''Shinnersia rivularis'', known as the Rio Grande bugheal or Mexican oak leaf plant, is an

aquatic plant Aquatic plants are plants that have adapted to living in aquatic environments (saltwater or freshwater). They are also referred to as hydrophytes or macrophytes to distinguish them from algae and other microphytes. A macrophyte is a plant that ...

native to

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

Coahuila Coahuila (), formally Coahuila de Zaragoza (), officially the Free and Sovereign State of Coahuila de Zaragoza ( es, Estado Libre y Soberano de Coahuila de Zaragoza), is one of the 32 states of Mexico. Coahuila borders the Mexican states of N ...

, and

Nuevo León Nuevo León () is a state in the northeast region of Mexico. The state was named after the New Kingdom of León, an administrative territory from the Viceroyalty of New Spain, itself was named after the historic Spanish Kingdom of León. With a ...

. It is classified in tribe Eupatorieae within family Asteraceae.King, Robert Merrill & Robinson, Harold Ernest. 1970. Phytologia 19(5): 297–298
/ref>Flann, C (ed) 2009+ Global Compositae Checklist
/ref> It is thought to be related to two other aquatic genera in this tribe, ''

Sclerolepis ''Sclerolepis'' is an aquatic plant native to the eastern United States. It has only one known species, ''Sclerolepis uniflora'', the pink bogbutton. It lives in ponds and other wet areas. When water is abundant, the plant lives underwater, wit ...

'' and '' Trichocoronis''. The roots live in the muck at the bottom of shallow slow-moving water (for example, along a stream), and the stem extends above the water slightly (less than 10 centimetres). ''Shinnersia'' is a common freshwater aquarium plant, and can sometimes be found having escaped cultivation. The genus is named in honor of Lloyd H. Shinners of the

Southern Methodist University , mottoeng = "The truth will make you free" , established = , type = Private research university , accreditation = SACS , academic_affiliations = , religious_affiliation = United Methodist Church , president = R. Gerald Turner , prov ...

References

Eupatorieae Aquatic plants Flora of Texas Monotypic Asteraceae genera Flora of Northeastern Mexico {{Eupatorieae-stub