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Derivation of specific name

provided by Flora of Zimbabwe
polypodioides: resembling a Polypodium, a fern genus that also have the sori sunk into frond surface
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Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Gleichenia polypodioides (L.) Sm. Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=100410
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
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Flora of Zimbabwe

Description

provided by Flora of Zimbabwe
Rhizome widely creeping, branched, 1-5 mm in diameter; scales dark brown, up to 1 mm long. Fronds spaced 2-20 cm apart, 30-90 cm long. Stipe up to 60 cm long, stiff, wiry, glabrous, shiny. Lamina dichotomously divided, circular in outline. Pinnules pinnatifid with small, 2-3 × 1.5-2 mm, triangular ultimate lobes, glabrous, joined to the costules. Sori embedded in the lobes at the apical side near the costa, creating a raised impression of the sori on the upper surface of the lobe.
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cc-by-nc
copyright
Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Gleichenia polypodioides (L.) Sm. Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=100410
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
original
visit source
partner site
Flora of Zimbabwe

Worldwide distribution

provided by Flora of Zimbabwe
Angola, Burundi, Lesotho, Malawi, Mozambique, South Africa, Swaziland, Tanzania, Zimbabwe. Also Amsterdam Isl., Madagascar, Mauritius, Réunion.
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cc-by-nc
copyright
Mark Hyde, Bart Wursten and Petra Ballings
bibliographic citation
Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Gleichenia polypodioides (L.) Sm. Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=100410
author
Mark Hyde
author
Bart Wursten
author
Petra Ballings
original
visit source
partner site
Flora of Zimbabwe

Gleichenia polypodioides

provided by wikipedia EN

Gleichenia polypodioides (L.) Sm., commonly known as coral fern, kystervaring ('kyster' meaning 'coastal' and of possible Scandinavian derivation) or ystervaring (meaning 'iron fern' in Afrikaans) due to its glabrous, brown, wiry stipes. The species is widespread in south- and east tropical Africa, southern Africa and the western Indian Ocean region. It occurs naturally in a broad coastal belt in South Africa, Lesotho, Eswatini, Angola, Malawi, Burundi, Tanzania, Mozambique, Zimbabwe, Mauritius, Réunion, Amsterdam Island and Madagascar, and was first described by Carl Linnaeus in 1771 under the name Onoclea polypodioides. Often forming dense and impenetrable thickets, sometimes over large areas, this rhizomatous perennial is an important pioneer in disturbed areas such as pine plantations. It is often mistakenly seen as an exotic invader rather than as a useful rehabilitation plant, a source of peat and growing medium,[1][2] while showing exceptional resistance to herbicides.[3]

Rhizome brown, 1–2.5 mm. in diam., creeping, with long-spined dark-brown scales up to 0.5 mm. in diam. (including spines), with fronds spaced 2–20 cm. apart. Stipe castaneous, up to 60 cm. long and up to 1.5 mm. in diam., glabrous or with a few scales similar to those on the rhizome, shallowly sulcate. Frond bifurcate to reniform-lunate in outline, with 1 (rarely 2) level of false dichotomy in each lateral branch system arising from each side of the terminal bud; all branches bearing distant foliar segments. Aborted apical buds up to 1.2 mm. long, clothed in dark-brown lanceolate laciniate scales (sometimes with black spines). Pinnules (foliar segments) linear, up to 7 x 0.75 cm., pinnate, usually glabrous (but sometimes set with brown laciniate scales), divided into sessile rounded entire triangular lobes, 3 x 2 mm., green to glaucous below. Sori partially immersed in the lamina, consisting of 2–4 sporangia, each in a separate but adjoining pit.

— E. A. C. L. E. Schelpe - Flora Zambesiaca
 src=
Fronds covering an earthbank at Bloukrans Pass, South Africa
 src=
Monospecific stand on exposed ridge near Karatara, South Africa

The genus is named after the German botanist W.F. von Gleichen,[4] while "polypodioides" denotes a resemblance to Polypodium which also has sori sunk into the frond surface.[5] Gleichenia polypodioides is one of 12 species in the genus,[6] and occurs on sheltered rocks and slopes, along stream- and earthbanks, on road embankments and other disturbed areas, in cool regions of high rainfall or frequent mist, on sites enjoying full sun or light shade. In the subtropics it occurs at elevations from 1,220 to 1,870 m,[7] but in South Africa it is present near sea level.

