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Soft Shield Fern

Polystichum setiferum (Forsk.) Moore ex Woynar

Polystichum setiferum

provided by wikipedia EN

Polystichum setiferum, the soft shield-fern,[1] is an evergreen or semi-evergreen fern native to southern and western Europe.

The Latin specific epithet setiferum means “with bristles”.[2]

Distribution

It is most abundant in Ireland, southwestern Great Britain, western France and northwest Iberia, where it benefits from the combination of mild winters and moist summers, but also occurs more locally north to northern Scotland and east to the Crimea and Turkey; in the Mediterranean it usually grows at high altitudes. It grows in woodlands, often but not always on steep slopes.

Description

The fern's bright green fronds are 30–120 cm (12–47 in) long, usually drooping downslope, with typically 4-10 fronds on a mature plant. The fronds are soft-textured, bipinnate (single-pinnate on small, young plants), with the pinnae opposite on the stalk. Each pinna is 4–14 cm (2–6 in) long, with a large upward-pointing pinnule at the base, and the other pinnules decreasing in size toward the pinna tip; the pinnules have softly bristly tips. Individual fronds live for 9 to 15 months and remain attached to the rhizome after withering. The round sori occupy two rows on either side of the midrib of each pinnule and are covered by a centrally-attached, umbrella-like indusium with fringed edges. They produce light yellow spores.

Cultivation

Polystichum setiferum is frequently cultivated as an ornamental plant for use in gardens. There are many cultivars available: over 300 have been described although most are no longer in cultivation or not considered sufficiently distinct for an individual name.[3] The following cultivars have gained the Royal Horticultural Society’s Award of Garden Merit:-[4]

  • Divisilobum Group[5]
    • ’Divisilobum Densum’[6]
    • ‘Divisilobum Iveryanum’[7]
    • ‘Herrenhausen’[8]
  • Plumosomultilobum Group[9]

References

  1. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
  2. ^ Harrison, Lorraine (2012). RHS Latin for Gardeners. United Kingdom: Mitchell Beazley. ISBN 184533731X.
  3. ^ Rickard 2000, p. 146
  4. ^ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 81. Retrieved 9 May 2018.
  5. ^ "RHS Plantfinder - Polystichum setiferum Divisilobum Group". Retrieved 9 May 2018.
  6. ^ "RHS Plantfinder - Polystichum setiferum (Divisilobum Group) 'Divislobum Densum'". Retrieved 9 May 2018.
  7. ^ "RHS Plantfinder - Polystichum setiferum (Divisilobum Group) 'Divisilobum Iveryanum'". Retrieved 9 May 2018.
  8. ^ "RHS Plantfinder - Polystichum setiferum (Divisilobum Group) kHerrenhausen'". Retrieved 9 May 2018.
  9. ^ "RHS Plantfinder - Polystichum setiferum Plumosomultilobum Group". Retrieved 9 May 2018.

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Polystichum setiferum: Brief Summary

provided by wikipedia EN

Polystichum setiferum, the soft shield-fern, is an evergreen or semi-evergreen fern native to southern and western Europe.

The Latin specific epithet setiferum means “with bristles”.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN