annual mercury

Names and Synonyms

Common Names

• annual mercury
• herb mercury
• Annual Dog's Mercury
• French mercury

Scientific Names

Accepted name

Synonyms

• Mercurialis annua var. ambigua
• Mercurialis tarraconensis
• Mercurialis pinnatifida
• Mercurialis annua var. monoica
• Mercurialis annua f. ovata
• Mercurialis annua subvar. serrata
• Mercurialis annua var. transsylvanica
• Mercurialis annua var. variegata
• Mercurialis ladanum
• Discoplis serrata
• Mercurialis annua var. capillacea
• Mercurialis annua f. verticillata
• Mercurialis annua f. ambigua
• Mercurialis ambigua
• Mercurialis annua var. intermixta
• Mercurialis annua var. urticiformis
• Mercurialis annua subsp. ambigua
• Mercurialis annua lusus ambigua
• Mercurialis annua var. angustifolia
• Mercurialis annua var. camberiensis
• Mercurialis annua f. ciliata
• Mercurialis annua f. cordata
• Mercurialis annua f. cuneatolanceolata
• Mercurialis annua var. dioica
• Mercurialis annua var. laciniata
• Mercurialis annua f. lanceolata
• Mercurialis ciliata
• Mercurialis monoica
• Mercurialis annua var. sancti-marini
• Synema annuum

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, situated within the class Equisetopsida and subclass Magnoliidae. It is classified under the order Malpighiales and the family Euphorbiaceae. Finally, it is identified by the genus Mercurialis, which includes the species Mercurialis annua.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a broad geographical presence across several regions of Europe. In Northern Europe, its distribution includes Denmark, Great Britain, and Ireland. Moving toward the center of the continent, it can also be found within Middle Europe. Specifically, the species is documented to grow in Austria. Finally, its range extends to include Belgium within the Middle European region.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Mercurialis annua is characterized by its ability to thrive in disturbed environments, frequently colonizing anthropogenically influenced landscapes such as crop fields, old fields, and various ruderal sites. This species exhibits a broad altitudinal distribution, occurring across a vertical gradient that begins at sea level (0 m AMSL) and extends up to a maximum elevation of 1000 m AMSL. Its preference for ruderal habitats suggests a high degree of adaptability to nutrient-rich, disturbed soils where competition from established perennial vegetation may be lower.

Elevational range max:

1000 m AMSL

Elevational range min:

0 m AMSL

Habitat :

crop fields, old fields, ruderal sites

Life history

The life history of Mercurialis annua is characterized by its classification as an annual plant, meaning it completes its entire biological cycle—from germination to seed production—within a single growing season. As a therophyte, the species survives the unfavorable seasons primarily through the production of seeds, which remain dormant until conditions are favorable for regrowth. This life form strategy allows the plant to colonize disturbed or open habitats effectively. Additionally, the plant exhibits deciduous behavior, shedding its foliage as part of its seasonal developmental cycle.

Deciduousness :

deciduous

Life form :

therophyte

Lifecycle :

annual

Morphology

The morphology of Mercurialis annua is characterized by its growth form as a non-woody herb and forb. It is a terrestrial, independent species that does not function as an epiphyte or a parasite. The plant exhibits a self-supporting habit and is not a climber, such as a liana or vine. In terms of stature, the plant maintains an erect shoot orientation, with a height that typically ranges from a minimum of 0.1 m to a maximum of 0.6 m, resulting in a mean plant height of approximately 0.275 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

0.6 m

Plant height mean:

0.275 m

Plant height min:

0.1 m

Shoot orientation :

erect

Woodiness :

non-woody

Physiology

The physiology of Mercurialis annua is characterized by a C3 photosynthetic pathway, reflecting its metabolic strategy for carbon fixation. The plant exhibits a non-carnivorous nutritional profile and does not function as a nitrogen fixer, relying instead on soil-based nutrient uptake. Its foliar morphology is defined by an opposite leaf arrangement, with individual leaves presenting an elliptic form. Morphometric data indicates a mean leaf size of approximately 7.59855 cm² and a maximum leaf length of 4 cm. Furthermore, the plant maintains a relatively high Specific Leaf Area (SLA) with a mean value of 484.7 cm²/g, suggesting a physiological adaptation toward maximizing light interception through leaf area expansion relative to its biomass.

Carnivory :

non-carnivorous

Leaf arrangement :

opposite

Leaf form :

elliptic

Leaf length max:

4 cm

Leaf size mean:

7.59855 cm²

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) mean:

484.7 cm²/g

Reproduction

The reproduction of Mercurialis annua is characterized by a sexual process facilitated by a monoeciouse reproductive system, with asexual reproduction being entirely absent. The flowering period typically commences in June and can extend through to December. Pollination is achieved through a combination of abiotic and biotic mechanisms, primarily utilizing wind and bees to facilitate fertilization, while self-fertilization is noted as absent. Following successful pollination, the plant produces fruit in the form of a capsule, which measures between 0.25 cm and 0.3 cm in length. Each fruit is highly prolific, containing a high density of seeds ranging from 101 to 1000 per fruit. These seeds are quite small, with a mean length of 2 mm and a mean mass of 0.001943 g (ranging from a minimum of 0.0015 g to a maximum of 0.00212 g). The dispersal syndrome is classified as autochorous, meaning the plant relies on internal mechanisms for seed dispersal.

Dispersal syndrome :

autochorous

Flowering time :

Jun

Flowering time :

Dec

Fruit length max:

0.3 cm

Fruit length min:

0.25 cm

Fruit type :

capsule

Pollination syndrome :

wind

Pollination syndrome :

bee

Pollination syndrome :

abiotic

Reproduction asexual :

absent

Reproduction sexual :

monoecious

Seed length mean:

2 mm

Seed mass max:

0.00212 g

Seed mass mean:

0.001943 g

Seed mass min:

0.0015 g

Seeds_per_fruit :

101-1000

Self fertilization :

absent

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Mercurialis annua has 21 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include EO, Ethyl amine, FAT, Isorhamnetin, Mercurialin.

EO

1. Dr. Duke

Ethyl amine

1. Dr. Duke

FAT

1. Dr. Duke

Isorhamnetin

1. Dr. Duke

Mercurialin

1. Dr. Duke

Narcissin

1. Dr. Duke

Propylamine

1. Dr. Duke

RUTIN

1. Dr. Duke

Saponins

1. Dr. Duke

SiO2

1. Dr. Duke

Activities

Mercurialis annua has 114 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Antidiabetic, Antihypertensive, 5-HT-Inhibitor, Acetylcholinergic, Aldehyde-Oxidase-Inhibitor.

Antidiabetic

1. Dr. Duke
2. Plants (Basel, Switzerland)

Antihypertensive

1. Dr. Duke
2. Plants (Basel, Switzerland)

5-HT-Inhibitor

1. Dr. Duke

Acetylcholinergic

1. Dr. Duke

Aldehyde-Oxidase-Inhibitor

1. Dr. Duke

Aldose-Reductase-Inhibitor

1. Dr. Duke

Allelochemic

1. Dr. Duke

Anthelmintic

1. Dr. Duke

AntiCVI

1. Dr. Duke

AntiHIV

1. Dr. Duke

Conditions

Mercurialis annua has 2 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include antidiabetic, antihypertensive.

Antidiabetic

1. Plants (Basel, Switzerland)

Antihypertensive

1. Plants (Basel, Switzerland)