Synonyms

  • Calymella polypodioides (L.) Ching
  • Gleichenia argentea Kaulf.
  • Gleichenia glauca Sw.
  • Mertensia caeruleo-glauca Poir.
  • Onoclea polypodioides L.

References

  1. ^ "Peat-producing Fern Exploited and Marketed" - Die Burger
  2. ^ "Fibrous Root Mat ofGleichenia polypodioidesFern: Possible use as a medium for growing plants / Veselrige Wortelmat Van Die VaringGleichenia Polypodioides:Moontlike Gebruik as 'n Medium Om Plante Te Kweek". South African Forestry Journal. 101: 39–46. doi:10.1080/00382167.1977.9629453.
  3. ^ "Chemical Control ofGleichenia PolypodioidesFern and Bracken". South African Forestry Journal. 108: 43–44. doi:10.1080/00382167.1979.9630494.
  4. ^ "Archived copy". Archived from the original on 2015-10-18. Retrieved 2012-12-13.{{cite web}}: CS1 maint: archived copy as title (link)
  5. ^ Southern African Ferns and Fern Allies - JE Burrows (1990)
  6. ^ The Plant List
  7. ^ Flora Zambesiaca, Kew

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Gleichenia polypodioides: Brief Summary

provided by wikipedia EN

Gleichenia polypodioides (L.) Sm., commonly known as coral fern, kystervaring ('kyster' meaning 'coastal' and of possible Scandinavian derivation) or ystervaring (meaning 'iron fern' in Afrikaans) due to its glabrous, brown, wiry stipes. The species is widespread in south- and east tropical Africa, southern Africa and the western Indian Ocean region. It occurs naturally in a broad coastal belt in South Africa, Lesotho, Eswatini, Angola, Malawi, Burundi, Tanzania, Mozambique, Zimbabwe, Mauritius, Réunion, Amsterdam Island and Madagascar, and was first described by Carl Linnaeus in 1771 under the name Onoclea polypodioides. Often forming dense and impenetrable thickets, sometimes over large areas, this rhizomatous perennial is an important pioneer in disturbed areas such as pine plantations. It is often mistakenly seen as an exotic invader rather than as a useful rehabilitation plant, a source of peat and growing medium, while showing exceptional resistance to herbicides.

Rhizome brown, 1–2.5 mm. in diam., creeping, with long-spined dark-brown scales up to 0.5 mm. in diam. (including spines), with fronds spaced 2–20 cm. apart. Stipe castaneous, up to 60 cm. long and up to 1.5 mm. in diam., glabrous or with a few scales similar to those on the rhizome, shallowly sulcate. Frond bifurcate to reniform-lunate in outline, with 1 (rarely 2) level of false dichotomy in each lateral branch system arising from each side of the terminal bud; all branches bearing distant foliar segments. Aborted apical buds up to 1.2 mm. long, clothed in dark-brown lanceolate laciniate scales (sometimes with black spines). Pinnules (foliar segments) linear, up to 7 x 0.75 cm., pinnate, usually glabrous (but sometimes set with brown laciniate scales), divided into sessile rounded entire triangular lobes, 3 x 2 mm., green to glaucous below. Sori partially immersed in the lamina, consisting of 2–4 sporangia, each in a separate but adjoining pit.

— E. A. C. L. E. Schelpe - Flora Zambesiaca  src=Fronds covering an earthbank at Bloukrans Pass, South Africa src=Monospecific stand on exposed ridge near Karatara, South Africa

The genus is named after the German botanist W.F. von Gleichen, while "polypodioides" denotes a resemblance to Polypodium which also has sori sunk into the frond surface. Gleichenia polypodioides is one of 12 species in the genus, and occurs on sheltered rocks and slopes, along stream- and earthbanks, on road embankments and other disturbed areas, in cool regions of high rainfall or frequent mist, on sites enjoying full sun or light shade. In the subtropics it occurs at elevations from 1,220 to 1,870 m, but in South Africa it is present near sea level.

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