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Image of <i>Rudbeckia <i>grandiflora</i></i> var. grandiflora
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Rough Coneflower

Rudbeckia grandiflora (Sw.) Gmel. ex DC.

Description

provided by eFloras
Perennials, to 120 cm (roots fibrous, caudices often woody). Stems proximally glabrous or sparsely hairy (hairs spreading), distally strigose (hairs ascending). Leaves: blades elliptic, lanceolate, or ovate (± conduplicate, not lobed), bases cuneate to rounded, margins entire or remotely serrate, apices acute, faces strigose, abaxially gland-dotted; basal petiolate, 10–35 × 2–11 cm; cauline petiolate (proximal) to nearly sessile (distal), 4–30 × 1.5–9 cm. Heads mostly borne singly. Phyllaries to 15 mm (strigose and gland-dotted). Receptacles hemispheric to ovoid; paleae 5–6.5 mm, (apical margins glabrous) acuminate-cuspidate, awn-tipped, abaxial tips sparsely strigose. Ray florets 12–25; laminae elliptic to obovate (reflexed), 20–50 × 5–10 mm, abaxially hairy and gland-dotted. Discs 10–30 × 15–25 mm. Disc florets 200–800+; corollas greenish yellow basally and in lobes, otherwise maroon, 3.5–5 mm; style branches ca. 1.8 mm, apices obtuse. Cypselae 2–3 mm; pappi coroniform, to 0.5 mm.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 53, 56 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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Synonym

provided by eFloras
Centrocarpha grandiflora Sweet, Brit. Fl. Gard., ser. 2, 1: plate 87. 1831
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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: 53, 56 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 grandiflora

provided by wikipedia EN

Rudbeckia grandiflora, commonly called rough coneflower,[1] is a species of flowering plant in the family Asteraceae.

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

  1. ^ USDA, NRCS (n.d.). "Rudbeckia grandiflora". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 24 January 2019.
  2. ^ a b c Rudbeckia grandiflora Flora of North America
  3. ^ a b Diggs, George; Lipscomb, Barney; O'Kennon, Robert (1999). Flora of North Central Texas. Botanical Research Institute of Texas. p. 402.
  4. ^ a b Alan Weakley (2015). "Flora of the Southern and Mid-Atlantic States".
  5. ^ "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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Rudbeckia grandiflora: Brief Summary

provided by wikipedia EN

Rudbeckia grandiflora, commonly called rough coneflower, is a species of flowering plant in the family Asteraceae.

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Rudbeckia grandiflora ( Vietnamese )

provided by wikipedia VI

Rudbeckia grandiflora là một loài thực vật có hoa trong họ Cúc. Loài này được (Sweet) DC. miêu tả khoa học đầu tiên năm 1836.[1]

Chú thích

  1. ^ The Plant List (2010). Rudbeckia grandiflora. Truy cập ngày 4 tháng 6 năm 2013.

Liên kết ngoài

 src= Wikimedia Commons có thư viện hình ảnh và phương tiện truyền tải về Rudbeckia grandiflora  src= Wikispecies có thông tin sinh học về Rudbeckia grandiflora


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Wikipedia tác giả và biên tập viên
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wikipedia VI

Rudbeckia grandiflora: Brief Summary ( Vietnamese )

provided by wikipedia VI

Rudbeckia grandiflora là một loài thực vật có hoa trong họ Cúc. Loài này được (Sweet) DC. miêu tả khoa học đầu tiên năm 1836.

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cc-by-sa-3.0
copyright
Wikipedia tác giả và biên tập viên
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visit source
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wikipedia VI