Rorippa Scop.
(yellow-cresses and water-cresses)

Subtaxon Example images Rank Featured
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Species 12 images
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Species 34 images
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Species 1 images
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Species 28 images
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Species hybrid 16 images
Taxonomic hierarchy:
GenusRorippa (yellow-cresses and water-cresses)
FamilyBRASSICACEAE (cabbages, cresses etc.)
OrderBRASSICALES (cabbages, cresses, weld, mignonette, spiderflowers and garden nasturtiums)
SubclassEU-DICOTS (dicotyledonous flowering plants)
ClassMAGNOLIOPSIDA (flowering plants)
PhylumTRACHEOPHYTA (vascular plants)
KingdomPLANTAE (plants)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)

Identification Works

AuthorYearTitleSource
() Lansdown R.V. & Pankhurst T.J. Field Guide to the Identification of Difficult Aquatic Plants of the New Forest

Rorippa (yellow-cresses and water-cresses) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Rorippa (yellow-cresses and water-cresses)
BioInfoBioInfo (www.bioinfo.org.uk) has 35 host/parasite/foodplant and/or other relationships for Rorippa (yellow-cresses and water-cresses)

A group of yellow crucifers which can be abundant in damp places.

Hybrids are common so care is needed in determinations.

Leaf shape distinguishes the species.

Fruits failing to ripen indicates a hybrid.

Specimens found early in the season will only have flowers. To check whether ripe fruits are formed, place a small piece in water on a well lit window sill. They generally grow well and usually even form roots.

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