Populus × canescens
Populus <templatestyles src="Noitalic/styles.css"/>× canescens | |
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File:20120827Pappel Saarbruecken.jpg | |
Scientific classification ![]() |
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Kingdom: | Plantae |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Malpighiales |
Family: | Salicaceae |
Genus: | Populus |
Species: |
P. <templatestyles src="Noitalic/styles.css"/>× canescens
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Binomial name | |
Populus <templatestyles src="Noitalic/styles.css"/>× canescens (Aiton) Sm.[1]
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Synonyms[1] | |
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Populus × canescens, the grey poplar, is a hybrid between Populus alba (white poplar) and Populus tremula (common aspen). It is intermediate between its parents, with a thin grey downy coating on the leaves, which are also much less deeply lobed than the leaves of P. albus. It is a very vigorous tree with marked hybrid vigour, reaching 40 m tall and with a trunk diameter over 1.5 m – much larger than either of its parents. Most trees in cultivation are male, but female trees occur naturally and some of these are also propagated.[2]
Taxonomy
In 1789 William Aiton described the grey poplar as a variety of Populus alba, P. alba var. canescens.[3] In 1804, James Edward Smith raised it to a full species, Populus canescens.[1] He described differences between the leaves of the two taxa: P. alba has lobed leaves with snow-white ("niveus") undersides, whereas P. canescens has wavy-edged leaves with hoary ("incanus") undersides.[4] Later authors sometimes noted the possibility that the grey poplar was a hybrid.[5] It is now considered to be a hybrid between Populus alba and Populus tremula,[6] so the scientific name is written with the hybrid symbol.
References
- ↑ 1.0 1.1 1.2 Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ Lua error in package.lua at line 80: module 'strict' not found., pp. 1079–1080
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