Lathyrus hirsutus

Behaartfrüchtige pea ( herbarium ) ( Lathyrus hirsutus )

The Behaartfrüchtige pea ( Lathyrus hirsutus ) is a rare in Central Europe and fickle occurring Fabaceae ( Faboideae ) of the genus Lathyrus. It blooms from June to August.

Shoots and leaves

The rung of the annual or annual - wintering herbaceous plant are glabrous or ciliate scattered. The stem is 30 to 100 cm long, usually from the bottom of way branching, ascending, erect or climbing and with the most narrow wings about 2 to 4 mm wide.

The petioles are narrower winged, about 1 to 2 cm long and only 1/8 to 1/3 times as long as the leaves. These usually carry a strong, three to multipart Ranke, on the lower foliage leaves with a short awn. The leaves always grow only in a pair are lanceolate to elliptic, about 1.5 to 6 cm long and 3-15 mm wide. They are pointed or rounded and apiculate, forming with stretched nerves nervous power, are mostly bare and of fresh or bluish green color.

The stipules are half as long to about as long as the petiole and narrow semi- arrow-shaped.

Flowers and Fruit

The racemose inflorescences are 1.5 to 3 times as long as the leaves, one to dreiblütig and have strong, angular furrowed, ending in a short awn axes. The flowers are 1 to 1.5 cm long and sit at 3-5 mm long styles in the armpit short, pfriemlicher, lasting bracts. The calyx teeth are broadly lanceolate and about as long as the tube. The crown is usually blue-violet, rarely pink or white. When wilting it is blue. The flag is dark veined and much longer than the lighter wings and whitish boat.

The pulses are linear and often slightly curved, approximately 3 to 5 cm long and 6-10 mm wide. They are densely covered with long, light, sitting on nodules hair. Reif says they are brown and verkahlen frequently. They are 5 to 6 SAMIg.

The seeds are round, warty - rough, and of a grayish brown color.

The species has the chromosome number 2n = 14

Distribution and habitat requirements

The Behaartfrüchtige pea is common in the Mediterranean area. In Central Europe only naturalized or adventitious. Otherwise, in England, Belgium, east to Ukraine, Crimea and Transcaucasia and the Near East.

The species is like other Schmetterlingsblütler among others abducted with South and Southeast European cereal or vetch seeds. Chance of Lathyrus hirsutus was in the Upper Rhine Valley already ileocecal beginning of the 17th century known. But you seem to have been introduced in most parts of Central Europe after 1830 is therefore to count among the neophytes.

The Behaartfrüchtige pea occurs in Germany rare and unstable in, especially in the central and southwestern area. Lathyrus hirsutus found in Bavaria, above all in the northern part of rare and scattered and often adventiv. Where it grows in cornfields, changing fields, on waste land, on field margins, hedgerows, quarries. It prefers calcareous soil. Phytosociological it is in Central Europe, a characteristic species of Caucalo - Adonidetum (Association Caucalidion ); nationally it is a Secalietalia - Ordnungscharakterart, but also occurs in heat-loving fringe communities.

Risk / protective

Threat in Germany: Category 2 (endangered strong).