Rudbeckia grandiflora
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| Rudbeckia grandiflora | |
|---|---|
| File:Rudbeckia grandiflora var. alismifolia.jpg | |
| Scientific classification Edit this classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Rudbeckia |
| Species: | R. grandiflora
|
| Binomial name | |
| Rudbeckia grandiflora | |
Rudbeckia grandiflora, commonly called rough coneflower,[1] is a species of flowering plant in the family Asteraceae.
Description
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 further 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
- ↑ NRCS. "Rudbeckia grandiflora". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 24 January 2019.
- ↑ 2.0 2.1 2.2 Rudbeckia grandiflora Flora of North America
- ↑ 3.0 3.1 Diggs, George; Lipscomb, Barney; O'Kennon, Robert (1999). Flora of North Central Texas. Botanical Research Institute of Texas. p. 402.
- ↑ 4.0 4.1 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.
