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Comments

provided by eFloras
Rudbeckia maxima was introduced in South Carolina and possibly elsewhere through horticultural and agricultural activities. It is a cultivated ornamental and is sometimes a problematic pasture weed.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 43, 47, 50 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Description

provided by eFloras
Perennials, to 250 cm (rhizomatous, roots fibrous). Leaves bluish green (heavily glaucous, dried blades white under UV light, at least abaxially), blades elliptic, ovate to obovate or pandurate (not lobed), leathery, margins crenate, dentate, or entire, apices acute to rounded, faces glabrous; basal petiolate, elliptic to ovate, 15–65 × 4–15 cm, bases attenuate to cuneate; cauline petiolate or sessile, 7–50 × 4–14 cm, blades ovate to pandurate, bases cuneate to auriculate (and clasping). Heads borne singly or (3–15) in ± corymbiform arrays. Phyllaries to 1.5 cm (ovate to lanceolate, margins ciliate). Receptacles ovoid to conic; paleae 6–8 mm, apices mostly rounded, abaxial tips glabrous (hairy subapically). Ray florets 10–20; laminae elliptic to oblanceolate, 30–80 × 8–15 mm, abaxially sparsely hairy. Discs 40–80 × 15–35 mm. Disc florets 300–600+; corollas maroon (at least distally), 4–6 mm; style branches ca. 2.2 mm, apices acute. Cypselae 6.5–7 mm; pappi of 4–6 scales to 1.5 mm. 2n = 36.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 43, 47, 50 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Rudbeckia maxima

provided by wikipedia EN

Rudbeckia maxima, the great coneflower,[1] is a flowering plant in the family Asteraceae, which is used as an ornamental plant. They can reach a maximum height of eight feet. Once it produces seeds, finches and other small birds come to feed on them.

Rudbeckia maxima

References

  1. ^ USDA, NRCS (n.d.). "Rudbeckia maxima". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 25 October 2015.
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Rudbeckia maxima: Brief Summary

provided by wikipedia EN

Rudbeckia maxima, the great coneflower, is a flowering plant in the family Asteraceae, which is used as an ornamental plant. They can reach a maximum height of eight feet. Once it produces seeds, finches and other small birds come to feed on them.

Rudbeckia maxima
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cc-by-sa-3.0
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Wikipedia authors and editors
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wikipedia EN