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Comments ( anglais )

fourni par eFloras
Eurybia compacta may be extirpated from much of its original range (Georgia, Maryland, South Carolina, Virginia) and may now be of conservation concern. It is present on the Atlantic coastal plains and outer Piedmont. A. Cronquist (1980) stated that it approaches E. surculosa on one hand, and E. avita and E. paludosa on the other. This reflects the close affinity between sections Calliastrum and Heleastrum (see above). I have seen no voucher for the Alabama report.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of North America Vol. 20: 367, 369,  377, 378 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 ( anglais )

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Plants 15–50(–70) cm, in clumps, eglandular; caudices thickened, woody, ovoid to spheric. Stems 1–8+, erect, simple, strict, glabrescent, usually ± densely villous distally. Leaves basal and cauline, thick, firm (only midnerves conspicuous), margins entire or nearly so, indurate, scabrous, apices indurate, mucronate, faces scabrous (especially distal) to sometimes glabrous, adaxial sometimes villous (especially proximal) at least along midnerves; basal often withering by flowering (bases sometimes marcescent), petioles erect, longer than blades, bases sheathing, winged, ciliate, blades narrowly elliptic to ovate or obovate, 20–70 × 8–20 mm, bases cuneate, margins sometimes crenulate-serrulate, teeth mucronate, apices obtuse to rounded; cauline usually sessile, sometimes subsessile (ascending), lanceolate to oblanceolate, 15–80(–90) × 2.5–12 mm, bases sheathing to auriculate-clasping (distal), apices acute. Heads 3–55+ in flat-topped, corymbiform arrays, branches ascending, slender. Peduncles slender, villous; bracts 1–2, often 1 near heads, leaflike (bases sometimes indurate and white as in phyllaries). Involucres cylindro-campanulate, 6.5–9 mm, slightly shorter than pappi. Phyllaries 24–35 in 4–5 series, oblong (outer) to lanceolate (inner), unequal, coriaceous (outer) to membranous (inner), bases indurate, rounded (outer), margins hyaline, narrowly scarious, ± erose, ciliate (outer), apices reflexed, green (except innermost), purple-margined, less scarious, rounded or obtuse (outer) to acuminate (inner), mucronate, abaxial faces glabrous or obscurely puberulent, eglandular. Ray florets (5–)8–14; corollas blue-violet to rose-purple or bluish, often pale, 5–8(–10) × 1–1.8 mm. Disc florets 10–20; corollas pale yellow, 5.5–6.2 mm, not ampliate, tubes longer than narrowly funnelform throats, lobes triangular, 0.65–0.9 mm. Cypselae stramineous, cylindro-obconic, 1.75–2.6 mm, ribs 9–12 (crowded), faces glabrate to strigillose; pappi of tawny to cinnamon bristles 5.9–6.2 mm, equaling disc corollas. 2n = 18.
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cc-by-nc-sa-3.0
droit d’auteur
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of North America Vol. 20: 367, 369,  377, 378 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
rédacteur
Flora of North America Editorial Committee
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eFloras.org
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eFloras

Synonym ( anglais )

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Aster gracilis Nuttall, Gen. N. Amer. Pl. 2: 158. 1818, not Eurybia gracilis Bentham 1837; Aster surculosus Michaux var. gracilis (Nuttall) A. Gray
licence
cc-by-nc-sa-3.0
droit d’auteur
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of North America Vol. 20: 367, 369,  377, 378 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
rédacteur
Flora of North America Editorial Committee
projet
eFloras.org
original
visiter la source
site partenaire
eFloras

Eurybia compacta ( anglais )

fourni par wikipedia EN

Eurybia compacta, commonly known as the slender aster, is an herbaceous perennial native to the eastern United States from New Jersey to Georgia.[3] It is commonly found along the coastal plain in dry sandy soils, especially in pinelands. While it is not considered to be in high danger of extinction, it is of conservation concern and has most likely been extirpated from much of its original range. The slender aster was for a long time considered to be a variety of E. surculosa, but Guy Nesom's recent research within the genus has shown that it is distinct enough to be treated as a species. It has also been shown to be related to E. avita and E. paludosa.

Eurybia compacta is a perennial up to 70 cm (28 inches) tall, the stem becoming woody with age. The flowers emerge from midsummer to the beginning of fall, with as many as 55 flower heads in a flat-topped array. Each head contains 5-14 pale blue, light violet or reddish purple ray florets surrounding 10-20 pale yellow disc florets.[4]

Taxonomy

The first name applied to the slender aster was Aster gracilis, which was given by Thomas Nuttall in 1818.[5] Asa Gray later decided that it was better treated as a variety of Aster surculosus.[6] When Guy Nesom[7] decided to transfer many of the North American plants within the genus Aster to Eurybia, the plant needed to receive a new name as a Eurybia gracilis had already been used for an Australian species named by George Bentham in 1837, and now called Camptacra gracilis.[1][4]

References

  1. ^ a b "Eurybia compacta". NatureServe Explorer. NatureServe. Archived from the original on 2007-09-29. Retrieved 2007-06-13.
  2. ^ "Eurybia compacta G.L. Nesom". Tropicos. Missouri Botanical Garden.
  3. ^ "Eurybia compacta". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
  4. ^ a b Brouillet, Luc (2006). "Eurybia compacta". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 20. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  5. ^ Nuttall, Thomas. 1818. Genera of North American Plants 2: 158
  6. ^ Gray, Asa. 1856. Manual of the Botany of the Northern United States. Second Edition, page 191
  7. ^ Nesom, Guy L. 1995. Phytologia 77(3): 259
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Eurybia compacta: Brief Summary ( anglais )

fourni par wikipedia EN

Eurybia compacta, commonly known as the slender aster, is an herbaceous perennial native to the eastern United States from New Jersey to Georgia. It is commonly found along the coastal plain in dry sandy soils, especially in pinelands. While it is not considered to be in high danger of extinction, it is of conservation concern and has most likely been extirpated from much of its original range. The slender aster was for a long time considered to be a variety of E. surculosa, but Guy Nesom's recent research within the genus has shown that it is distinct enough to be treated as a species. It has also been shown to be related to E. avita and E. paludosa.

Eurybia compacta is a perennial up to 70 cm (28 inches) tall, the stem becoming woody with age. The flowers emerge from midsummer to the beginning of fall, with as many as 55 flower heads in a flat-topped array. Each head contains 5-14 pale blue, light violet or reddish purple ray florets surrounding 10-20 pale yellow disc florets.

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Eurybia compacta ( vietnamien )

fourni par wikipedia VI

Eurybia compacta là một loài thực vật có hoa trong họ Cúc. Loài này được G.L.Nesom mô tả khoa học đầu tiên năm 1995.[1]

Chú thích

  1. ^ The Plant List (2010). Eurybia compacta. 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 Eurybia compacta  src= Wikispecies có thông tin sinh học về Eurybia compacta


Bài viết về chủ đề Phân họ Cúc này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
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wikipedia VI

Eurybia compacta: Brief Summary ( vietnamien )

fourni par wikipedia VI

Eurybia compacta là một loài thực vật có hoa trong họ Cúc. Loài này được G.L.Nesom mô tả khoa học đầu tiên năm 1995.

licence
cc-by-sa-3.0
droit d’auteur
Wikipedia tác giả và biên tập viên
original
visiter la source
site partenaire
wikipedia VI