northern marsh yellowcress

Names and Synonyms

Common Names

• northern marsh yellowcress
• Marsh Cress
• Northern Yellow Cress
• Yellow Watercress
• yellow-watercress
• Northern Yellow-cress

Scientific Names

Accepted name

Synonyms

• Nasturtium islandicum
• Sisymbrium islandicum

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae within the phylum Streptophyta and the class Equisetopsida. It is further classified under the subclass Magnoliidae and the order Brassicales. Finally, it is a member of the family Brassicaceae and falls under the genus Rorippa.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a wide distribution across several distinct regions of the European continent. In Northern Europe, it can be found growing in the landscapes of Great Britain, Ireland, and Norway. Its presence is also notably established within the island of Iceland. Moving toward the center of the continent, the species extends into Middle Europe. Specifically, it inhabits the mountainous or temperate regions of Austria.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Rhodiola islandica is characterized by a perennial lifecycle, allowing the plant to persist through multiple growing seasons. Structurally, it is classified as a hemicryptophyte, a life form where the perennating buds are located at the soil surface, typically protected by leaf litter or a thin layer of substrate. This hemicryptophytic strategy enables the plant to endure seasonal environmental shifts by sheltering its vital regenerative tissues just above the ground level.

Life form :

hemicryptophyte

Lifecycle :

annual

Morphology

The morphology of Rhodiola islandica is characterized by its growth form as a non-woody herb, specifically classified as a forb. It is a self-supporting plant that does not function as a climber or a vine, maintaining an independent life cycle without being a parasite or an epiphyte. The species is terrestrial in its habitat, neither aquatic nor semiaquatic. In terms of stature, the plant is relatively diminutive, with a height that typically ranges from a minimum of 0.1 m to a maximum of 0.2 m, resulting in a mean plant height of approximately 0.15 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

0.2 m

Plant height mean:

0.15 m

Plant height min:

0.1 m

Woodiness :

non-woody

Physiology

The physiology of Rhodiola islandica is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation process and metabolic efficiency in its native environment. This metabolic strategy is closely linked to its morphological adaptations, specifically reflected in its Specific Leaf Area (SLA), which has a mean value of 256 cm²/g. This relatively high SLA suggests a leaf structure optimized for efficient gas exchange and light interception relative to its biomass, playing a crucial role in how the plant manages its energy budget and resource allocation during growth.

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) mean:

256 cm²/g

Reproduction

The reproduction of Rorippa islandica is characterized by a specific seasonal flowering window and specialized seed dispersal mechanisms. The flowering period typically commences in June and extends through September, though the timing can be variable depending on environmental conditions. Following pollination, the plant produces highly lightweight seeds; the seed mass varies from a minimum of 4e-05 g to a maximum of 7e-05 g, with a calculated mean seed mass of 5.895e-05 g. Regarding its dispersal strategy, the species exhibits an autochorous syndrome, meaning it relies on internal mechanisms for seed dispersal to spread its progeny.

Dispersal syndrome :

autochorous

Flowering time :

Jun

Flowering time :

Sep

Seed mass max:

7e-05 g

Seed mass mean:

5.895e-05 g

Seed mass min:

4e-05 g

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Rorippa islandica has 3 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include 13-Docosenamide, Gallic acid, Rorifone.

13-Docosenamide

1. Scientific reports

Gallic acid

1. Scientific reports

Rorifone

1. Dr. Duke

Preparations

Rorippa islandica has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include ethanol crude extracts.

Ethanol crude extracts

1. Scientific reports