King fern

Names and Synonyms

Scientific Names

Accepted name

Regional and Traditional Names

Sources: Wikidata

Distribution

This plant exhibits a broad geographical distribution across several distinct regions in the Oceania and Australian territories. Within the Papuasian region, it can be found throughout New Guinea and the Bismarck Archipelago. Its presence in Australia is widespread, spanning multiple states and territories. Specifically, it is documented in the tropical landscapes of the Northern Territory and Queensland. Additionally, the species extends southward to reach the temperate regions of New South Wales.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Angiopteris evecta is intrinsically tied to the high-humidity environments of the tropical rain forest, where it thrives under specific microclimatic conditions. Within these dense forest ecosystems, the plant relies on the consistent moisture levels and buffered temperatures provided by the closed canopy to maintain its physiological functions. Its presence is often dictated by the availability of shaded, damp substrates and the complex vertical stratification of the forest, which allows it to occupy niches characterized by filtered light and high atmospheric moisture. The nutrient cycling processes inherent to the rain forest provide the necessary organic matter to support its growth, while the stable, wet environment prevents the desiccation that would otherwise occur in more seasonal or arid landscapes.

Habitat :

rain forest

Life history

The life history of Angiopteris evecta is characterized by a perennial lifecycle, allowing the plant to persist across multiple growing seasons. In terms of its growth habit and structural classification, it exhibits characteristics of both a phanerophyte and a nanophanerophyte, reflecting its specialized adaptation to its environment. Furthermore, the plant maintains an evergreen deciduousness, ensuring that its foliage remains functional throughout its developmental stages.

Deciduousness :

evergreen

Life form :

nanophanerophyte

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Angiopteryx evecta is characterized by a non-woody, herbaceous growth form, specifically classified as a forb. This plant is non-climbing and remains self-supporting, rather than functioning as a liana or vine. It maintains a terrestrial habit, as it is neither aquatic nor an epiphyte. In terms of stature, the plant exhibits a relatively modest size, with a maximum height reaching 0.8 m and an average height of approximately 5 m. Furthermore, the species is an independent organism, lacking any parasitic relationship with other plants.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

0.8 m

Plant height mean:

5 m

Woodiness :

non-woody

Physiology

The physiology of Angiopteris evecta is characterized by a C3 photosynthetic pathway, which governs its carbon fixation processes and metabolic efficiency. The plant lacks succulence, maintaining standard cellular water retention mechanisms without specialized water-storage tissues. Regarding its vegetative morphology, the leaves can reach a maximum length of 500 cm and a maximum width of 1.2 cm. Furthermore, the species does not function as a nitrogen fixer, relying instead on the availability of nitrogen within its immediate substrate rather than symbiotic nitrogen-fixing relationships.

Leaf length max:

500 cm

Leaf width max:

1.2 cm

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Succulence :

no

Reproduction

The reproduction of Angiopteris evecta is characterized by a dispersal strategy that relies heavily on environmental movement, specifically exhibiting an anemochorous dispersal syndrome. This indicates that the plant utilizes wind as the primary mechanism for transporting its reproductive units, such as spores, across the landscape. This anemochorous trait is consistent across its dispersal patterns, ensuring that the progeny can be effectively distributed through air currents to colonize new habitats.

Dispersal syndrome :

anemochorous

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Angiopteris evecta has 2 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, rhizome.

Leaf

1. Journal of ethnopharmacology

Rhizome

1. International journal of molecular sciences

Conditions

Angiopteris evecta has 3 reported investigations on conditions identified across 2 scientific publications and several other databases. The most consistently reported conditions include Acute myeloid leukemia, adenocarcinoma, large cell carcinoma.

Acute myeloid leukemia

1. International journal of molecular sciences

Adenocarcinoma

1. Plants (Basel, Switzerland)

Large cell carcinoma

1. Plants (Basel, Switzerland)

Preparations

Angiopteris evecta has 7 reported preparations identified across 2 scientific publications and several other databases. The most consistently reported preparations include (-)-epi-osmundalactone-rich fraction (OLRF), AE EtOAc No. 003, ethanol fraction, ethyl acetate extract, ethyl acetate extract (AE-EA).

(-)-epi-osmundalactone-rich fraction (olrf)

1. Plants (Basel, Switzerland)

Ae etoac no. 003

1. International journal of molecular sciences

Ethanol fraction

1. Plants (Basel, Switzerland)

Ethyl acetate extract

1. Plants (Basel, Switzerland)

Ethyl acetate extract (ae-ea)

1. Plants (Basel, Switzerland)

Hexane fraction

1. Plants (Basel, Switzerland)

Leaf extract

1. Journal of ethnopharmacology