Hymenostephium
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''Hymenostephium'' is a genus of flowering plants in the family Asteraceae. It includes herbs and slender shrubs that occur from Mexico through to Venezuela and north-western Argentina.


Description

''Hymenostephium'' is characterized by the relatively slender habit of the plants, 1–2 seriate involucres, and relatively small heads of flowers. There is variation in the pappus which, in part, has led to some members having been placed formerly in the now empty genus ''Haplocalymma'', or in separate genera now considered as synonymous with ''Hymenostephium''. Molecular phylogenetic data place the genus as sister to ''Sclerocarpus'' and in a relatively basal position in the subtribe Helianthinae, the group that includes the common sunflower (''Helianthus annuus'').Turner, Billie T. 2013. Recension of the Mexican species of ''Hymenostephium'' (Asteraceae:Helianthese). Phytologia 95:1-9


Species

Includes 22 accepted species; * '' Hymenostephium anomalum'' (S.F.Blake) E.E.Schill. & Panero - Colombia * '' Hymenostephium brandegeei'' (S.F.Blake) E.E.Schill. & Panero - Mexico ( Baja California) * '' Hymenostephium cordatum'' (Hook. & Arn.) S.F.Blake - Mexico to northern Colombia * '' Hymenostephium debile'' (Cabrera) Cabrera - Argentina ( Jujuy ,
Salta Salta () is the capital and largest city in the Argentine province of the same name. With a population of 618,375 according to the 2010 census, it is also the 7th most-populous city in Argentina. The city serves as the cultural and economic ce ...
), Bolivia ( Santa Cruz) * '' Hymenostephium gracillimum'' (Brandegee) E.E.Schill. & Panero - Mexico ( Oaxaca,
Chiapas Chiapas (; Tzotzil language, Tzotzil and Tzeltal language, Tzeltal: ''Chyapas'' ), officially the Free and Sovereign State of Chiapas ( es, Estado Libre y Soberano de Chiapas), is one of the states that make up the Political divisions of Mexico, ...
) * '' Hymenostephium hintonii'' (H.Rob.) E.E.Schill. & Panero - Mexico ( Guerrero,
Michoacán Michoacán, formally Michoacán de Ocampo (; Purépecha: ), officially the Free and Sovereign State of Michoacán de Ocampo ( es, Estado Libre y Soberano de Michoacán de Ocampo), is one of the 32 states which comprise the Federal Entities of ...
) * '' Hymenostephium kingii'' (McVaugh) E.E.Schill. & Panero - Mexico ( Nayarit,
Jalisco Jalisco (, , ; Nahuatl: Xalixco), officially the Free and Sovereign State of Jalisco ( es, Estado Libre y Soberano de Jalisco ; Nahuatl: Tlahtohcayotl Xalixco), is one of the 31 states which, along with Mexico City, comprise the 32 Federal En ...
) * '' Hymenostephium lepidostephanum'' (Cuatrec.) E.E.Schill. & Panero - Peru * '' Hymenostephium meridense'' S.F.Blake - Venezuela * '' Hymenostephium molinae'' (H.Rob.) E.E.Schill. & Panero - Nicaragua * '' Hymenostephium mucronatum'' (S.F.Blake) E.E.Schill. & Panero - Colombia, Venezuela * '' Hymenostephium quitensis'' (Benth.) E.E.Schill. & Panero - Colombia to Venezuela ( Táchira) and Ecuador * '' Hymenostephium rivularis'' (Poepp.) E.E.Schill. & Panero - Central America to western Bolivia * '' Hymenostephium rudbeckioides'' S.F.Blake - Ecuador to Peru * '' Hymenostephium serratum'' (Rusby) E.E.Schill. & Panero - Colombia, Venezuela * '' Hymenostephium strigosum'' (Klatt) E.E.Schill. & Panero - Costa Rica * '' Hymenostephium superaxillare'' S.F.Blake - Mexico (
Chihuahua Chihuahua may refer to: Places *Chihuahua (state), a Mexican state **Chihuahua (dog), a breed of dog named after the state **Chihuahua cheese, a type of cheese originating in the state **Chihuahua City, the capital city of the state **Chihuahua Mun ...
,
Durango Durango (), officially named Estado Libre y Soberano de Durango ( en, Free and Sovereign State of Durango; Tepehuán: ''Korian''; Nahuatl: ''Tepēhuahcān''), is one of the 31 states which make up the 32 Federal Entities of Mexico, situated in ...
) * '' Hymenostephium tenue'' (A.Gray) E.E.Schill. & Panero - Mexico (Oaxaca, Chiapas, Guerrero, Michoacán,
Puebla Puebla ( en, colony, settlement), officially Free and Sovereign State of Puebla ( es, Estado Libre y Soberano de Puebla), is one of the 32 states which comprise the Federal Entities of Mexico. It is divided into 217 municipalities and its cap ...
,
México State The State of Mexico ( es, Estado de México; ), officially just Mexico ( es, México), is one of the 32 federal entities of the United Mexican States. Commonly known as Edomex (from ) to distinguish it from the name of the whole country, it is ...
, Jalisco, Nayarit) * '' Hymenostephium uniseriatum'' E.E.Schill. & Panero - Mexico (
Morelos Morelos (), officially the Free and Sovereign State of Morelos ( es, Estado Libre y Soberano de Morelos), is one of the 32 states which comprise the Federal Entities of Mexico. It is divided into 36 municipalities and its capital city is Cuer ...
, Guerrero, Michoacán, Puebla, México State) * '' Hymenostephium viride'' Steyerm. - Venezuela * '' Hymenostephium websteri'' (B.L.Turner) E.E.Schill. & Panero - Mexico (Jalisco, Nayarit) * '' Hymenostephium woronowii'' (S.F.Blake) E.E.Schill. & Panero - Mexico (Michoacán)


Distribution

They are
native Native may refer to: People * Jus soli, citizenship by right of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory ** Native Americans (disambiguation) In arts and entert ...
to the countries of north western Argentina, Bolivia, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panamá, Peru and Venezuela.


References

Asteraceae genera Heliantheae Flora of Mexico Flora of Central America Flora of western South America Flora of Northwest Argentina {{Heliantheae-stub