poorman's-pepperwort

Names and Synonyms

Common Names

• Virginia peppergrass
• Virginia pepperweed
• poor-man's pepper
• poor-man's peppergrass
• Least Pepperwort
• Virginia cress
• Virginia pepper cress
• peppergrass
• poor-man's-pepper
• poor-man’s peppergrass
• Virginian Peppercress
• pepperweed

Scientific Names

Accepted name

Synonyms

• Nasturtiastrum virginicum
• Crucifera virginica
• Dileptium virginicum
• Nasturtium virginicum
• Thlaspi virginicum
• Iberis virginica

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta within the class Equisetopsida. It is classified under the subclass Magnoliidae and the order Brassicales, falling into the family Brassicaceae. Finally, its specific taxonomic identification is placed within the genus Lepidium.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant, known as Lepidium virginicum, exhibits a specific geographical range across several regions of Northern Europe. It can be found growing in the coastal and inland habitats of Denmark. Its distribution also extends northward into the territories of Finland and Norway. Furthermore, the species is documented within the landscapes of Great Britain. Finally, the plant's presence is noted across the island of Ireland.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Lepidium virginicum is characterized by its presence in anthropogenic areas (Área Antrópica), where it thrives in environments modified by human activity. This species exhibits a broad altitudinal distribution, spanning from sea level (0 m AMSL) up to a maximum elevation of 2500 m AMSL. On average, the plant is found at a mean elevation of approximately 600 m AMSL, indicating its ability to adapt to diverse topographic gradients and varied climatic conditions within its range.

Elevational range max:

2500 m AMSL

Elevational range mean:

600 m AMSL

Elevational range min:

0 m AMSL

Habitat :

Área Antrópica

Genetics

The genetics of Lepidium virginicum are characterized by specific chromosomal configurations and varying levels of polyploidy. The species exhibits distinct chromosome numbers, specifically recorded as 16 and 32, which indicates a capacity for chromosomal doubling. Furthermore, the plant demonstrates a ploidy level of 2, reflecting its underlying genomic structure and reproductive biology.

Chromosome number :

16, 32

Ploidy :

2

Life history

The life history of Lepidium virginicum is characterized by an annual lifecycle, completing its entire developmental process from germination to seed production within a single growing season. As a therophyte, it functions as an ephemeral plant that survives the unfavorable seasons in the form of seeds rather than through persistent vegetative structures. In terms of its physiological state and seasonal appearance, the plant is categorized as evergreen during its active growth period. This combination of an annual lifecycle and a therophytic life form allows the species to rapidly exploit available resources and colonize disturbed habitats before retreating into a dormant seed stage.

Deciduousness :

evergreen

Life form :

therophyte

Lifecycle :

annual

Morphology

The morphology of Lepidium virginicum is characterized by its growth form as a non-woody herb and forb. This terrestrial plant is self-supporting and independent, lacking any parasitic or epiphytic tendencies. It exhibits an erect shoot orientation, with a plant height that typically ranges from a minimum of 0.15 m to a maximum of 1 m, resulting in a mean height of approximately 0.3895 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

1 m

Plant height mean:

0.3895 m

Plant height min:

0.15 m

Shoot orientation :

erect

Woodiness :

non-woody

Physiology

The physiology of Lepidium virginicum is characterized by a C3 photosynthetic pathway and a non-carnivorous nutritional strategy, operating without the capacity for biological nitrogen fixation. Its vegetative structure is defined by elliptic leaf forms that lack any degree of succulence. The leaves exhibit significant morphological variability, with a mean length of 3.25 cm (ranging from a minimum of 1.5 cm to a maximum of 15 cm) and a mean width of 0.6 cm (ranging from 0.2 cm to a maximum of 1 cm). These dimensions result in a mean leaf size of 6.6275 cm², while the Specific Leaf Area (SLA) maintains a mean value of 227.8 cm²/g, reflecting the plant's leaf density and resource allocation strategies.

Carnivory :

non-carnivorous

Leaf form :

elliptic

Leaf length max:

15 cm

Leaf length mean:

3.25 cm

Leaf length min:

1.5 cm

Leaf size mean:

6.6275 cm²

Leaf width max:

1 cm

Leaf width mean:

0.6 cm

Leaf width min:

0.2 cm

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) mean:

227.8 cm²/g

Succulence :

no

Reproduction

The reproduction of Lepidium virginicum is primarily a sexual process, characterized by bisexual flowers that facilitate efficient reproduction. The flowering period typically commences in May and extends through August. These small, white flowers, which range in length from 0.1 cm to 0.15 cm, utilize biotic pollination syndromes, specifically relying on insects to facilitate the transfer of pollen. Self-fertilization is present within the species, ensuring reproductive success even in isolation. Following pollination, the plant develops capsule-type fruits that are dehiscence-based. These capsules vary in size, with a mean length of 0.275 cm (ranging from 0.2 cm to 0.42 cm) and a mean width of 0.225 cm (ranging from 0.1 cm to 0.3 cm). Each fruit is highly prolific, containing more than 1,000 seeds. The individual seeds are quite small, maintaining a consistent mean length of 1.5 mm (ranging from 1.5 mm to 2 mm) and a mean mass of approximately 0.00047 g, with individual seed weights ranging from 0.00031 g to 0.0011 g. Dispersal of these seeds is achieved through an unspecialized syndrome, though the species also exhibits anthropochorous dispersal, meaning human activity plays a role in its spread. The inflorescence, which houses these reproductive structures, is relatively compact, measuring between a minimum of 0.08 m and a maximum of 15 m in length. No asexual reproduction has been observed in this species.

Dehiscence :

dehiscent

Dispersal syndrome :

unspecialized

Dispersal syndrome :

anthropochorous

Flower colour :

white

Flower length max:

0.15 cm

Flower length min:

0.1 cm

Flowering time :

May

Flowering time :

Aug

Fruit length max:

0.42 cm

Fruit length mean:

0.275 cm

Fruit length min:

0.2 cm

Fruit type :

capsule

Fruit width max:

0.3 cm

Fruit width mean:

0.225 cm

Fruit width min:

0.1 cm

Inflorescence length max:

0.08 m

Inflorescence length min:

15 m

Pollination syndrome :

insect

Pollination syndrome :

biotic

Reproduction asexual :

absent

Reproduction sexual :

bisexual

Seed length max:

2 mm

Seed length mean:

1.5 mm

Seed mass max:

0.0011 g

Seed mass mean:

0.000470952333333333 g

Seed mass min:

0.00031 g

Seeds_per_fruit :

>1000

Self fertilization :

present

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Lepidium virginicum has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Flavonoids.

Flavonoids

1. Molecules (Basel, Switzerland)

Conditions

Lepidium virginicum has 1 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include Entamoeba histolytica.

Entamoeba histolytica

1. Phytotherapy research : PTR