petty spurge

Names and Synonyms

Common Names

• petty spurge
• radium-plant
• Purple Spurge
• Stinging Milkweed

Scientific Names

Accepted name

Synonyms

• Esula peplus
• Keraselma peplus
• Euphorbion peplum
• Tithymalus peplus
• Galarhoeus peplus

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. Under the subclass Magnoliidae, it is categorized within the order Malpighiales and the family Euphorbiaceae. Finally, its specific taxonomic placement is defined by the genus Euphorbia.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical distribution across several regions within Northern Europe. It can be found growing in the coastal and inland areas of Denmark. The species is also documented in the northern territories of Finland. Furthermore, its presence extends to the islands of Føroyar and the rugged landscapes of Iceland. Finally, the plant is well-established within the diverse habitats of Great Britain.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Euphorbia peplus is characterized by its remarkable adaptability to diverse landscapes, spanning an extensive elevational range from sea level (0 m AMSL) up to high-altitude environments reaching 3100 m AMSL. This broad vertical distribution allows the species to occupy various ecological niches across different climatic zones. Notably, the plant exhibits a strong presence within "Área Antrópica" (anthropic areas), indicating a significant capacity to thrive in habitats modified or created by human activity, such as agricultural lands, disturbed soils, and urbanized surroundings. This ability to colonize anthropogenic environments suggests that Euphorbia peplus functions effectively as a pioneer or opportunistic species within human-influenced ecosystems.

Elevational range max:

3100 m AMSL

Elevational range min:

0 m AMSL

Habitat :

Área Antrópica

Genetics

The genetics of Euphorbia peplus are characterized by a specific karyotype that serves as a foundational element of its cytogenetic profile. A key quantitative feature of its genome is its chromosome number, which is documented as 16. This diploid number provides the structural basis for the plant's genetic inheritance and plays a critical role in its cellular reproduction and evolutionary stability within the Euphorbiaceae family.

Chromosome number :

16

Life history

The life history of Euphorbia peplus is characterized by its classification as an annual plant, completing its entire reproductive cycle within a single growing season. As a therophyte, it survives unfavorable conditions through highly specialized dormant seeds rather than through persistent vegetative structures. Its growth habit is defined by this therophytic life form, which allows it to rapidly colonize disturbed soils and temporary habitats. Furthermore, the plant exhibits a deciduous nature, shedding its foliage as it progresses through its seasonal development or in response to environmental shifts.

Deciduousness :

deciduous

Life form :

therophyte

Lifecycle :

annual

Morphology

The morphology of Euphorbia peplus is characterized by its growth form as a non-woody herb and specifically a forb. This terrestrial plant is self-supporting rather than acting as a climber, liana, or vine, and it functions as an independent organism rather than a parasite or epiphyte. Structurally, it exhibits an erect shoot orientation. In terms of stature, the plant is relatively small, with a minimum height of 0.05 m, a maximum height of 0.5 m, and an average plant height of approximately 0.223 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

0.5 m

Plant height mean:

0.223333333333333 m

Plant height min:

0.05 m

Shoot orientation :

erect

Woodiness :

non-woody

Physiology

The physiology of Euphorbia peplus is characterized by a highly efficient metabolic and morphological structure adapted for specific environmental niches. It utilizes a C4 photosynthetic pathway, a specialized carbon fixation mechanism that enhances resource efficiency compared to C3 plants. The plant is non-carnivorous and does not function as a nitrogen fixer, relying instead on soil-based nutrient uptake. Morphologically, its foliage consists of elliptic leaves that exhibit significant variability in dimension; the leaf length typically averages 2.75 cm, ranging from a minimum of 0.4 cm to a maximum of 4 cm, while the leaf width averages 1.25 cm, with measurements spanning from 0.2 cm to a maximum of 1.8 cm. These dimensions result in a mean leaf size of 0.79 cm². Furthermore, the plant maintains a mean Specific Leaf Area (SLA) of 377.5 cm²/g, reflecting its internal leaf density and its capacity for light interception and gas exchange.

