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

Interactions where Rorippa is the victim or passive partner (and generally loses out from the process)

The following relationships have been collated from the published literature (see 'Interaction References').

Filters:

Affected Part		Summary			Taxon	Vernacular	Classification	References	Darwin Classification of Active Taxon	Active Taxon	Active Vernacular	Active Taxon Uncertain	Active State	Active Part	Active Stage	Relationship	Relationship Uncertain	Relationship Geography	Darwin Classification of Passive Taxon	Passive Taxon	Passive Vernacular	Passive Taxon Uncertain	Passive State	Passive Part	Passive Stage	Passive Taxon's significance to Active Taxon	Indoors etc	Season	Summary
		is foodplant of larva			Aulacobaris lepidii	a weevil	Coleoptera: Curculionidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992	/Animalia/Arthropoda/Insecta/Coleoptera/Curculionidae/Aulacobaris lepidii/	Aulacobaris lepidii	a weevil				larva	Foodplant / feeds on			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses								larva feeds on
		is foodplant of larva			Ceutorhynchus pectoralis	a weevil	Coleoptera: Curculionidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992	/Animalia/Arthropoda/Insecta/Coleoptera/Curculionidae/Ceutorhynchus pectoralis/	Ceutorhynchus pectoralis	a weevil				larva	Foodplant / feeds on			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses								larva feeds on
(live)		live is parasitised by colony of sporangium			Hyaloperonospora parasitica s. lat.	Brassica Downy Mildew	Peronosporales: Peronosporaceae	Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998 Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Hyaloperonospora parasitica s. lat./	Hyaloperonospora parasitica s. lat.	brassica downy mildew			colony	sporangium	Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses		live			Major		(1-4)	colony of sporangium parasitises live
green parts (live, discoloured, distorted)		live, discoloured, distorted green parts is parasitised by colony			Albugo candida s. lat.	White Blister or White Rust Of Brassicaceae	Albuginales: Albuginaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997	/Chromista/Oomycota/Peronosporea/Albuginales/Albuginaceae/Albugo candida s. lat./	Albugo candida s. lat.	white blister or white rust of Brassicaceae			colony		Foodplant / parasite			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses		live, discoloured, distorted	green parts				(spring, early autumn)	colony parasitises live, discoloured, distorted green parts
inflorescence		inflorescence is galled by larva			Dasineura sisymbrii	a gall midge	Diptera: Cecidomyiidae	Provisional Keys to British Plant Galls, Stubbs, F.B. (Editor), 1986	/Animalia/Arthropoda/Insecta/Diptera/Cecidomyiidae/Dasineura sisymbrii/	Dasineura sisymbrii	a gall midge				larva	Foodplant / gall			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses			inflorescence					larva causes gall of inflorescence
leaf		leaf is grazed by larva			Phyllotreta ochripes	a flea beetle	Coleoptera: Chrysomelidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Phyllotreta ochripes/	Phyllotreta ochripes	a flea beetle				larva	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses			leaf					larva grazes on leaf
leaf		leaf is grazed by imago			Phyllotreta ochripes	a flea beetle	Coleoptera: Chrysomelidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Phyllotreta ochripes/	Phyllotreta ochripes	a flea beetle				imago	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses			leaf					imago grazes on leaf
leaf		leaf is grazed by larva			Phyllotreta tetrastigma	a flea beetle	Coleoptera: Chrysomelidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Phyllotreta tetrastigma/	Phyllotreta tetrastigma	a flea beetle				larva	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses			leaf					larva grazes on leaf
leaf		leaf is grazed by imago			Phyllotreta tetrastigma	a flea beetle	Coleoptera: Chrysomelidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Phyllotreta tetrastigma/	Phyllotreta tetrastigma	a flea beetle				imago	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses			leaf					imago grazes on leaf
