| Subtaxon | Example images | Rank | Featured subtaxa |
No of images |
No of ID refs |
|||
|---|---|---|---|---|---|---|---|---|
|
|
Species | 12 images | ||||||
|
|
Species | 34 images | ||||||
|
|
Species | 1 images | ||||||
|
|
Species | 28 images | ||||||
|
|
Species hybrid | 16 images | ||||||
| Subtaxon | Example images | Rank | Featured subtaxa |
No of images |
No of ID refs |
|||
|---|---|---|---|---|---|---|---|---|
|
|
Species | 12 images | ||||||
|
|
Species | 34 images | ||||||
|
|
Species | 1 images | ||||||
|
|
Species | 28 images | ||||||
|
|
Species hybrid | 16 images | ||||||
| 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:
 NBN (data.nbn.org.uk)
has a distribution map for Rorippa (yellow-cresses and water-cresses)
|
 BioInfo (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.
Unless otherwise expressly stated, all original material on the BioImages website by Malcolm Storey is licensed under the above Creative Commons Licence.
Photographs from other photographers are used with permission but not included under the above CC licence.