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Stokes' Aster

Stokesia laevis (Hill) Greene

Description

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Stems tomentulose, glabrescent. Leaves: basal with petioles 3–12 cm, narrowly winged, blades 8–15 × 1–5 cm; cauline sessile, ± clasping, blades 5–12 × 1–3 cm. Involucres 25–45 × 25–45 mm. Phyllaries: outer 15–35+ mm, foliaceous portions elliptic to spatulate or linear, margins ± spiny, inner oblong to linear, 10–15+ mm, margins mostly entire, tips spiny. Corollas 15–25+ mm (outer) or 12–15+ mm (inner). Cypselae 5–8 mm; pappi 8–12 mm. 2n = 14.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 19: 200, 201, 202 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Synonym

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Carthamus laevis Hill, Hort. Kew., 57, plate 5. 1768
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 19: 200, 201, 202 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
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eFloras

Comprehensive Description

provided by North American Flora
Stokesia laevis (Hill) Greene, Hrythea 1: 3. 1893
Carthamus laevis Hill, Hort. Kew. 57. 1768.
Stokesia cyanea L'Her. Sert. Angl. 17. 1788.
Cartesia centauroides Cass. Bull. Soc. Philom. 1816: 198. 1816.
Stems erect, 3-6 dm. tall, sparingly branched above, cinereous-tomentose, becoming glabrous with age; lower leaf-blades glabrous, narrowly oblanceolate to elliptic, 6-16 cm. long, 1-4 cm. wide, acute, entire, tapering at base into a margined petiole nearly equaling the blade; upper leaf-blades narrowly lanceolate to broadly oblong, acute, entire, or with several prominent, salient, spinose teeth near the base, sessile, glabrous; heads 1-5, 4-6 cm. wide, terminating the branches, subtended by spinulose bracteal leaves 1-3 cm. long; involucre 1-2 cm. high; outer involucral scales broadly ovate at the appressed base, with narrowly lanceolate, foliaceous, mucronate, spinulose-ciliate tips; inner scales appressed; achenes 5 mm. long.
Type locality: Carolina.
Distribution: South Carolina to Florida and Louisiana.
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bibliographic citation
Per Axel, Rydberg. 1922. CARDUALES; AMBROSIACEAE, CARDUACEAE. North American flora. vol 33(1). New York Botanical Garden, New York, NY
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Stokesia laevis

provided by wikipedia EN

Stokesia is a monotypic genus of flowering plants in the daisy family, Asteraceae, containing the single species Stokesia laevis. Common names include Stokes' aster and stokesia.[3][1] The species is native to the southeastern United States.

The flowers appear in the summer and are purple, blue, or white in nature.[2] The plant is cultivated as a garden flower. Several cultivars are available, including the cornflower blue 'Klaus Jelitto', 'Colorwheel', which is white, turning purple over time, and 'Blue Danube', which has a blue flower head with a white center.[4] More unusual cultivars include the pink-flowered 'Rosea' and yellow-flowered 'Mary Gregory'.[5]

Like a few other plants (such as some species of Vernonia), it contains vernolic acid, a vegetable oil with commercial applications.[6]

The genus is named after Jonathan Stokes (1755–1831), English botanist and physician.[2]

References

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Stokesia laevis: Brief Summary

provided by wikipedia EN

Stokesia is a monotypic genus of flowering plants in the daisy family, Asteraceae, containing the single species Stokesia laevis. Common names include Stokes' aster and stokesia. The species is native to the southeastern United States.

The flowers appear in the summer and are purple, blue, or white in nature. The plant is cultivated as a garden flower. Several cultivars are available, including the cornflower blue 'Klaus Jelitto', 'Colorwheel', which is white, turning purple over time, and 'Blue Danube', which has a blue flower head with a white center. More unusual cultivars include the pink-flowered 'Rosea' and yellow-flowered 'Mary Gregory'.

Like a few other plants (such as some species of Vernonia), it contains vernolic acid, a vegetable oil with commercial applications.

The genus is named after Jonathan Stokes (1755–1831), English botanist and physician.

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