that divided these, in many ways similar, sometimes difficult to distinguish, plants into two independent genera. The appearance of the fruit served as the basis for the Latin name of each of these genera.

If two Greek words connected smooth brown fruits with the appearance of shiny small insects, giving the name to the genus Coreopsis, then the Latin name of the genus Chereda - Bidens, reflected the ruffy fruits of most species of this genus, ending in two spiny crests ("bis" - "two"; "Dens" - "tooth"). Such two-toothed "forks" of the Burmese fruit can be admired in the following photo:

In addition to the official botanical name, the genus Chereda has many other names, among which you can find the following: "Spanish needles"; "Shoemaker's clothespins"; "A series of sunflowers"; "Thorny marigolds" and others.

Description

The number of plant species that botanists attribute to the genus Chereda brings chaos to the taxonomy even among specialists, let alone ordinary plant lovers who are fans of the Chereda.

According to various estimates, from 150 to 250 plant species belong to the genus Bidens. With such a wide spread in the number of species, it is unrealistic to make a reliable unambiguous description of the representatives of the genus. Therefore, descriptions of specific species, which do not cause doubts among botanists, will look much clearer.

After all, straight or branched stems of annual herbaceous plants of the genus Chereda can be covered with leaves of various shapes: pinnately dissected, whole, or divided into several lobes. Typical for the family Aster inflorescences - baskets can be formed by marginal petal flowers and median tubular flowers, or they may not have marginal asexual flowers, revealing to the world only bisexual tubular flowers of their central circle. The fruit is a bristly achene.

Varieties

* A series of double-feathery (lat. Bidens bipinnata)

* Three-part succession (lat. Bidens tripartita)

* A series of Henderson (lat. Bidens hendersonensis)

* A series of drooping (lat. Bidens cernua)

* A series of spinal lobes (lat. Bidens connata)

* A series of foliage (Latin Bidens frondosa)

* A succession of poplar (Latin Bidens populifolia).

Spreading

Plants of the genus Chereda can be found on any continent except Antarctica. They grow in tropical and temperate warm regions of the planet.

Among the numerous species, there are those that are endangered.

The genus Chereda is so closely related to the genus Coreopsis that it is sometimes difficult to distinguish plants of one genus from plants of another genus.

Usage

A small amount of flower nectar of some species of Burmese supports bees in autumn, when many plants have already faded.

Certain types of the series are used by traditional medicine in the treatment of skin diseases, dysentery and sore joints.

The leaves and flowers of the Burmese are used to obtain dyes for wool and silk fabrics.