Coreopsis

Coreopsis lanceolata, cultivated form

The girls eyes ( Coreopsis ), also called Beautiful face, a genus of flowering plants of the daisy family are (Asteraceae). The majority of the species of North American origin. Some varieties are often grown as ornamental plants.

Description

These are annual or perennial herbaceous plants, rarely also to subshrubs or shrubs. Most species reach heights of growth between 20 cm and 80 cm, some are even higher. Some of the species can spread by underground or above -ground foothills. All types grow upright and are more or less branched.

About the leaves can be used for the genus nothing general to say: You can all be basal, all sitting on the stem, or both. You can be opposite or alternate, or both. There are both types with simple, entire leaves, as species with deep finger-shaped or lobed leaves fiederförmig. The hair varies from completely bald and hairy. Often the leaves of young plants differ from the later leaves.

The bloom conditions are alone at the end of long stems or in loose umbrella-. They consist of ray florets and disc florets. In each flower head there on the edge about eight ( 5-13 ) ray florets, with cultural forms and more. They are usually yellow, sometimes on the bottom with a dark, reddish-brown stain, hairy and whitish to reddish in some species. The fertile florets are also yellow, sometimes brown on top or entirely reddish.

The achenes are without pappus or it consists of two bristly caps or shed.

Distribution and habitat requirements

Of the 35 to 80 depending on the view modes and countless variations of the genus is the overwhelming number (28 ) from North America. Some types also come from the Neotropics and the Old World.

The habitat requirements of the species are quite different. However, most species prefer open, sometimes sandy, sometimes rocky, depending on the type very dry or very wet sites.

System

In the genus Coreopsis 35 to 80 types can be distinguished, depending on the view. The girls eyes are to the genus of the two teeth ( Bidens ) closely related; partly they were grouped in this genus.

For the genus Coreopsis L. has the following synonyms:

• Calliopsis Rchb.
• Epilepis Benth.
• Leptosyne DC.
• Pugiopappus A.Gray
• Selleophytum Urb.
• Tuckermannia Nutt.

The genus is divided into several sections. Here the list of species according to GRIN stating the section membership:

Use

As ornamental plants species play a role in the following ways:

• Coreopsis auriculata
• Coreopsis grandiflora, a very popular ornamental plant with bright yellow flowers.
• Coreopsis lanceolata, with lanceolate, often at the base fiederschnittigen leaves and dark yellow or light orange flowers which sometimes formed at the base have a red-brown spot.
• Coreopsis maritima
• Coreopsis rosea with pink flowers and a yellow flower background.
• Coreopsis tinctoria, an annual with broad dark brown colored flowers reason.
• Coreopsis tripteris
• Coreopsis verticillata with deeply divided into narrow sections of leaves.

Swell

• Flora of North America - Coreopsis
• Cheers Gordon (ed.): Botanica. The ABC's of plants. 10,000 species in text and image. Könemann, Cologne 2003, ISBN 3-8331-1600-5.