Hymenostephium

Hymenostephium
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Hymenostephium
Benth. in Benth. & Hook.f.
Type species
Hymenostephium mexicanum
Benth. in Benth. & Hook.f.
Synonyms

Garcilassa Poepp. & Endl. Viguiera sect. Diplostichis S.F.Blake

Hymenostephium is a genus of flowering plants in the family Asteraceae. It includes herbs and slender shrubs that occur from Mexico through Central America and into South America.[1][2]

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 the members having been placed formerly in several different genera (Garcilassa, Haplocalymma, and Viguiera sect. Diplostichis). Molecular phylogenetic data [3] 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).[4]

Species
  1. Hymenostephium angustifolium Benth. - Colombia
  2. Hymenostephium anomalum (S.F.Blake) E.E.Schill. & Panero - Colombia
  3. Hymenostephium brandegeei (S.F.Blake) E.E.Schill. & Panero - Baja California
  4. Hymenostephium debile (Cabrera) Cabrera - Argentina (Jujuy + Salta), Bolivia (Santa Cruz)
  5. Hymenostephium goebelii (Klatt) S.F.Blake - Venezuela
  6. Hymenostephium gracillimum (Brandegee) E.E.Schill. & Panero - Oaxaca, Chiapas
  7. Hymenostephium hintonii (H.Rob.) E.E.Schill. & Panero - Guerrero, Michoacán
  8. Hymenostephium lepidostephanum (Cuatrec.) E.E.Schill. & Panero - Peru
  9. Hymenostephium meridense S.F.Blake - Venezuela
  10. Hymenostephium mucronatum (S.F.Blake) E.E.Schill. & Panero - Colombia, Venezuela
  11. Hymenostephium serratum (Rusby) E.E.Schill. & Panero - Colombia, Venezuela
  12. Hymenostephium tenuis (A.Gray) E.E.Schill. & Panero - Oaxaca, Chiapas, Guerrero, Michoacán, Puebla, México State, Jalisco, Nayarit
  13. Hymenostephium uniseriatum E.E.Schill. & Panero - Morelos, Guerrero, Michoacán, Puebla, México State
  14. Hymenostephium viride Steyerm. - Venezuela
  15. Hymenostephium websteri (B.L.Turner) E.E.Schill. & Panero - Jalisco, Nayarit
  16. Hymenostephium woronowii (S.F.Blake) E.E.Schill. & Panero - Michoacán

References

  1. Bentham, George in Bentham, George & Hooker, Joseph Dalton. 1873. Genera plantarum :ad exemplaria imprimis in Herberiis Kewensibus servata definita 2: 382 in Latin
  2. Tropicos, Hymenostephium Benth.
  3. Schilling, E. E. and J. L. Panero. 2002. A revised classification of subtribe Helianthinae (Asteraceae, Heliantheae). Botanical Journal of the Linnean Society 140: 65-76.
  4. Turner, Billie T. 2013. Recension of the Mexican species of Hymenostephium (Asteraceae:Helianthese). Phytologia 95:1-9