Geranium thunbergii

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Geranium thunbergii f. plenum
• Geranium nepalense f. roseum
• Geranium thunbergii f. roseum
• Geranium nepalense f. pallidum
• Geranium sibiricum f. pallidum
• Geranium nepalense subsp. thunbergii
• Geranium nepalense var. thunbergii
• Geranium thunbergii var. pallidum
• Geranium thunbergii f. pallidum
• Geranium thunbergii f. glabratum
• Geranium thunbergii var. glabratum
• Geranium thunbergii var. plenum
• Geranium iinumae var. asiaticum
• Geranium nepalense f. japonicum
• Geranium peregrinum
• Geranium thunbergii var. roseum

Sources: Wikidata

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 Geraniales, falling into the family Geraniaceae. Ultimately, it is categorized under the genus Geranium.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a broad geographical distribution spanning across several distinct regions of Asia and Europe. In Middle Europe, its presence can be specifically noted within Germany. Moving toward the east, the species is found in the Russian Far East, particularly around the Kuril Islands. Within China, the plant is widely distributed across the South-Central, North-Central, and Southeast territories. Consequently, its habitat range covers a diverse array of longitudinal and latitudinal zones.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Geranium thunbergii is intrinsically tied to the complex and highly productive environments of the Floresta Ombrófila, commonly known as the tropical rainforest or pluvial forest. Within these dense, humid ecosystems, the species thrives under the influence of high annual precipitation and consistent moisture levels that characterize the rainforest canopy and understory. This habitat provides a stable, shaded microclimate with high levels of organic matter in the soil, which is essential for its nutrient requirements. The plant's survival is dictated by the intense competition for light and space inherent to the Floresta Ombrófila, necessitating adaptations to the filtered light conditions and the high humidity that defines this specific forest type.

Habitat :

Floresta Ombrófila (= Floresta Pluvial)

Life history

The life history of Geranium thunbergii is characterized by its status as a perennial plant, meaning it survives for multiple growing seasons rather than completing its cycle in a single year. In terms of its structural growth strategy and survival mechanism, it is classified as a hemicryptophyte. This life form indicates that its perennimal buds are located at or just below the soil surface, protected by leaf litter or soil during unfavorable environmental conditions, allowing the plant to persist and regenerate annually.

Life form :

hemicryptophyte

Lifecycle :

perennial

Morphology

The morphology of Geranium thunbergii is characterized by its growth form as a non-woody herb, specifically classified as a forb. It is an independent organism, functioning as a non-parasitic species that does not rely on a host for nutrients. In terms of its habitat and ecological positioning, the plant is terrestrial rather than aquatic or epiphytic, meaning it does not exhibit holoepiphytic, hemiepiphytic, or aquatic tendencies. Furthermore, it is a self-supporting plant rather than a climber, lacking any liana, vine, or obligatory climbing structures.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Geranium thunbergii is characterized by a metabolic framework governed by a C3 photosynthetic pathway, which dictates its carbon fixation processes and water-use efficiency. As a C3 plant, it utilizes the enzyme RuBisCO to facilitate the initial fixation of atmospheric carbon dioxide into a three-carbon molecule, primarily through the Calvin cycle. This physiological mechanism implies that the plant's gas exchange and energy production are highly sensitive to light intensity, temperature, and moisture availability, as the C3 pathway is prone to photorespiration under high-temperature or water-stressed conditions. Consequently, its metabolic rate and biomass accumulation are intrinsically linked to its ability to maintain optimal stomatal conductance to balance CO2 uptake with transpirational water loss.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Geranium thunbergii is characterized by the production of seeds that exhibit high morphological consistency in terms of weight. Based on empirical data, the seeds produced by this species demonstrate a uniform mass, with a mean seed mass of 0.00287 g. This consistency is absolute across the observed sample, as both the maximum and minimum seed mass values are recorded at exactly 0.00287 g. This lack of variance in seed mass suggests a highly stabilized reproductive strategy, ensuring that each offspring is provided with a standardized amount of nutrient reserves to support initial germination and seedling establishment.

Seed mass mean:

0.00287 g

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Geranium thunbergii has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf.

Leaf

1. Biological & pharmaceutical bulletin

Chemicals

Geranium thunbergii has 27 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include Corilagin, Geraniin, ellagic acid, (+)-catechin, Brevifolin.

Corilagin

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

Geraniin

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

ellagic acid

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

(+)-catechin

1. Dr. Duke

Brevifolin

1. Dr. Duke

CALCIUM

1. Dr. Duke

COPPER

1. Dr. Duke

Elaeocarpusin

1. Dr. Duke

Ellagitannin

1. Dr. Duke

Ellagitannins

1. Molecules (Basel, Switzerland)

Activities

Geranium thunbergii has 367 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include 11B-HSD-Inhibitor, 5-Lipoxygenase-Inhibitor, ACE-Inhibitor, ATPase-Inhibitor, Abortifacient.

11B-HSD-Inhibitor

1. Dr. Duke

5-Lipoxygenase-Inhibitor

1. Dr. Duke

ACE-Inhibitor

1. Dr. Duke

ATPase-Inhibitor

1. Dr. Duke

Abortifacient

1. Dr. Duke

Additive

1. Dr. Duke

Adrenocorticotrophic

1. Dr. Duke

Aldehyde-Oxidase-Inhibitor

1. Dr. Duke

Aldose-Reductase-Inhibitor

1. Dr. Duke

Allelochemic

1. Dr. Duke

Conditions

Geranium thunbergii has 1 reported investigations on conditions identified across 1 scientific publications and several other databases. The most consistently reported conditions include malaria.

Malaria

1. Molecules (Basel, Switzerland)

Preparations

Geranium thunbergii has 4 reported preparations identified across 1 scientific publications and several other databases. The most consistently reported preparations include 50% ethanol and 100% methanol extract, EtOAc soluble fraction, long-term decoction, short-term decoction.

50% ethanol and 100% methanol extract

1. Molecules (Basel, Switzerland)

Etoac soluble fraction

1. Planta medica

Long-term decoction

1. Molecules (Basel, Switzerland)

Short-term decoction

1. Molecules (Basel, Switzerland)