Holosteum

Holosteum is a genus of flowering plants in the family Caryophyllaceae, commonly known as the small-flowered or sticky chickweeds. The genus is native to Europe and Asia. Species within Holosteum are typically small, annual herbs with delicate, often sticky stems and leaves. The flowers are usually small, white or pink, and borne in loose clusters. They are characterized by their five petals, which are often notched, and five sepals. The fruit is a capsule that splits open to release numerous small seeds.

The genus Holosteum contains a small number of species, with Holosteum umbellatum being the most widely distributed and recognized. This species is often found in disturbed habitats, such as roadsides, waste ground, and agricultural fields. It is considered an annual weed in many areas. The sticky nature of the stems is thought to deter small insects from feeding on the plant. Reproduction is primarily through seed, and the seeds are dispersed by wind, water, or animals. While not of significant economic importance, Holosteum species can contribute to local biodiversity.