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Merlin's Grass

Isoetes tegetiformans P. M. Rury

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provided by eFloras
Isoëtes tegetiformans is a unique mat-forming quillwort distinguished by its distichous leaf arrangement, horizontally elongate rootstock, and nondichotomous roots. (See discussion under I. melanospora.)
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description

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Plants becoming terrestrial. Rootstock horizontally elongate, mat-forming, often proliferous. Leaves deciduous to nearly evergreen, bright green, pale toward base, distichously arranged, to 4 cm, pliant, gradually tapering to tip. Velum covering entire sporangium. Sporangium wall unpigmented. Megaspores dark gray, 275--370 μm diam., tuberculate with low and distinct tubercules; girdle obscure. Microspores brown in mass, 26--33 μm, spinulose. 2n = 22.
license
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. 2 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
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eFloras

Habitat & Distribution

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Spores mature late winter and spring. Shallow pools on granite outcrops; of conservation concern; Ga.
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copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 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
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eFloras

Isoetes tegetiformans

provided by wikipedia EN

Isoetes tegetiformans, commonly known as mat-forming quillwort or mat-forming Merlin's grass, is an aquatic lycophyte endemic to the U.S. state of Georgia. It grows exclusively in shallow, temporary pools on granite outcrops, often with only 2 cm of soil. Only 7 populations are known to exist, and three of these have been destroyed since the plant's discovery in 1976. The remaining populations are threatened with habitat destruction due to quarrying, though the species is protected under the U.S. Endangered Species Act. New leaves quickly sprout after fall and winter rains, but during the dry summer months these typically shrivel.[1][2]

References

  1. ^ a b "Isoetes tegetiformans". NatureServe Explorer. NatureServe. Retrieved 2008-01-25.
  2. ^ Taylor, W. Carl; Luebke, Neil T.; Britton, Donald M.; Hickey, R. James; Brunton, Daniel F. (1993). "Isoetes tegetiformans". In Flora of North America Editorial Committee, eds. 1993+ (ed.). Flora of North America. Vol. 2. New York & Oxford: Oxford University Press.

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Isoetes tegetiformans: Brief Summary

provided by wikipedia EN

Isoetes tegetiformans, commonly known as mat-forming quillwort or mat-forming Merlin's grass, is an aquatic lycophyte endemic to the U.S. state of Georgia. It grows exclusively in shallow, temporary pools on granite outcrops, often with only 2 cm of soil. Only 7 populations are known to exist, and three of these have been destroyed since the plant's discovery in 1976. The remaining populations are threatened with habitat destruction due to quarrying, though the species is protected under the U.S. Endangered Species Act. New leaves quickly sprout after fall and winter rains, but during the dry summer months these typically shrivel.

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Isoetes tegetiformans ( Icelandic )

provided by wikipedia IS

Isoetes tegetiformans[2] er tegund af álftalaukum[3] sem var lýst af P. M. Rury. Hún er einlend í Georgíu í Bandaríkjunum.

Tilvísanir

  1. „Isoetes tegetiformans“. NatureServe Explorer. NatureServe. Sótt 25. janúar 2008.
  2. P. M. Rury, 1978 In: Amer. Fern J. 68(4): 100
  3. Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2014). „Species 2000 & ITIS Catalogue of Life: 2014 Annual Checklist“. Species 2000: Reading, UK. Sótt 26. maí 2014.

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Höfundar og ritstjórar Wikipedia
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Isoetes tegetiformans: Brief Summary ( Icelandic )

provided by wikipedia IS

Isoetes tegetiformans er tegund af álftalaukum sem var lýst af P. M. Rury. Hún er einlend í Georgíu í Bandaríkjunum.

Mat forming quillwort isoetes tegetiformans.jpg Isoetes underwater (5571759247).jpg Mat-forming quillwort (Isoetes tegetiformans).JPG
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Isoetes tegetiformans ( Vietnamese )

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Isoetes tegetiformans là một loài dương xỉ trong họ Isoetaceae. Loài này được Rury mô tả khoa học đầu tiên năm 1978.[2]

Hình ảnh

Chú thích

  1. ^ “Isoetes tegetiformans”. NatureServe Explorer. NatureServe. Truy cập ngày 25 tháng 1 năm 2008.
  2. ^ The Plant List (2010). Isoetes tegetiformans. Truy cập ngày 28 tháng 5 năm 2014.

Liên kết ngoài


Bài viết liên quan đến bộ dương xỉ Isoetales 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 tác giả và biên tập viên
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wikipedia VI

Isoetes tegetiformans: Brief Summary ( Vietnamese )

provided by wikipedia VI

Isoetes tegetiformans là một loài dương xỉ trong họ Isoetaceae. Loài này được Rury mô tả khoa học đầu tiên năm 1978.

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