NATIONAL ACADEMY OF SCIENCES OF UKRAINE
State Museum of Natural History
Biodiversity Data Centre

Scleranthus annuus L.

Synonym
  • Scleranthus comosus Dumort.
  • Scleranthus divaricatus Dumort.
  • Scleranthus venustus Strobl
Vernacular Name
German Knotgrass, German Knotweed, Annual Knawel
Images
Conservation status
No status defined
Value of species
Invasive species; Medicinal plant
Remarks
Detail
It is native to Europe, Asia, and North Africa, and it is known throughout the rest of the temperate world as an introduced species and a common weed. It grows in many types of habitat, often in disturbed areas. It is an annual herb with low, spreading stems up to 15 centimeters long growing from a taproot. The leaves are needle-like or linear in shape with sharp, stiff points. They are oppositely arranged in pairs about the stem and are fused together at the bases. Flowers occur in pairs or small clusters of up to five. The flowers lack petals but have bell-shaped calyces of green petal-shaped sepals.
Book reference
Experts
  • Alexander KUZYARIN, Dr, e-mail: kuzyarin@gmail.com

Taxonomic branch

Biota
Eukaryota
Plantae
Viridiplantae
Tracheophyta
Euphyllophytina
Magnoliopsida
Caryophyllales
Caryophyllaceae