Trifolium striatum
Strip clover ( Trifolium striatum )
The strip Clover is a Fabaceae ( Faboideae ) of the genus Trifolium. It blooms in the months of May to August, sometimes later. The name strip Clover has its origins in the 10 highly prominent calyx nerves. It is therefore also sometimes referred to as Gestreifthülliger clover. He is placed in the genus Trifolium in the section, subsection Stenosemium.
Shoots and leaves
The stems and leaves of herbaceous plant are covered with short shaggy. The stem is quite thin, decumbent, ascending or erect, and usually more or less branchy. He is 5 to 30 cm long usually.
The lower leaves have up to 5 cm long stalks and have a wedge- shaped base out, upside - ovate to oblong - inverted heart-shaped, usually ausgerandete leaflets. The upper are short petiolate to almost sessile and have a wrong - ovate to deltoid shape. They are more or less 1 to 1.5 cm long and 0.3 to 0.5 times as wide. You can not or hardly thickened just possess, at an acute angle outbound, towards the edge lateral nerves. Usually they are finely denticulate only in the upper third and hairy on both sides silky.
The stipules are broadly ovate, membranous, whitish, with green or reddish nerves and are fairly quickly undressed in a pfriemliche tip.
Flowers, fruits
The flower heads are seated in the upper leaf axils, which are uppermost often approached in pairs and seemingly terminally, sitting and enveloped by the enlarged stipules of the uppermost leaves. They are spherical in shape to ovoid, usually less than 1 cm long and last slightly longer. The flowers are sessile and without bracts. The cup 10 has strong nerves, the tube is outside kurzzottig hairy, inside glabrous, distended bulbous fruit to time and has a slightly narrowed only by a torus throat. The calyx teeth lanceolate - subulate are, just last Straddling the bottom as long as or longer than the calyx tube, the crown usually not reaching the top are much shorter. The petals are light pink, dark veined, on the flower withering or very late sloping and slightly longer than the calyx. The flag is completely free, elongated front and emarginate. The wings are long nailed.
The legumes are obovate, compressed and have a lateral stylus. The seeds are ovoid, smooth and reddish in color.
Origin, distribution and habitat requirements
Trifolium striatum is a very Mediterranean -Atlantic kind in Southern Europe has a similar area such as chestnuts. Central Europe has it achieved in several ways: to the west by the Rhone- Saone and the Rhine Valley, in the south of the Po and the Adige, to the east by the Danube, Elbe and Oder ago. The North European populations carry mostly only adventitious character.
The strip Clover is a Mediterranean -Atlantic Art North to Great Britain, southern Scandinavia and Poland, from Portugal in the west to the Caucasus and Asia Minor in the east and north-west Africa to the south. He also can be found on the Canary Islands and Madeira. In Central Europe it is generally represented only very scattered.
The strip Clover is in Germany very scattered and rare, found mainly in Schleswig -Holstein, Hesse and Rhineland- Palatinate. He is in Bavaria to be lost. However, recent discoveries show yet confirmed occurrence in Haßfurt ( Lower Franconia ).
The strip - clover grows on dry pastures, along roadsides, balks, on bare clay soil, sandy fields, in gravel pits and river gravels.
Endangering
Threat in Germany: Category 3: to be avoided.