Carnivory :

non-carnivorous

Leaf form :

elliptic

Leaf length max:

4 cm

Leaf length mean:

2.75 cm

Leaf length min:

0.4 cm

Leaf size mean:

0.79 cm²

Leaf width max:

1.8 cm

Leaf width mean:

1.25 cm

Leaf width min:

0.2 cm

Nitrogen fixer :

no

Photosynthetic pathway :

C4

Specific Leaf Area (SLA) mean:

377.5 cm²/g

Reproduction

The reproduction of Euphorbia peplus is characterized by a sexual process involving bisexual flowers that appear in a cyme inflorescence. These inflorescences are quite small, ranging in length from a minimum of 0.0007 m to a maximum of 0.0015 m. The flowering period is extensive, beginning in January and continuing through December, which allows for a long reproductive window. The flowers are green in color and rely on biotic pollination syndromes, specifically utilizing insects such as flies to facilitate fertilization; notably, self-fertilization is absent in this species. Following successful pollination, the plant develops fleshy, dehiscient capsules as its fruit type. These capsules are relatively small, with a mean length of 0.1675 cm (ranging from 0.13 to 0.28 cm) and a mean width of 0.225 cm (ranging from 0.12 to 0.3 cm). Each fruit is highly productive, containing more than 1,000 seeds. The seeds themselves are minute, possessing a mean length and width of 1.5 mm, with lengths varying between 1 and 1.7 mm and widths between 0.6 and 1.1 mm. The seed mass is similarly tiny, averaging 0.000598 g, with a range between 0.00048 g and 0.001123 g. Dispersal of these seeds follows an unspecialized pattern, though it also exhibits anthropochorous tendencies. While the plant engages in sexual reproduction, asexual reproduction is absent.

Dehiscence :

dehiscent

Dispersal syndrome :

unspecialized

Dispersal syndrome :

anthropochorous

Flower colour :

green

Flowering time :

Jan

Flowering time :

Dec

Fruit dryness :

fleshy

Fruit length max:

0.28 cm

Fruit length mean:

0.1675 cm

Fruit length min:

0.13 cm

Fruit type :

capsule

Fruit width max:

0.3 cm

Fruit width mean:

0.225 cm

Fruit width min:

0.12 cm

Inflorescence :

cyme

Inflorescence length max:

0.0015 m

Inflorescence length min:

7e-04 m

Pollination syndrome :

insect

Pollination syndrome :

fly

Pollination syndrome :

biotic

Reproduction asexual :

absent

Reproduction sexual :

bisexual

Seed length max:

1.7 mm

Seed length mean:

1.5 mm

Seed length min:

1 mm

Seed mass max:

0.001123 g

Seed mass mean:

0.000598 g

Seed mass min:

0.00048 g

Seed width max:

1.1 mm

Seed width mean:

1.5 mm

Seed width min:

0.6 mm

Seeds_per_fruit :

>1000

Self fertilization :

absent

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Euphorbia peplus has 4 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include 20-Deoxyingenol 3-angelate, Ingenol 3-angelate, Ingenol mebutate, Peplusol.

20-Deoxyingenol 3-angelate

1. Journal of agricultural and food chemistry

Ingenol 3-angelate

1. The New phytologist

Ingenol mebutate

1. Journal of ethnopharmacology

Peplusol

1. Phytochemistry

Activities

Euphorbia peplus has 2 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Anticancer, Antitumor.

Anticancer

1. The New phytologist

Antitumor

1. The New phytologist

Medicinal Uses

Euphorbia peplus has 4 reported medicinal uses identified across 0 scientific publications and several other databases. The most consistently reported uses include actinic keratosis, basal cell carcinoma, skin cancer, warts.

Most Reported Uses

Preparations