Gentiana acaulis

Cooking shear gentian ( Gentiana acaulis ) mottled blue corolla tube inside olive-green

The Koch gentian ( Gentiana acaulis), also written chef gentian and also known as Stemless gentian, Stemless gentian silicate or silicate - bell - gentian, is a species of the genus Gentiana (Gentiana ). Stemless Gentian is the exact translation of the botanical name. It often leads to confusion with another gentian, the Clusius gentian or lime - bell - gentian, this is also called Stemless gentian and both species possess similar characteristics (Gentiana clusii Perr & Song. . ); there are vicarious species in the mountains of Europe.

Description

The Koch gentian grows as a low, overwintering green, perennial herbaceous plant, reaching heights of growth up to 10 inches. The leaves are borne in a basal rosette. The simple, non- leathery leaf blade is obovate to elliptic, obtuse or it ends with a short tip. The leaf margin is smooth.

The flowering period extends, depending on the location of May to August. On a short inflorescence stem is a single, about 5 inches high bloom. The hermaphrodite flower is fünfzählig double perianth. The five sepals are fused into a calyx tube; the five slightly protruding, at its lower end a little constricted and sharply pointed sepals are usually much shorter than half the calyx tube, the calyx bays are wide and there is a white skin connection available. The five azure - blue petals are fused bell-shaped. The corolla tube is internally mottled olive-green.

Differentiation of Gentiana acaulis and Gentiana clusii

The Koch gentian differs from Clusius gentian by the wider, softer rosette leaves and the five green spots at the throat of the azure flowers bell. The sepals of Gentiana acaulis are constricted at the base and shorter than half the corolla tube while they are clusii longer than half the corolla tube in Gentiana and towards the bottom are wider. The two species are largely free of overlap in their occurrence, as clusii limestone Gentiana needed, whereas Gentiana acaulis only on acid silicate soil grows ( Vikariismus ).

Ecology

The Koch Gentian is a perennial rosette plant. His upright protruding leaves are used by inwardly inclined chutes as a water collector. Zugwurzen on the floor holding the rose permanently close to the ground.

The flowers are vormännliche " Large funnel flowers " and typical blue colored by anthocyanins " bumblebee flowers". The Kronblattzipfel are by touch irritable ( thigmonasty ), as well as the whole flower is closed in wet weather. The five stamens closely surround the stylus and the anthers form a tube; the stamens are connected by fins with the Blütenkronröhre. This gives rise to five tubular additions ( revolver flower) to the deposited at the base of the ovary nectar. The corolla tube has inside flashy Tüpfelsaftmale olive on a light background, which is particularly prominent in diaphanous light. Pollinators are bumblebees and butterflies. Also, self-pollination is possible by being pressed to the anther stigma lobes. Bloom time is from May to August.

The fruits are unicompartmental, bivalve capsules, and they are serving as the porch, enclosed permanent corolla tube; they are uplifted by the after bloom highly elongated stems. The fruits are so wind spreader. The seeds are spread as granules or as a flyer Anhafter. They are dark and cold germinator germinator. Fruit ripening is from August to October.

Occurrence

The Koch Gentian occurs for example in the Alps, the Jura, in the Cevennes and the Pyrenees. The Koch gentian grows at altitudes 800-3000 m on well-supplied with water silicate soils in an acidic environment.

Use

The species is an ornamental plant in many varieties on the market.

Conservation

The Koch Gentian is, like all other types of gentian, in Germany under protection. The full- use of fertilizers ( manure, manure, fertilizer ) to increase the yield Wies eg Nardus grasslands can, even at this kind entire stocks disappear. The harmful effect lasts for decades.