Doellingeria

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Doellingeria
Doellingeria umbellata.jpg
Doellingeria umbellata
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Astereae
Genus: Doellingeria
Nees
Species

3

Doellingeria is a genus of flowering plants in the aster family, Asteraceae.[1] It contains three species native to eastern North America which are now usually treated as separate from genus Aster. They are known commonly as tall flat-topped asters[2] or whitetops.[3]

Some authorities include up to 10[4] or 11 species in Doellingeria, but phylogenetic analyses suggest that any Asian plants in the genus should be classified in Aster, making Doellengeria a North American genus of 3 species.[5] A fourth is now treated as Oclemena reticulata.[2]

Doellingeria as it is now defined is a genus of perennial herbs growing from rhizomes or woody bases. The unbranched stems grow erect and the tallest can reach two meters in height. The alternately arranged leaves have smooth edges and are sometimes woolly or rough-haired. The flower heads are a few millimeters long and contain 2 to 10 white ray florets, sometimes more. The disc florets are light yellow and the lobes at the tips may spread or curl. The fruit is a cypsela with a pappus of three rings of white or tan bristles and an outer ring of scales.[2]

Species include:[2]

References[edit]

  1. ^ Greuter, W. (2006+). Doellingeria. In: Greuter, W. & E. von Raab-Straube. (eds.). Compositae. Euro+Med Plantbase.
  2. ^ a b c d Doellingeria. Flora of North America.
  3. ^ Doellingeria. Integrated Taxonomic Information System (ITIS).
  4. ^ Doellingeria. The Plant List.
  5. ^ Li, W. P., et al. (2012). Phylogenetic relationships and generic delimitation of Eurasian Aster (Asteraceae: Astereae) inferred from ITS, ETS and trnL-F sequence data. Annals of Botany 109(7), 1341-57.