NATIONAL ACADEMY OF SCIENCES OF UKRAINE
State Museum of Natural History
Biodiversity Data Centre

Rudbeckia laciniata L.

Synonym
  • Rudbeckia digitata Mill.
Vernacular Name
Cutleaf Coneflower, Cutleaf, Goldenglow, Green-headed Coneflower, Tall Coneflower, Sochan, Thimbleweed
Images
Conservation status
No status defined
Value of species
Invasive species; Ornamental species
Remarks
Detail
Occurrence: [nAu(A), aAu(L), nBe(B), cBH, nBr, cBu, nBy, nCs, Ct, ?Es, aFe, nGa(F), nGe, nHe, nHo, nHu, aIs, nIt, ?La, ?Lt, nMo, No, nPo, nRf(C, E, N, NW, S), Rf(K), nRm, nSk, Sl, cSr, Su, Uk, nUk(K, U)] (EuroMed, 2018). It is native to North America, where it is widespread in both Canada and the United States. Its natural habitat is wet sites in flood plains, along stream banks, and in moist forests. It is a robust herbaceous perennial growing up to 3 m (10 ft) tall. It has broadly ovate and somewhat glaucous leaves that are often deeply dissected. The composite flowers are produced in late summer and autumn. The disc flowers are green to yellowish green, while the rays are pale yellow. The specific epithet laciniata refers to the pinnately divided leaves. Up to six varieties of Rudbeckia laciniata are currently recognized. The varieties ampla and heterophylla are considered to be the most distinctive, while the others less so. There is variation in treatment among authors, with the less distinctive varieties sometimes being subsumed into laciniata, and variety ampla sometimes recognized at the species level. The six varieties are: R. laciniata var. ampla - Native west of the Great Plains, into to the Rocky Mountains. R. laciniata var. bipinnata - Native to New England and the Mid-Atlantic area. R. laciniata var. digitata - Native to the Southeastern Coastal Plain. R. laciniata var. heterophylla - Endemic to Levy County, Florida. R. laciniata var. humilis - Native to the southern Appalachian Mountains. R. laciniata var. laciniata - Widespread and common, native across eastern North America.
Book reference
  • Кузярін О.Т. Судинні рослини території торфовища "Білогорща” (м. Львів) // Наукові основи збереження біотичної різноманітності. - 2010. - Т.1(8), №1. - С.75-90.
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Experts
  • Alexander KUZYARIN, Dr, e-mail: kuzyarin@gmail.com

Taxonomic branch

Biota
Eukaryota
Plantae
Viridiplantae
Tracheophyta
Euphyllophytina
Magnoliopsida
Asterales
Asteraceae (=Compositae)