leaf		leaf is grazed by larva			Psylliodes laticollis	a flea beetle	Coleoptera: Chrysomelidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Psylliodes laticollis/	Psylliodes laticollis	a flea beetle				larva	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses			leaf		Sole			larva grazes on leaf
leaf		leaf is grazed by imago			Psylliodes laticollis	a flea beetle	Coleoptera: Chrysomelidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Psylliodes laticollis/	Psylliodes laticollis	a flea beetle				imago	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses			leaf					imago grazes on leaf
leaf (live, discoloured, distorted)		live, discoloured, distorted leaf is parasitised by colony			Albugo candida s. lat.	White Blister or White Rust Of Brassicaceae	Albuginales: Albuginaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997	/Chromista/Oomycota/Peronosporea/Albuginales/Albuginaceae/Albugo candida s. lat./	Albugo candida s. lat.	white blister or white rust of Brassicaceae			colony		Foodplant / parasite			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses		live, discoloured, distorted	leaf				(spring, early autumn)	colony parasitises live, discoloured, distorted leaf
leaf (live, perforated)		live, perforated leaf is grazed by adult			Phaedon armoraciae	a mustard beetle	Coleoptera: Chrysomelidae	Atlas of the Seed and Leaf Beetles of Britain and Ireland, Cox, M.L., 2007	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Phaedon armoraciae/	Phaedon armoraciae	a mustard beetle				adult	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses		live, perforated	leaf				(5-11)	adult grazes on live, perforated leaf
leaf (live, with nibbled holes)		live, with nibbled holes leaf is grazed by adult			Phaedon cochleariae	Mustard Beetle, Watercress Beetle	Coleoptera: Chrysomelidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992 Atlas of the Seed and Leaf Beetles of Britain and Ireland, Cox, M.L., 2007	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Phaedon cochleariae/	Phaedon cochleariae	mustard beetle, watercress beetle				adult	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses		live, with nibbled holes	leaf				(5-9)	adult grazes on live, with nibbled holes leaf
leaf (live, with nibbled holes)		live, with nibbled holes leaf is grazed by adult			Phaedon cochleariae	Mustard Beetle, Watercress Beetle	Coleoptera: Chrysomelidae	Atlas of the Seed and Leaf Beetles of Britain and Ireland, Cox, M.L., 2007	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Phaedon cochleariae/	Phaedon cochleariae	mustard beetle, watercress beetle				adult	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses		live, with nibbled holes	leaf				(5-9)	adult grazes on live, with nibbled holes leaf
leaf (live)		live leaf is grazed by larva			Phaedon cochleariae	Mustard Beetle, Watercress Beetle	Coleoptera: Chrysomelidae	Host Plants of British Beetles: A List of Recorded Associations, Bullock, J.A., 1992 Atlas of the Seed and Leaf Beetles of Britain and Ireland, Cox, M.L., 2007	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Phaedon cochleariae/	Phaedon cochleariae	mustard beetle, watercress beetle				larva	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses		live	leaf				(-early 9)	larva grazes on live leaf
leaf (live)		live leaf is grazed by larva			Phaedon cochleariae	Mustard Beetle, Watercress Beetle	Coleoptera: Chrysomelidae	Atlas of the Seed and Leaf Beetles of Britain and Ireland, Cox, M.L., 2007	/Animalia/Arthropoda/Insecta/Coleoptera/Chrysomelidae/Phaedon cochleariae/	Phaedon cochleariae	mustard beetle, watercress beetle				larva	Foodplant / open feeder			/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses		live	leaf				(-early 9)	larva grazes on live leaf
root (live)		live root is parasitised by colony			Spongospora nasturtii	Crook Root Disease Of Water-cress - causative organism	Plasmodiophorida: Plasmodiophoridae	Fungi of the South East England, Dennis, R.W.G., 1995 Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997	/Protozoa/Cercozoa/Phytomyxea/Plasmodiophorida/Plasmodiophoridae/Spongospora nasturtii/	Spongospora nasturtii	crook root disease of water-cress (causative organism)			colony		Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Brassicales/Brassicaceae/Rorippa/	Rorippa	yellow-cresses and water-cresses		live	root					colony parasitises live root

