dcsimg

Associations

provided by BioImages, the virtual fieldguide, UK
Foodplant / parasite
mostly hypophyllous, subepidermal telium of Melampsora epitea parasitises live leaf of Salix lapponum

In Great Britain and/or Ireland:
Foodplant / gall
larva of Pontania dolichura causes gall of leaf (upperside) of Salix lapponum
Other: minor host/prey

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Salix lapponum

provided by wikipedia EN

Salix lapponum, the downy willow,[1][2] is a low, much-branched shrub having a wide distribution in Northern Europe, eastwards to the Altai and western Siberia, and is found as far south as the Pyrenees and Bulgaria. In Scotland, UK, it can be found on rocky mountain slopes and cliffs, generally at altitudes of 200–900 m (660–2,950 ft).[3] It grows to a height of 1.5 m (4.9 ft).

As described in Stace[4] and BSBI[3] Salix lapponum has the following characteristics:

  • Twigs hairy at first, hairless and rather glossy dark reddish brown later.
  • Leaves usually lanceolate to 7 cm long by 2.5 cm wide; slightly hairy to hairy on upper side; usually densely hairy on lower side; margins entire or subentire, sometimes a little undulate.
  • Petiole short, occasionally up to 1 cm long but usually less than 5mm.

References

  1. ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  2. ^ USDA, NRCS (n.d.). "Salix lapponum". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 1 February 2016.
  3. ^ a b Willows and Poplars of Great Britain and Ireland, BSBI Handbook No. 4; Meikle; 1984.
  4. ^ New Flora of the British Isles; Clive Stace; Third edition; 2011 printing.

Media related to Salix lapponum at Wikimedia Commons

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Salix lapponum: Brief Summary

provided by wikipedia EN

Salix lapponum, the downy willow, is a low, much-branched shrub having a wide distribution in Northern Europe, eastwards to the Altai and western Siberia, and is found as far south as the Pyrenees and Bulgaria. In Scotland, UK, it can be found on rocky mountain slopes and cliffs, generally at altitudes of 200–900 m (660–2,950 ft). It grows to a height of 1.5 m (4.9 ft).

As described in Stace and BSBI Salix lapponum has the following characteristics:

Twigs hairy at first, hairless and rather glossy dark reddish brown later. Leaves usually lanceolate to 7 cm long by 2.5 cm wide; slightly hairy to hairy on upper side; usually densely hairy on lower side; margins entire or subentire, sometimes a little undulate. Petiole short, occasionally up to 1 cm long but usually less than 5mm. Upper surface of leaf

Upper surface of leaf

Lower surface of leaf

Lower surface of leaf

View showing twig and leaf petioles

View showing twig and leaf petioles

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Wikipedia authors and editors
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visit source
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wikipedia EN