Cardamine pentaphyllos

{{Short description|Species of flowering plant in the cabbage family Brassicaceae}}

{{Speciesbox

| name = Cardamine pentaphyllos

| image = Cardamine pentaphyllos.jpg

| taxon = Cardamine pentaphyllos

| authority = (L.) Crantz

}}

Cardamine pentaphyllos, the five-leaflet bitter-cress{{BSBI 2007|access-date=2014-10-17}} or showy toothwort, is a flowering plant in the family Brassicaceae, native to Western and Central Europe in Slovenia and Croatia. It is an herbaceous perennial, growing to {{convert|30|-|50|cm|0|abbr=on}}, with palmate leaves and racemes of purple, pink or white flowers in late Spring and early Summer.{{cite book|title=RHS A-Z encyclopedia of garden plants|year=2008|publisher=Dorling Kindersley|location=United Kingdom|isbn=978-1405332965|pages=1136}}

The Latin specific epithet pentaphyllos means "with five-lobed leaves".{{cite book|last=Harrison|first=Lorraine|title=RHS Latin for gardeners|year=2012|publisher=Mitchell Beazley|location=United Kingdom|isbn=9781845337315|pages=224}} The feminine form pentaphylla is sometimes seen, but this is deemed incorrect.

This plant has gained the Royal Horticultural Society's Award of Garden Merit.{{cite web|title=RHS Plant Selector - Cardamine pentaphylla|url=https://www.rhs.org.uk/Plants/140982/Cardamine-pentaphylla/Details | access-date=15 April 2020}}