Polygala vulgaris Linnaeus, 1753
Common names: Common Milkwort [Fr], Laitier commun, Polygala commun [Fr], Gewone vleugeltjesbloem [Nl], Gewöhnliche Kreuzblume [De], Poligala commune [It]
Dinant, NAMUR ● Belgium
Description:, Herbaceous perennial plant reaching on average 7–35 cm in height. The stems have many branches and are woody at the base. It has alternating pointed leaves, almost glabrous, 2 to 4 mm wide and 10 to 20 mm long. Basal leaves are spatulate, with rounded apex, while the upper leaves are lanceolate.
The flowers are gathered in long terminal inflorescences. The color of the corolla varies between blue and violet; it rarely occurs in purple forms. The flower's outer three sepals are normally small, green and insignificant, while the inner two sepals are bigger. The inner sepals are usually shorter than the petals. The stalks of the eight stamens are joined together to form a tube, and united with this tube, one on either side, are two tiny petals. On the lower side of the flower lies the third petal; it too, is joined to the stamen tube, but it is larger, and fringed.
Biology: The flowering period extends from May through July.
Habitat: Meadows, slopes, edges of forests, heaths, sunny woods, dunes and grasslands. It is frequent in patches on calcareous grassland. Up to 2200 m.
Distribution: Europe, Western Asia and North Africa.
Wikipedia, Polygala vulgaris