Author & Year	Title	Source
Buczacki, S. & Harris, K., 1998	Pests, Diseases & Disorders of Garden Plants	Collins Photoguide, 2nd edition edition, Collins
Bullock, J.A., 1992	Host Plants of British Beetles: A List of Recorded Associations	11a, 24pp, Amateur Entomologists’ Society
Cox, M.L., 2007	Atlas of the Seed and Leaf Beetles of Britain and Ireland	336pp, Pisces Publications
Dennis, R.W.G., 1995	Fungi of the South East England	383pp, Royal Botanic Gardens, Kew
Ellis, M.B. & J.P., 1997	Microfungi on Land Plants: An Identification Handbook	2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd
Preece, T.F., 2002	A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles	33pp, British Mycological Society
Stubbs, F.B. (Editor), 1986	Provisional Keys to British Plant Galls	95pp, British Plant Gall Society (BPGS)

Rorippa (yellow-cresses and water-cresses) may also be included in 'fed on by' relations listed under the following higher taxa:

BRASSICACEAE
(cabbages, cresses etc.)

EU-DICOTS
(dicotyledonous flowering plants)

MAGNOLIOPSIDA
(flowering plants)

TRACHEOPHYTA
(vascular plants)

PLANTAE
(plants)

Herbaceous Plants
(herbaceous plants)

Subtaxon				Rank	Featured subtaxa	No of interactions	No of references
Rorippa amphibia Greater Yellow-cress, Great Yellow-cress				Species		3 trophisms
Rorippa islandica sens.str. Northern Yellow-cress				Species		1 trophisms
Rorippa microphylla Narrow-fruited Water-cress				Species		4 trophisms
Rorippa nasturtium-aquaticum Water-cress				Species		3 trophisms
Rorippa nasturtium-aquaticum x microphylla = R. x sterilis hybrid water-cress				Species hybrid		1 trophisms
Rorippa palustris Marsh Yellow-cress				Species		3 trophisms
Rorippa sylvestris Creeping Yellow-cress				Species		2 trophisms

Taxonomic hierarchy:

Genus	Rorippa (yellow-cresses and water-cresses)
Family	BRASSICACEAE (cabbages, cresses etc.)
Order	BRASSICALES (cabbages, cresses, weld, mignonette, spiderflowers and garden nasturtiums)
Subclass	EU-DICOTS (dicotyledonous flowering plants)
Class	MAGNOLIOPSIDA (flowering plants)
Phylum	TRACHEOPHYTA (vascular plants)
Kingdom	PLANTAE (plants)
Domain	Eukaryota (eukaryotes)
Life	BIOTA (living things)

Rorippa is also a member of:
Herbaceous Plants - herbaceous plants (via Brassicaceae)

NBN

NBN (data.nbn.org.uk) has a distribution map for Rorippa (yellow-cresses and water-cresses)

Identification Works

Handling & Magnification	Author	Year	Title	Source
()	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:

BRASSICACEAE
(cabbages, cresses etc.)

MAGNOLIOPSIDA
(flowering plants)

TRACHEOPHYTA
(vascular plants)

PLANTAE
(plants)

Eukaryota
(eukaryotes)

BIOTA
(living things)

General Works

Author	Year	Title	Source
Airy Shaw, H.K.		Variation and ecology in the British watercresses	Warburg, E.F. Cytology and critical groups, 6pp, British Flowering Plants and Modern Systematic Methods

Literature listed under the following higher taxa may also be relevant to Rorippa (yellow-cresses and water-cresses):

BRASSICACEAE
(cabbages, cresses etc.)

MAGNOLIOPSIDA
(flowering plants)

TRACHEOPHYTA
(vascular plants)

PLANTAE
(plants)

Eukaryota
(eukaryotes)

BIOTA
(living things)

BioImages

BioImages (www.bioimages.org.uk) has 91 images of 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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