Araucaria bidwillii

Names and Synonyms

Scientific Names

Accepted name

Distribution

This plant exhibits a unique and disjunct geographical distribution across two different continents. In the Western Indian Ocean, it can be found growing on the island of Réunion. Additionally, the species has a significant presence in Australia, specifically within the state of Queensland. These distant locations highlight the wide range in which this medicinal species can thrive. Consequently, its habitat spans from tropical island environments to the coastal regions of the Australian continent.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Araucararia bidwillii is fundamentally defined by its preference for lowland environments, where it integrates into complex forest structures. Thriving in these lower elevations, the species typically occupies nutrient-rich soils within subtropical or tropical rainforest ecosystems, often found in areas with high humidity and consistent rainfall. Its presence in lowland habitats allows it to participate in the stratified canopy, where it competes for light and plays a crucial role in the local microclimate. The environmental conditions of these lowlands support a diverse range of associated flora and fauna, establishing the plant as a structural cornerstone within its specific ecological niche.

Habitat :

Lowland

Life history

The life history of Araucarica bidwillii is characterized by a long-lived, perennial lifecycle, with individual specimens capable of reaching a lifespan of approximately 500 years. As a phanerophyte, this species maintains its photosynthetic organs on tall, woody structures, exhibiting a robust growth habit that defines its presence in its native ecosystem. It is an evergreen plant, maintaining its foliage throughout the seasons rather than undergoing a period of dormancy or leaf shedding. This combination of a perennial nature, extreme longevity, and consistent greenery allows the plant to establish a stable and enduring presence within its habitat.

Deciduousness :

evergreen

Life form :

phanerophyte

Lifecycle :

perennial

Lifespan :

500

Morphology

The morphology of Araucararia bidwillii is characterized by its stature as a large, woody tree that can reach an average height of 40 m, with maximum heights extending up to 45 m. As a terrestrial species, it grows in a self-supporting manner rather than as a climber, liana, or vine, and it does not exhibit epiphytic or parasitic tendencies, functioning as an independent organism. Its growth form is strictly arborescent, maintaining a robust, woody structure throughout its development.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

45 m

Plant height mean:

40 m

Woodiness :

woody

Physiology

The physiology of Araucarica bidwillii is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation processes and metabolic efficiency. The plant's foliage exhibits highly consistent morphological dimensions, with leaf width remaining constant at a mean, minimum, and maximum of 0.7 cm. The leaves reach a maximum length of 5 cm, providing a specific surface area optimized for its metabolic requirements. Additionally, this species does not function as a nitrogen fixer, meaning it relies on external soil nutrient availability rather than symbiotic nitrogen-fixing bacteria to meet its nitrogen requirements.

Leaf length max:

5 cm

Leaf width mean:

0.7 cm

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Reproduction

The reproduction of Araucarica bidwillii is characterized by an abiotic pollination syndrome, specifically relying on the wind for the transfer of pollen. The plant produces substantial reproductive structures, with fruits that reach a mean length of 24 cm and a mean width of 20 cm. The seeds produced are relatively large and consistent in size, featuring a mean length of 60 mm (ranging from a minimum to a maximum of 60 mm) and a mean width of 25 mm (with minimum and maximum values also remaining at 25 mm). These seeds exhibit significant variation in mass, with a mean mass of approximately 10.63 g, though they can range from a minimum of 1 g to a maximum of 14.29 g. Regarding the movement of offspring, the species utilizes both zoochorous (animal-mediated) and anemochorous (wind-mediated) dispersal syndromes to colonize new areas. Notably, asexual reproduction is absent in this species, indicating a reliance on sexual processes for propagation.

Dispersal syndrome :

zoochorous

Dispersal syndrome :

anemochorous

Fruit length mean:

24 cm

Fruit width mean:

20 cm

Pollination syndrome :

wind

Pollination syndrome :

abiotic

Reproduction asexual :

absent

Seed length mean:

60 mm

Seed mass max:

14.286 g

Seed mass mean:

10.6326955 g

Seed mass min:

1 g

Seed width mean:

25 mm

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Araucaria bidwillii has 15 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include 7 -O-Methylagathisflavone, Amentoflavone dimethyl ether, BETA-SITOSTEROL, Bilobetin, Cupressuflavone-7-methyl ether.

7 -O-Methylagathisflavone

1. Dr. Duke

Amentoflavone dimethyl ether

1. Dr. Duke

BETA-SITOSTEROL

1. Dr. Duke

Bilobetin

1. Dr. Duke

Cupressuflavone-7-methyl ether

1. Dr. Duke

Hinokiflavone

1. Dr. Duke

Myricetol

1. Dr. Duke

Myricitrin

1. Dr. Duke

Pulcherralpin

1. Dr. Duke

Pulcherrimin

1. Dr. Duke

Activities

Araucaria bidwillii has 267 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include 11B-HSD-Inhibitor, 5-HT-Inhibitor, 5-Lipoxygenase-Inhibitor, ATPase-Inhibitor, Aldehyde-Oxidase-Inhibitor.

11B-HSD-Inhibitor

1. Dr. Duke

5-HT-Inhibitor

1. Dr. Duke

5-Lipoxygenase-Inhibitor

1. Dr. Duke

ATPase-Inhibitor

1. Dr. Duke

Aldehyde-Oxidase-Inhibitor

1. Dr. Duke

Aldose-Reductase-Inhibitor

1. Dr. Duke

Allelochemic

1. Dr. Duke

Allergenic

1. Dr. Duke

Analgesic

1. Dr. Duke

Androgenic

1. Dr. Duke