Molecular Biology and Genetics

Molecular Biology

Barcode data: Polystichum setiferum

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Polystichum setiferum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 2
Species With Barcodes: 1
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Polystichum setiferum

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

Distribution[edit]

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[edit]

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[edit]

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.[1] The species[2] and the cultivar 'Divisilobum Iveryanum'[3]' have both gained the Royal Horticultural Society's Award of Garden Merit.

Notes[edit]

Further reading[edit]

  • Flora Europaea: Polystichum setiferum
  • Hyde, H. A., Wade, A. E., & Harrison, S. G. (1978). Welsh Ferns. National Museum of Wales.
  • Rickard, Martin (2000). The Plantfinder's Guide to Garden Ferns. David & Charles
  • Dyce, J. W. (2005). Polystichum Cultivars: Variation in the British Shield Ferns. British Pteridological Society
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