''Calyptocarpus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of flowering plants 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 w ...

. The name is derived from the

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

''kalypto'' ("covered or hidden") and ''karpos'' ("fruit"). Species are distributed in the southern

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

and

Latin America Latin America or * french: Amérique Latine, link=no * ht, Amerik Latin, link=no * pt, América Latina, link=no, name=a, sometimes referred to as LatAm is a large cultural region in the Americas where Romance languages — languages derived f ...

. These are perennial herbs with decumbent to prostrate stems up to 30 centimeters long. The oppositely arranged leaves have blades of various shapes with toothed edges.

Flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

are solitary in the leaf axils. Each has 3 to 8 light yellow ray florets and several yellow disc florets. The fruit is a flat cypsela with a pappus of 2 or more awns. There are 2Nesom, G. L. (2011)
Is ''Calyptocarpus vialis'' (Asteraceae) native or introduced in Texas?
''Phytoneuron'' 31, 1-7. to 6''Calyptocarpus''.
The Plant List. species accepted in the genus. ; Species * '' Calyptocarpus biaristatus'' - Brazil, Paraguay, Uruguay, Argentina * '' Calyptocarpus burchellii'' - southeastern Brazil * ''

Calyptocarpus vialis ''Calyptocarpus vialis'' is a species of flowering plant in the family Asteraceae. Common names for ''C. vialis'' include straggler daisy, horseherb, lawnflower, and creeping Cinderella-weed. It is native to south Texas, Mexico, Belize, Venezuela ...

'' – straggler daisy, horseherb, ''hierba del caballo'', lawnflower, creeping Cinderella-weed - Texas, Louisiana, Central America, Venezuela; naturalized in Taiwan, Australia, Hawaii, parts of United States * '' Calyptocarpus wendlandii'' - Central America, southern Mexico

References

Asteraceae genera Heliantheae {{Heliantheae-stub