Chilean rhubarb

Names and Synonyms

Common Names

• Chilean rhubarb
• giant rhubarb
• Giant-rhubarb
• Chilean-rhubarb

Scientific Names

Accepted name

Synonyms

• Panke tinctoria

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. Within the order Gunnerales, it is classified under the family Gunneraceae. Finally, it is situated within the genus Gunnera, specifically identified as Gunnera tinctoria.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse geographical range that spans across several continents and distinct climates. In Northern Europe, its presence can be documented within the regions of Great Britain and Ireland. Its distribution extends into Southwestern Europe, specifically within the borders of France. The species is also found in the Macaronesia archipelago, specifically inhabiting the Azores. Finally, its reach includes Western Canada, where it is located in British Columbia.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Gunnera tinctoria is characterized by its distribution across a diverse altitudinal gradient, ranging from sea level up to a maximum elevation of 1500 m AMSL. This species demonstrates a broad ecological adaptability, occupying environments that extend from coastal habitats to higher montane regions. Its ability to thrive from 0 m AMSL allows it to inhabit maritime zones, while its presence at higher elevations suggests a tolerance for varying atmospheric pressures and temperature fluctuations within its range.

Elevational range max:

1500 m AMSL

Elevational range min:

0 m AMSL

Habitat :

Coastal

Life history

The life history of Gunnera tinctoria is characterized by its classification as a perennial species, ensuring its continued presence in its natural habitat through multiple growing seasons. As a plant that utilizes specialized survival strategies, it exhibits a life form categorized as both a geophyte and a cryptophyte, relying on underground structures to endure unfavorable environmental conditions. Furthermore, the plant maintains an evergreen deciduousness, retaining its foliage to support its biological processes throughout its lifecycle.

Deciduousness :

evergreen

Life form :

geophyte

Life form :

cryptophyte

Lifecycle :

perennial

Morphology

The morphology of Gunnera tinctoria is characterized by its growth form as a non-woody herb, specifically categorized as a forb. It functions as an independent organism, neither acting as a parasite nor as an epiphyte, maintaining a terrestrial existence. The plant is self-supporting in its structure, lacking the climbing tendencies of a liana or vine. Reaching a maximum height of approximately 2 meters, it maintains a consistent average plant height of 2 meters throughout its development.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height mean:

2 m

Woodiness :

non-woody

Physiology

The physiology of Gunnera tinctoria is characterized by a specialized metabolic framework and significant morphological development. As a plant utilizing the C3 photosynthetic pathway, its carbon fixation process occurs primarily through the Calvin cycle, relying on the enzyme Rubisco to incorporate atmospheric carbon dioxide into organic compounds. This metabolic strategy is supported by large-scale vegetative structures, specifically leaves that can reach a substantial maximum leaf length of 90 cm. This expansive surface area facilitates efficient light interception and gas exchange, which is essential for supporting its physiological functions and overall biomass production.

Leaf length max:

90 cm

Photosynthetic pathway :

C3

Reproduction

The reproduction of Gunnera tinctoria involves both sexual and asexual mechanisms, with asexual reproduction being present. In its sexual cycle, the species is monoecious and exhibits an abiotic pollination syndrome, specifically mediated by insects. Self-fertilization is absent, necessitating external agents for successful reproduction. The plant produces fruits with a mean length of 0.2 cm, which contain a high density of seeds, with a count exceeding 1000 seeds per fruit. These seeds are notably small and uniform, characterized by a mean, minimum, and maximum length of 1.3 mm and a mean seed mass of 4e-04 g. For dispersal, the plant employs a zoochorous syndrome, specifically through endozoochory, where seeds are dispersed via the internal passage through animals.

Dispersal syndrome :

zoochorous

Dispersal syndrome :

endozoochorous

Fruit length mean:

0.2 cm

Pollination syndrome :

insect

Pollination syndrome :

abiotic

Reproduction asexual :

present

Reproduction sexual :

monoecious

Seed length mean:

1.3 mm

Seed mass mean:

4e-04 g

Seeds_per_fruit :

>1000

Self fertilization :

absent

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Gunnera tinctoria has 1 reported plant parts identified across 2 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf.

Leaf

1. Biological research
2. Molecules (Basel, Switzerland)

Chemicals

Gunnera tinctoria has 2 reported phytochemicals identified across 2 scientific publications and several other databases. The most consistently reported chemicals include ellagic acid, polyphenols.

ellagic acid

1. Biological research

polyphenols

1. Biological research

Activities

Gunnera tinctoria has 1 reported activities identified across 2 scientific publications and several other databases. The most consistently reported activities include Antioxidant.

Antioxidant

1. Molecules (Basel, Switzerland)

Medicinal Uses

Gunnera tinctoria has 3 reported medicinal uses identified across 2 scientific publications and several other databases. The most consistently reported uses include apoptosis, oxidative stress, vasoconstriction.

Most Reported Uses

Preparations