Potentilla palustris (syn: Comarum palustre) (NL: Wateraardbei / EN: Marsh cinquefoil, Purple cinquefoil / DE: Sumpf-Blutauge / FR: Potentille des marais) is a waterside shrub in the Rosaceae family. It has a Circumboreal distribution, occurring throughout North America, Europe, and Asia, particularly the northern regions. It is most commonly found on lake shores, marshy riversides and stream margins, often partly submerged with foliage floating. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects. The plant is self-fertile. Known as Swamp Cinquefoil in North America, this is the only potentilla to have maroon flowers as this genus usually has yellow flowers. The name 'Cinquefoil' is from the French for 'five leaves' as many of this species have leaves divided into five leaflets.
Image: Maloja (CH) - 18/07/2011
© Johan Dierckx
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