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fornecido por eFloras
Amaranthus pumilus is a globally and federally threatened species (Global Heritage Status Rank G2; National Heritage Status Rank N2) originally restricted to dunes and barrier island beaches along the Atlantic Ocean from southern Massachusetts to South Carolina. It has been eliminated from two-thirds of its former range, being last reported from Massachusetts in 1849, from Rhode Island in 1856, from New Jersey in 1913, and from Virginia in 1972 (S. Ramsey et al. 2000). As of fall 2003, extant populations are known only from Long Island, New York, Delaware, Maryland, North Carolina, and South Carolia. Many threats exist, including construction of sea walls and dune fencing, development, heavy recreational use, and off-road vehicle traffic. It is difficult to afford protection because of the dynamic nature of the habitat and the fugitive nature of the biology of the species. "Fugitive" refers to the fact that the species does not necessarily occur throughout its potential range at any given time (S. E. Clemants 1992).
Amaranthus pumilus is in the Center for Plant Conservation’s National Collection of Endangered Plants.
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Description
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Inglês
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fornecido por eFloras
Plants annual, glabrous. Stems prostrate to ascending (often forming mats), red, much-branched, 0.1-0.4(-0.5) m, fleshy. Leaves clustered near tips of branches; petiole 5-10 mm; blade orbiculate, broadly ovate or obovate, 1-1.5 cm × 1-1.5 cm, fleshy, base broadly cuneate to tapering, margin entire, plane or slightly undulate, apex broadly rounded to obtuse, mucronate. Inflorescences dense axillary glomerules, green. Bracts of pistillate flowers ovate or elliptic, 1.2-2 mm, 1/2 as long as tepals. Pistillate flowers: tepals 5, linear to narrowly oblanceolate, slightly unequal, 2.5-4 mm, margins entire, apex obtuse; style branches erect; stigmas 3. Staminate flowers intermixed with pistillate; tepals 5; stamens 5. Utricles ovoid, 4-6 mm, exceeding tepals, fleshy, smooth or slightly rugose, longitudinally wrinkled on drying, indehiscent. Seeds dark reddish brown, lenticular, 2.5 mm diam., glossy.
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Distribution
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Inglês
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fornecido por eFloras
Conn., Del., Md., Mass., N.J., N.Y., N.C., Pa., R.I., S.C., Va.
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Flowering/Fruiting
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fornecido por eFloras
Flowering summer-fall.
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Habitat
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Maritime sand dunes, beaches, mostly on foredunes and at high tide level; of conservation concern; 0-10m.
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Comprehensive Description
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Inglês
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fornecido por North American Flora
Amaranthus pumilus Raf. Med. Repos. II. 5: 360. 1808
Euxolus pumilus Chapm. Fl. S. U. S. 381. 1860.
Stems stout, fleshy, prostrate or ascending, 4-30 cm. long; leaves mostly clustered near the ends of the branches, the petioles stout, 2-1 1 mm. long, the blades obovate to suborbicular, 8-20 mm. long, rounded or emarginate at the apex, rounded to attenuate at the base and decurrent, glabrous, fleshy, prominently veined, the veins often purple; flowers monoecious, in dense axillary clusters; bracts lanceolate, acutish, half as long as the calyx or shorter; sepals of the pistillate flowers 5, narrowly oblong, obtuse, 3-4 mm. long, those of the staminate flowers similar but smaller; stamens 5; style-branches 3; utricle fleshy, indehiscent, oval in outline, about 5 mm. long, faintly 5-ribbed, rugulose; seed 2-2.5 mm. long, black and shining.
Type locality: On an island at Egg Harbor, New Jersey. Distribution: On sea beaches, Rhode Island to North Carolina.
- citação bibliográfica
- Paul Carpenter Standley. 1917. (CHENOPODIALES); AMARANTHACEAE. North American flora. vol 21(2). New York Botanical Garden, New York, NY
Amaranthus pumilus
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Inglês
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fornecido por wikipedia EN
Amaranthus pumilus, the seaside amaranth or seabeach amaranth, is a species of amaranth. This annual plant is now a threatened species, although it was formerly scattered along the eastern coast of the United States, its native range.
History
The seaside amaranth once ranged widely from South Carolina to Massachusetts. It was first identified in New Jersey, but disappeared in that state by 1913. It is now gone from two thirds of its original range.[1] This plant has reappeared on some areas where it was formerly extirpated by habitat loss and recreational activities.
