Viola canina
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Viola canina, commonly known as heath dog-violet<ref name=BSBI07>Template:BSBI 2007</ref> and heath violet, is a species of the flowering plant in the violet family Violaceae. It is native to Europe, where it is found in heaths, fens, and moist woodlands, especially on acidic soils.<ref name=fbne>Template:Cite book</ref>
It is a herbaceous perennial plant growing to Template:Convert tall. The flowers are pale blue, produced from April to July. Colonies of plants may be extensive.<ref name=fbne/>
It is host to the pathogenic fungi Puccinia violae and Ramularia lactea.<ref Name="HH&GGE2004">Helgi Hallgrímsson & Guðríður Gyða Eyjólfsdóttir (2004). Íslenskt sveppatal I - smásveppir [Checklist of Icelandic Fungi I - Microfungi. Fjölrit Náttúrufræðistofnunar. Náttúrufræðistofnun Íslands [Icelandic Institute of Natural History]. ISSN 1027-832X</ref>