Comments
(
Inglês
)
fornecido por eFloras
Woodsia obtusa comprises two cytotypes that are treated here as subspecies because they show subtle morphologic and ecological distinctions and tend to have different distributions. Tetraploid populations (subsp. obtusa ) are found throughout the eastern flora, commonly occurring on limestone. The diploid (subsp. occidentalis ) is found near the western edge of the species range, usually on sandstone and granitic substrates. Isozyme studies suggest that subsp. obtusa may have been derived from subsp. occidentalis through autopolyploidy (M. D. Windham 1993). The westernmost collections of Woodsia obtusa (all subsp. occidentalis ) come from the Wichita Mountains of Oklahoma and the Edwards Plateau of Texas. Reports of this species from the trans-Pecos region of western Texas are apparently based on misidentifications.
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Description
(
Inglês
)
fornecido por eFloras
Stems compact to creeping, erect to horizontal, with few to many persistent petiole bases of unequal lengths; scales often uniformly brown but at least some bicolored with dark central stripe and pale brown margins, narrowly lanceolate. Leaves 8--60 × 2.5--12 cm. Petiole light brown or straw-colored when mature, occasionally darker at very base, not articulate above base, relatively brittle and easily shattered. Blade lanceolate to ovate, 2-pinnate to 2-pinnate-pinnatifid proximally, moderately glandular, rarely somewhat viscid; many glandular hairs with thick stalks and distinctly bulbous tips; rachis with glandular hairs and scattered, often hairlike scales. Pinnae ovate-deltate to elliptic, longer than wide, abruptly tapered to a rounded or broadly acute apex, occasionally attenuate; largest pinnae with 5--14 pairs of pinnules; abaxial and adaxial surfaces glandular, lacking nonglandular hairs or scales. Pinnules dentate, sometimes deeply lobed; margins nonlustrous, thin, with occasional glands, lacking cilia or translucent projections. Vein tips usually enlarged to form whitish hydathodes visible adaxially. Indusia of relatively broad, nonfilamentous segments, these multiseriate throughout, composed of ± isodiametric cells, entire or glandular along distal edge, concealed by or slightly surpassing mature sporangia. Spores averaging 35--47 µm.
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Synonym
(
Inglês
)
fornecido por eFloras
Polypodium obtusum Sprengel, Anleit. Kenntn. Gew. 3: 93. 1804; Woodsia perriniana (Sprengel) Hooker & Greville
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Butbladet frynsebregne
(
Dinamarquês
)
fornecido por wikipedia DA
Butbladet frynsebregne (Woodsia obtusa) er en bregneart, der er hjemmehørende i Appalachia og det østlige Nordamerika.[1]
De lave planter (op til 30-40 cm) kan i Danmark findes i haver.[2] Den foretrækker kalkholdig jordbund, men vokser også i pH-neutral jord. Det kan vokse på klippeflader eller i stensamlinger.
Den butbladede frynsebregne kan forveksles med visse arter af bægerbregne-slægten (Cystopteris), men er kendetegnet ved at være mere behåret.
Referencer
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Butbladet frynsebregne: Brief Summary
(
Dinamarquês
)
fornecido por wikipedia DA
Butbladet frynsebregne (Woodsia obtusa) er en bregneart, der er hjemmehørende i Appalachia og det østlige Nordamerika.
De lave planter (op til 30-40 cm) kan i Danmark findes i haver. Den foretrækker kalkholdig jordbund, men vokser også i pH-neutral jord. Det kan vokse på klippeflader eller i stensamlinger.
Den butbladede frynsebregne kan forveksles med visse arter af bægerbregne-slægten (Cystopteris), men er kendetegnet ved at være mere behåret.
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Woodsia obtusa
(
Inglês
)
fornecido por wikipedia EN
Woodsia obtusa, the bluntlobe cliff fern,[2] is a common rock fern of Appalachia and eastern North America. It prefers a calcareous substrate, but also grows in neutral soils. It may grow on rock faces or in scree.
This fern is often confused with various ferns of the genus Cystopteris but is distinguished by its hairy nature.
References
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Woodsia obtusa: Brief Summary
(
Inglês
)
fornecido por wikipedia EN
Woodsia obtusa, the bluntlobe cliff fern, is a common rock fern of Appalachia and eastern North America. It prefers a calcareous substrate, but also grows in neutral soils. It may grow on rock faces or in scree.
This fern is often confused with various ferns of the genus Cystopteris but is distinguished by its hairy nature.
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Woodsia obtusa
(
Espanhol; Castelhano
)
fornecido por wikipedia ES
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Woodsia obtusa: Brief Summary
(
Espanhol; Castelhano
)
fornecido por wikipedia ES
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W. obtusa in its natural habitat
Woodsia obtusa es una especie de helecho de roca perteneciente a la familia Woodsiaceae. Es originaria de Appalachia y el este de Norteamérica.
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Woodsia obtusa
(
Francês
)
fornecido por wikipedia FR
La Woodsie à lobes arrondis, Woodsia obtusa, est une espèce de fougères de la famille des Woodsiaceae.
Liste des sous-espèces et variétés
Selon Catalogue of Life (20 mai 2013)[1] :
- sous-espèce Woodsia obtusa subsp. obtusa
- sous-espèce Woodsia obtusa subsp. occidentalis
Selon Tropicos (20 mai 2013)[2] (Attention liste brute contenant possiblement des synonymes) :
- sous-espèce Woodsia obtusa subsp. obtusa
- sous-espèce Woodsia obtusa subsp. occidentalis Windham
- variété Woodsia obtusa var. glandulosa D.C. Eaton & Faxon
- variété Woodsia obtusa var. lyallii Hook.
- variété Woodsia obtusa var. plummerae (Lemmon) Maxon
Notes et références
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↑ Bánki, O., Roskov, Y., Vandepitte, L., DeWalt, R. E., Remsen, D., Schalk, P., Orrell, T., Keping, M., Miller, J., Aalbu, R., Adlard, R., Adriaenssens, E., Aedo, C., Aescht, E., Akkari, N., Alonso-Zarazaga, M. A., Alvarez, B., Alvarez, F., Anderson, G., et al. (2021). Catalogue of Life Checklist (Version 2021-10-18). Catalogue of Life. https://doi.org/10.48580/d4t2, consulté le 20 mai 2013
-
↑ Tropicos.org. Missouri Botanical Garden., consulté le 20 mai 2013
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Woodsia obtusa: Brief Summary
(
Francês
)
fornecido por wikipedia FR
La Woodsie à lobes arrondis, Woodsia obtusa, est une espèce de fougères de la famille des Woodsiaceae.
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Woodsia obtusa
(
Vietnamita
)
fornecido por wikipedia VI
Woodsia obtusa là một loài thực vật có mạch trong họ Woodsiaceae. Loài này được Torr. miêu tả khoa học đầu tiên năm 1840.[1]
Hình ảnh
Chú thích
Liên kết ngoài
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Woodsia obtusa: Brief Summary
(
Vietnamita
)
fornecido por wikipedia VI
Woodsia obtusa là một loài thực vật có mạch trong họ Woodsiaceae. Loài này được Torr. miêu tả khoa học đầu tiên năm 1840.
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