Description
The plant consists of many low and prostrate stems with fleshy leaves. Larger plants with hundreds of stems may cover an area of about a meter. Yellow flowers are obscure, but many seeds are produced in July. The lengthy viability of these seeds may account for the reappearance of Amaranthus pumilus in places where it had formerly vanished.
Habitat
This plant is found on sandy beaches, especially on barrier islands. It flourishes at the base of dunes above the high water mark. Although the seaside amaranth is found in the neighborhood of other beach plants, it is intolerant of all but American sea rocket (Cakile edentula). The plant is important in the sandy beach ecosystem, accumulating sand around itself to form dunes.[4]
Conservation status in the United States
The plant was listed as a threatened species of the United States in 1993.[2][3] There are perhaps 50 populations remaining.[1] It is listed as a special concern and believed extirpated in Connecticut,[5] as threatened in North Carolina, and as endangered in Maryland, New Jersey, New York (state), and Rhode Island.[6] Threats include disturbance of its beach habitat through development, construction of seawalls, off-road vehicle activity, and other forces.[1] Along the North Carolina coast the deposits of tanker oil left on the beach from the ships torpedoed during both world wars is the main cause for the demise of the Sea Beach Amaranth.
References
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Amaranthus pumilus: Brief Summary
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Inglês
)
fornecido por wikipedia EN
Amaranthus pumilus, the seaside amaranth or seabeach amaranth, is a species of amaranth. This annual plant is now a threatened species, although it was formerly scattered along the eastern coast of the United States, its native range.
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- Wikipedia authors and editors
Amaranthus pumilus
(
Espanhol; Castelhano
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fornecido por wikipedia ES
Amaranthus pumilus,Raf., es una especie botánica perteneciente la familia Amaranthaceae. Esta planta anual es ahora una especie amenazada, a pesar de que fue generalizada a lo largo de la costa oriental de los Estados Unidos, su rango nativo.
Descripción
La planta se compone de muchos tallos bajos y postrados con hojas carnosas. Plantas más grandes, con cientos de tallos puede cubrir un área de aproximadamente un metro. Las flores son de color amarillo oscuro, pero muchas semillas se producen en julio. La larga viabilidad de estas semillas puede dar cuenta de la reaparición de Amaranthus pumilus en lugares donde anteriormente había desaparecido.
Hábitat
Esta planta se encuentra en las playas de arena. Que florece en la base de las dunas altas por encima de la marca de agua. A pesar de que esta planta se encuentra junto a otras plantas de la playa, es intolerante, de (Cakile edentula).
Historia
Se distribuyó mucho desde Carolina del Sur a Massachusetts. Se identificó por primera vez en Nueva Jersey, pero ha desaparecido en ese estado desde 1913. Esta planta ha reaparecido en algunas zonas donde se fue extirpada por la pérdida de hábitat y actividades recreativas.
Taxonomía
Amaranthus pumilus fue descrito por Constantine Samuel Rafinesque y publicado en Medical Repository 5: 360. 1808.[1][2]
- Etimología
Amaranthus: nombre genérico que procede del griego amaranthos, que significa "flor que no se marchita".[3]
pumilus: epíteto latino que significa "enano, pequeño".[4]
Referencias
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- Autores y editores de Wikipedia
Amaranthus pumilus: Brief Summary
(
Espanhol; Castelhano
)
fornecido por wikipedia ES
Amaranthus pumilus,Raf., es una especie botánica perteneciente la familia Amaranthaceae. Esta planta anual es ahora una especie amenazada, a pesar de que fue generalizada a lo largo de la costa oriental de los Estados Unidos, su rango nativo.
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Amaranthus pumilus
(
Vietnamita
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fornecido por wikipedia VI
Amaranthus pumilus là loài thực vật có hoa thuộc họ Dền. Loài này được Raf. mô tả khoa học đầu tiên năm 1808.[1]
Tham khảo
Liên kết ngoài
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Amaranthus pumilus: Brief Summary
(
Vietnamita
)
fornecido por wikipedia VI
Amaranthus pumilus là loài thực vật có hoa thuộc họ Dền. Loài này được Raf. mô tả khoa học đầu tiên năm 1808.
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- Wikipedia tác giả và biên tập viên
Bài viết về phân họ Dền này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. 
