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{{Taxobox
| color = lightgreen
| name = Crack Willow
| status =
secure
| image = Salix fragilis 004.jpg
| image_width = 240px
| image_caption = Crack Willow
| regnum = [[Plant]]ae
| divisio = [[Flowering plant|Magnoliophyta]]
| classis = [[Dicotyledon|Magnoliopsida]]
| ordo = [[Malpighiales]]
| familia = [[Salicaceae]]
| genus = ''[[Willow|Salix]]''
| species = '''''S. fragilis'''''
| binomial = ''Salix fragilis''
| binomial_authority = [[Carolus Linnaeus|L.]]
}}
The '''Crack Willow''' (''Salix fragilis'') is a [[willow]] native to [[Europe]] and [[Asia]], and is reportedly invasive in North America. It is a medium-sized to large [[deciduous]] tree, which grows rapidly and can be up to 27 m tall. Its preferred habitat is beside rivers. The [[Leaf|leaves]] are bright green, 9-15 cm long and 1.5-3 cm wide, with a finely serrated margin. The [[plant sexuality|dioecious]] [[flower]]s are catkins, produced in early spring, and pollinated by bees.
The name derives from the [[twig]]s which break off very easily and cleanly at the base with an audible crack. The broken twigs and branches take root readily, enabling the species to colonise new areas, particularly where the broken twigs fall into rivers and can be carried some distance downstream. It is particularly adept at colonising new riverside sandbanks formed after [[flood]]s.
Its female flowers can have either one or two [[nectar]]ies.
{{Commons|Salix fragilis}}
{{wikispecies|Salix fragilis}}
[[Category:Salicaceae|Willow, Crack]]
| color = lightgreen
| name = Crack Willow
| status =
secure
| image = Salix fragilis 004.jpg
| image_width = 240px
| image_caption = Crack Willow
| regnum = [[Plant]]ae
| divisio = [[Flowering plant|Magnoliophyta]]
| classis = [[Dicotyledon|Magnoliopsida]]
| ordo = [[Malpighiales]]
| familia = [[Salicaceae]]
| genus = ''[[Willow|Salix]]''
| species = '''''S. fragilis'''''
| binomial = ''Salix fragilis''
| binomial_authority = [[Carolus Linnaeus|L.]]
}}
The '''Crack Willow''' (''Salix fragilis'') is a [[willow]] native to [[Europe]] and [[Asia]], and is reportedly invasive in North America. It is a medium-sized to large [[deciduous]] tree, which grows rapidly and can be up to 27 m tall. Its preferred habitat is beside rivers. The [[Leaf|leaves]] are bright green, 9-15 cm long and 1.5-3 cm wide, with a finely serrated margin. The [[plant sexuality|dioecious]] [[flower]]s are catkins, produced in early spring, and pollinated by bees.
The name derives from the [[twig]]s which break off very easily and cleanly at the base with an audible crack. The broken twigs and branches take root readily, enabling the species to colonise new areas, particularly where the broken twigs fall into rivers and can be carried some distance downstream. It is particularly adept at colonising new riverside sandbanks formed after [[flood]]s.
Its female flowers can have either one or two [[nectar]]ies.
{{Commons|Salix fragilis}}
{{wikispecies|Salix fragilis}}
[[Category:Salicaceae|Willow, Crack]]