Scleranthus perennis

Scleranthus perennis, the perennial knawel,^[1][2] is a perennial herbaceous plant in the family Caryophyllaceae. It grows on sandy, dry, acidic soils. It can grow up to 15 cm high and has white flowers of 2–5 mm. The plant used to be economically significant as the major host plant of the Polish cochineal.

Closeup of flowers

Perennial knawel
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Caryophyllaceae
Genus:	Scleranthus
Species:	S. perennis
Binomial name
Scleranthus perennis L.