Two-year-old donkey

Biennial. In the first year, it gives a rosette of leaves adjacent to the soil , in the second - a stem bearing an inflorescence - a brush.

The basal leaves are elliptical, with a base tapering to the petiole , whole-edged, spiky; stem leaves are almost sessile, broadly lanceolate, with a fine-toothed margin.

Lemon-yellow flowers , petals up to 2 cm long, with a notch. The oslinik blooms from June to September; it begins to bear fruit from the end of July.

The natural habitat is North America . It was introduced to Europe in the XVII century , and then spread further east. Now it grows wild in the middle zone of Russia , as well as in the Ciscaucasia and the Far East .

Prefers slightly moistened habitats. So, it can be found on sandy deposits along the banks of rivers, in floodplains. It is also a ruderal plant - it grows along roadsides, embankments, in weedy places.

In floriculture, the seedling has spread as a flowering plant. Under the name of evening primrose, hybrid varieties of aspen are bred.

• Gubanov I.A. et al. 941. Oenothera biennis L. - Two-year-old donkeyweed // Illustrated identifier of plants in Central Russia. In 3 t . - M .: T-in scientific. ed. KMK, Institute of Technology. ISS., 2003. - T. 2. Angiosperms (dicotyledonous: dicotyledonous). - S. 596. - ISBN 9-87317-128-9 .
• Flight, plant // Brockhaus and Efron Encyclopedic Dictionary : in 86 volumes (82 volumes and 4 additional). - SPb. , 1890-1907.

• Two-year-old aspirator (English) : information on the GRIN website. (eng.)