# Doellingeria

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***Doellingeria*** is a genus of [flowering plants](/source/Flowering_plant) in the family [Asteraceae](/source/Asteraceae).[1] It contains species formerly included in *[Aster](/source/Aster_(genus))* but now considered to be a distinct genus. They are known commonly as **tall flat-topped asters**[2] or **whitetops**.[3]

There is still some disagreement as to which species should be included in *Doellingeria.* Some authorities include up to 10[4] or 11 species in *Doellingeria*, but [phylogenetic analyses](/source/Phylogenetics) suggest that any Asian plants in the genus should be classified in *Aster*, making *Doellengeria* an [endemic](/source/Endemic) [North American](/source/North_American) genus.[5] A fourth is now treated as *[Oclemena reticulata](/source/Oclemena_reticulata)*.[2]

*Doellingeria* as it is now defined is a genus of [perennial](/source/Perennial_plant) herbs growing from [rhizomes](/source/Rhizome) or woody bases. The unbranched stems grow erect and the tallest can reach 200 cm (79 in) in height. The [alternately](/source/Leaf_shape) arranged leaves have smooth edges and are sometimes woolly or rough-haired. The [flower heads](/source/Pseudanthium) are a few millimeters long and contain 2 to 10 white [ray florets](/source/Ray_florets), sometimes more. The [disc florets](/source/Disc_floret) are light yellow and the lobes at the tips may spread or curl. The fruit is a [cypsela](/source/Asteraceae#Fruits_and_seeds) with a [pappus](/source/Pappus_(flower_structure)) of three rings of white or tan [bristles](/source/Bristles) and an outer ring of scales.[2]

**Species[6][7]**

- *[Doellingeria dimorphophylla](/source/Doellingeria_dimorphophylla)* (Franch. & Sav.) G.L.Nesom - [Japan](/source/Japan)
- *[Doellingeria infirma](/source/Doellingeria_infirma)* (Michx.) Greene eastern USA (from [Alabama](/source/Alabama) to [Massachusetts](/source/Massachusetts))
- *[Doellingeria komonoensis](/source/Doellingeria_komonoensis)* (Makino) G.L.Nesom - [Japan](/source/Japan)
- *[Doellingeria longipetiolata](/source/Doellingeria_longipetiolata)* (C.C.Chang) G.L.Nesom - [Sichuan](/source/Sichuan) in [China](/source/China)
- *[Doellingeria rugulosa](/source/Doellingeria_rugulosa)* (Maxim.) G.L.Nesom - [Japan](/source/Japan)
- *[Doellingeria scabra](/source/Doellingeria_scabra)* (Thunb.) Nees - [China](/source/China), [Japan](/source/Japan), [Korea](/source/Korea), [Russia](/source/Russia) ([Irkutsk](/source/Irkutsk), [Amur Oblast](/source/Amur_Oblast), [Khabarovsk](/source/Khabarovsk), [Primorye](/source/Primorye))
- *[Doellingeria sekimotoi](/source/Doellingeria_sekimotoi)* (Makino) G.L.Nesom - [Japan](/source/Japan)
- *[Doellingeria sericocarpoides](/source/Doellingeria_sericocarpoides)* Small - southeastern USA ([Texas](/source/Texas) to [Maryland](/source/Maryland); a few populations in [New York](/source/New_York_(state)) and [New Jersey](/source/New_Jersey))
- *[Doellingeria sohayakiensis](/source/Doellingeria_sohayakiensis)* (Koidz.) G.L.Nesom - [Japan](/source/Japan)
- *[Doellingeria umbellata](/source/Doellingeria_umbellata)* (Mill.) Nees - USA ([Florida](/source/Florida) to [Maine](/source/Maine) + [North Dakota](/source/North_Dakota)); [Canada](/source/Canada) ([Alberta](/source/Alberta) to [Newfoundland](/source/Newfoundland))

## References

1. Greuter, W. (2006+). [*Doellingeria*.](http://ww2.bgbm.org/EuroPlusMed/PTaxonDetail.asp?NameId=7704145&PTRefFk=7000000) In: Greuter, W. & E. von Raab-Straube. (eds.). Compositae. Euro+Med Plantbase.

1. [*Doellingeria*.](http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=110737) Flora of North America.

1. [*Doellingeria*.](https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=500894) Integrated Taxonomic Information System (ITIS).

1. [*Doellingeria*.](http://www.theplantlist.org/browse/A/Compositae/Doellingeria/) The Plant List.

1. 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.](https://archive.today/20131115071631/http://aob.oxfordjournals.org/content/109/7/1341.full) *Annals of Botany* 109(7), 1341-57.

1. [The Plant List search for *Doellingeria*](http://www.theplantlist.org/tpl1.1/search?q=Doellingeria)

1. [Biota of North America Program 2013 county distribution maps](http://bonap.net/NAPA/TaxonMaps/Genus/County/Doellingeria)

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Adapted from the Wikipedia article [Doellingeria](https://en.wikipedia.org/wiki/Doellingeria) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Doellingeria?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.