Spergularia rubra
Encyclopedia
Spergularia rubra, the red sand spurrey or red sandspurry, is a plant species in the pink family
Caryophyllaceae
The Caryophyllaceae, commonly called the pink family or carnation family, is a family of flowering plants. It is included in the dicotyledon order Caryophyllales in the APG III system, alongside 33 other families, including Amaranthaceae, Cactaceae and Polygonaceae...

. It is native to Europe and Asia, and it is present on other continents, including North and South America and Australia, as an introduced species
Introduced species
An introduced species — or neozoon, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its indigenous or native distributional range, and has arrived in an ecosystem or plant community by human activity, either deliberate or accidental...

 and in many areas a common weed
Weed
A weed in a general sense is a plant that is considered by the user of the term to be a nuisance, and normally applied to unwanted plants in human-controlled settings, especially farm fields and gardens, but also lawns, parks, woods, and other areas. More specifically, the term is often used to...

. It grows in a wide variety of habitat types. It is an annual or perennial herb producing a slender, glandular stem up to about 25 centimeters long. It is lined with slightly fleshy linear or threadlike leaves each under 2 centimeters long. The leaves may be tipped with hard points or spines, and they are accompanied by shiny white lance-shaped stipule
Stipule
In botany, stipule is a term coined by Linnaeus which refers to outgrowths borne on either side of the base of a leafstalk...

s. Flowers occur in the leaf axils and at the tips of the stems. They have hairy, glandular sepal
Sepal
A sepal is a part of the flower of angiosperms . Collectively the sepals form the calyx, which is the outermost whorl of parts that form a flower. Usually green, sepals have the typical function of protecting the petals when the flower is in bud...

s and five round-oval pink petals.

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