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Comments ( الإنجليزية )

المقدمة من eFloras
Symphyotrichum georgianum is disjunct and rare in southwestern Georgia and Leon County, Florida.
ترخيص
cc-by-nc-sa-3.0
حقوق النشر
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
الاقتباس الببليوغرافي
Flora of North America Vol. 20: 470, 483, 490, 491 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
المصدر
Flora of North America @ eFloras.org
محرر
Flora of North America Editorial Committee
المشروع
eFloras.org
النص الأصلي
زيارة المصدر
موقع الشريك
eFloras

Description ( الإنجليزية )

المقدمة من eFloras
Perennials, 50–100 cm, colonial; rhizomatous, woody. Stems 1–5+, erect, straight (± stout, light to dark brown), proximally sparsely to moderately short-strigose, distally densely so, stipitate-glandular. Leaves (dark green) thick, firm, margins revolute (sometimes ± undulate), scabrous; basal early deciduous, sessile or subpetiolate, blades spatulate to obovate [size unknown], bases cuneate, margins entire to ± serrate, apices acute, faces finely scabrous; proximal cauline withering by flowering, sessile, blades (adaxially obscurely veined) oblong to lanceolate or narrowly obovate to oblanceolate, proximalmost ± pandurate, 20–70 × 10–20 mm, gradually reduced distally, bases auriculate-clasping, margins entire, finely scabrous, faces finely scabrous, stipitate-glandular; distal sessile, blades lanceolate to oblanceolate, 14–50 × 6–11 mm, reduced distally (much smaller on branches and grading ± abruptly into bracts), bases ± auriculate-clasping to subclasping, margins entire, apices mucronate to white-spinulose, faces scabrous, sometimes sparsely to moderately stipitate-glandular. Heads in narrow, racemiform to ± broad, paniculiform arrays, sometimes borne singly on branches, branches initially patent then ascending, leafy. Peduncles densely short-strigose, ± densely short-stipitate-glandular, bracts 1–8+, spreading to reflexed, linear to narrowly oblong-lanceolate, strigillose, stipitate-glandular, grading into phyllaries. Involucres campanulate to hemispheric, 8–10 mm. Phyllaries in 4–7 series, spatulate-oblong to lanceolate, unequal, innermost linear-lanceolate, bases tan, ± indurate in proximal 1 / 3 – 1 / 2 , margins hyaline, not (outer) to narrowly scarious, strigoso- or hispido-ciliate, sometimes also stipitate-glandular (foliaceous apices), green zones lanceolate-spatulate, covering distal 1 / 2 or less, foliaceous apically, apices acute (outer) to acuminate or ± caudate (inner), spreading or reflexed (longer, inner), often purplish, faces moderately strigillose, stipitate-glandular. Ray florets 12–24; corollas lavender violet to dark reddish purple, laminae 14–24 × 1.5–3.5 mm. Disc florets 20–40; corollas white with purplish lobes, 7–9 mm, throats cylindro-funnelform (sparsely pilose), lobes narrowly triangular, 0.7–1.5 mm (sparsely glandular). Cypselae gray-brown, narrowly obovoid, compressed, 2.5–4 mm, 7–10-nerved, faces sparsely strigose; pappi tan to tawny, 9–11 mm. 2n = 50.
ترخيص
cc-by-nc-sa-3.0
حقوق النشر
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
الاقتباس الببليوغرافي
Flora of North America Vol. 20: 470, 483, 490, 491 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
المصدر
Flora of North America @ eFloras.org
محرر
Flora of North America Editorial Committee
المشروع
eFloras.org
النص الأصلي
زيارة المصدر
موقع الشريك
eFloras

Synonym ( الإنجليزية )

المقدمة من eFloras
Aster georgianus Alexander in J. K. Small, Man. S.E. Fl., 1381, 1509. 1933; A. patens Aiton var. georgianus (Alexander) Cronquist; Virgulus georgianus (Alexander) Semple; V. patens (Aiton) Reveal & Keener var. georgianus (Alexander) Reveal & Keener
ترخيص
cc-by-nc-sa-3.0
حقوق النشر
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
الاقتباس الببليوغرافي
Flora of North America Vol. 20: 470, 483, 490, 491 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
المصدر
Flora of North America @ eFloras.org
محرر
Flora of North America Editorial Committee
المشروع
eFloras.org
النص الأصلي
زيارة المصدر
موقع الشريك
eFloras

Symphyotrichum georgianum ( الإنجليزية )

المقدمة من wikipedia EN

Symphyotrichum georgianum (formerly Aster georgianus) is a rare species of flowering plant in the Asteraceae, the aster family. Its common name is Georgia aster.[3] It is native to the southeastern United States where it is known from Alabama, Florida, Georgia, North Carolina, and South Carolina. As of 2013, it may be extirpated from the state of Florida.

Description

Georgia aster is a robust rhizomatous perennial and herbaceous plant that produces colonies of woody stems up to 1 meter (3 feet 3 inches) tall. The thick, dark green leaves are up to 7 centimeters (2+34 inches) long by 2 cm (45 in) wide. They are oblong to lance-shaped with smooth or serrated margins. The flower heads are borne on rough-haired peduncles. The bracts are linear to lance-shaped.[4] The stems, leaves, and some parts of the flower heads are covered with tiny glands on tiny stalks called "stipitate glands". The flower heads are relatively large, up to 5–6 cm (2–2+38 in) across. Each ray floret is up to 2 cm (45 in) long and purple, described as "dark purple"[5] to "lavender violet to dark reddish purple". The disk florets at the center are white to purplish.[4] It blooms in October and November.[5]

Distribution and habitat

Symphyotrichum georgianum is native to the southeastern United States where it is known from Alabama, Florida, Georgia, North Carolina, and South Carolina.[4] As of 2013, it may be extirpated from the state of Florida.[5]

It grows in oak-pine woodlands.[4][5] Its local region was once covered in a post oak-savanna, and this species was a member of this ecosystem. This type of plant community depends on natural disturbance, such as wildfire, now largely destroyed or degraded by fire suppression and the removal of certain large grazing mammals.[1][5] Georgia aster is therefore a relict species of this historic ecosystem and grows in remaining woodlands.[5]

Conservation

Threats to the survival of the species include elimination of habitat disturbance such as fire, road construction, and herbicide application. As of 2013, only 146 populations were estimated to remain.[5]

Gallery

Citations

References

ترخيص
cc-by-sa-3.0
حقوق النشر
Wikipedia authors and editors
النص الأصلي
زيارة المصدر
موقع الشريك
wikipedia EN

Symphyotrichum georgianum: Brief Summary ( الإنجليزية )

المقدمة من wikipedia EN

Symphyotrichum georgianum (formerly Aster georgianus) is a rare species of flowering plant in the Asteraceae, the aster family. Its common name is Georgia aster. It is native to the southeastern United States where it is known from Alabama, Florida, Georgia, North Carolina, and South Carolina. As of 2013, it may be extirpated from the state of Florida.

ترخيص
cc-by-sa-3.0
حقوق النشر
Wikipedia authors and editors
النص الأصلي
زيارة المصدر
موقع الشريك
wikipedia EN