Nigel Cattlin / Common knotgrass (Polygonum aviculare) growing as arable weed. England, UK. August.
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Nick Upton / Knotgrass (Polygonum aviculare) flowering in damp grassland, Cornwall, UK, September.
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Konstantin Mikhailov / {Polygonum aviculare} flowering, Lake Baikal, Siberia, Russia
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Nigel Cattlin / Prostrate knotgrass (Polygonum aviculare) plants growing in a young Sugar beet (Beta vulgaris) crop, England, UK. June
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Paul Harcourt Davies / Alpine bistort ( (Polygonum aviculare). Col di Rodlea, Campitello di Fassa, Dolomites, Trentino, Italy. June.
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Paul Harcourt Davies / Alpine bistort ( (Polygonum aviculare). Col di Rodlea, Campitello di Fassa, Dolomites, Trentino, Italy. July.
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Linda Pitkin / Knotgrass (Polygonum aviculare) Ranscombe Farm Nature Reserve, Kent, England, July.
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Nigel Cattlin / Severe infestation of several broad-leaved weed species in a young wheat crop, Cambridgeshire, England, UK,
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Kim Taylor / Redpoll (Carduelis flammea) male landing on Alder (Alnus glutinosa) Surrey, England. February
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Ross Hoddinott / Common alder (Alnus glutinosa) catkins silhouetted. Cornwall. UK
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David Woodfall / European Beaver (Castor fiber) underneath Alder (Alnus glutinosa) eaten to a point. Bevis Trust, Carmarthenshire, Wales, UK, June.
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David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.
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David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.
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David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.
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David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.
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Ernie Janes / Low angle view of Alder trees (Alnus glutinosa) in winter, Norfolk, England, UK, December.
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Stephen Dalton / Man coppicing Alder (Alnus glutinosa) growth on island in pond Rookery Wood, Sussex, England, UK, November 2016.
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Colin Varndell / Common alder (Alnus glutinosa) male catkins in early spring, Dorset, UK, March.
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SCOTLAND: The Big Picture / Alder (Alnus glutinosa) trees in winter, covered in lichen, Glen Cannich, Scotland, UK, January.
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Nick Upton / Mixed species woodland with ancient beech woods (Fagus sylvatica) in drier areas and Alder carr (Alnus glutinosa) in damp/wet depressions, Grumsin Forest UNESCO World Natural Heritage Site, Schorfheid...
