Rudbeckia grandiflora
Rudbeckia grandiflora, commonly called rough coneflower,[1] is a species of flowering plant in the family Asteraceae.
| Rudbeckia grandiflora | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Rudbeckia |
| Species: | R. grandiflora |
| Binomial name | |
| Rudbeckia grandiflora | |
Description
Growing wild in Arkansas
It is a perennial from a woody base, growing to around 120 cm tall. It produces relatively large inflorescences, with 12-25 yellow ray flowers, each around 3–5 cm long. It blooms from late spring into summer.[2][3]
Distribution
It is native to North America, where it is found primarily in the south-central United States, including a disjunct population in northwest Georgia.[4][5] The other populations farther east, all small and isolated, are believed to have originated from human introductions.
Its typical natural habitat is in prairies and open woodlands.[2][3]
Taxonomy
Two varieties are recognized:[4][2]
- Rudbeckia grandiflora var. alismifolia - Stems glabrous or sparsely pubescent, with hairs ascending a less than 0.5 mm
- Rudbeckia grandiflora var. grandiflora - Stems with regular spreading hairs over 1 mm
References
- USDA, NRCS (n.d.). "Rudbeckia grandiflora". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 24 January 2019.
- Rudbeckia grandiflora Flora of North America
- Diggs, George; Lipscomb, Barney; O'Kennon, Robert (1999). Flora of North Central Texas. Botanical Research Institute of Texas. p. 402.
- Alan Weakley (2015). "Flora of the Southern and Mid-Atlantic States".
- "Rudbeckia grandiflora". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Retrieved 24 January 2019.
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