Philippe Clement / Balsam poplar / Black cottonwood trees {Populus balsamifera} in autumn colours, Denali NP, Alaska, USA
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Juan Manuel Borrero / Seeds of Black poplar tree (Populus nigra) Spain
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Will Watson / Pollarded Black poplar tree {Populus nigra betulifolia} with catkins, Worcs, England
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Tony Evans / Black poplar tree silhouette {Populus nigra var betulifolia} UK
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Tony Evans / Black poplar tree silhouette {Populus nigra var betulifolia} UK
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Andres M. Dominguez / Catkins on Cottonwood (Populus nigra) tree, Grazalema, Southern Spain. March.
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Will Watson / Black poplar (Populus nigra ssp. betulifolia) canopy, a rare species in the UK, veteran tree, Clifford, Herefordshire, England, UK. July.
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Will Watson / Canopy of veteran Black poplar tree (Populus nigra ssp. betulifolia), Blakemere, Herefordshire, England, UK. May, 2021.
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Fabrice Cahez / Catkins on Cottonwood (Populus nigra) Loire, France, April.
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Nigel Cattlin / Poplar rust (Melampsora sp) disease pustules on underside of White poplar (Populus alba) leaf.
