Rudbeckia fulgida
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Rudbeckia fulgida, the orange coneflower[1] or perennial coneflower,[2] is a species of flowering plant in the family Asteraceae, native to eastern North America.
Description
It is an herbaceous perennial growing up to Script error: No such module "convert". tall, with bright yellow daisy-like composite flower heads.Script error: No such module "Unsubst".
Growth and reproduction
Rudbeckia fulgida spreads by both stoloniferous stems and seed. The seeds are produced in fruits called cypselae, which are Script error: No such module "convert". long and have short coroniform pappi Script error: No such module "convert". long.[3]
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Morphology
Etymology
The Latin specific epithet fulgida means "shining" or "glistening".[4]
The plant is a source of fulgidic acid named after it.
Cultivation
There are seven varieties;
- Rudbeckia fulgida var. deamii (S. F. Blake) Perdue - Deam's coneflower
- Rudbeckia fulgida var. fulgida Aiton - orange coneflower
- Rudbeckia fulgida var. palustris (Eggert ex C.L. Boynt. & Beadle) Perdue - orange coneflower, prairie coneflower
- Rudbeckia fulgida var. spathulata (Michx.) Perdue - orange coneflower
- Rudbeckia fulgida var. speciosa (Wender.) Perdue - orange coneflower
- Rudbeckia fulgida var. sullivantii (C.L. Boynt. & Beadle) Cronquist - Sullivant's coneflower
- Rudbeckia fulgida var. umbrosa (C.L. Boynt. & Beadle) Cronquist - orange coneflower
Rudbeckia fulgida var. deamii[6] and R. fulgida var. sullivantii 'Goldsturm'[7] have both gained the Royal Horticultural Society's Award of Garden Merit.[8]
Vernalization is beneficial to flower initiation. Recommendations are listed below:
- 'Goldsturm' - 10–12 weeks at Script error: No such module "convert". [9][10]
- 'Little Goldstar' - 10 weeks below Script error: No such module "convert". [11][12]
- 'Pot of Gold' - 10 weeks at Script error: No such module "convert". [13]
References
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- ↑ Template:BSBI 2007
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- ↑ ITIS Report: Rudbeckia fulgida Aiton
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