''Calyptocarpus vialis'' is a

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

of flowering plant in the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae ...

. Common names for ''C. vialis'' include straggler daisy, horseherb, lawnflower, and creeping Cinderella-weed. It is native to south Texas, Mexico, Belize, Venezuela, and the Caribbean. It has also been introduced east of Texas, Argentina, Hawaii, India, Java, Australia, and Taiwan. It is one of only three

in the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

Calyptocarpus ''Calyptocarpus'' is a genus of flowering plants in the family Asteraceae. The name is derived from the Greek ''kalypto'' ("covered or hidden") and ''karpos'' ("fruit"). Species are distributed in the southern United States and Latin America. T ...

''. The opposite leaves are typically long and triangular to lanceolate in shape. It bears heads of yellow flowers, with around 10–20 disc florets and 3–8

ray floret The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

s, the laminae of the latter around long. It flowers year round. It is a weedy species, found in lawns and along other disturbed areas such as roadsides and paths.

References

Heliantheae {{Heliantheae-stub