Acalypha grandis

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Acalypha exaltata
• Acalypha finitima
• Acalypha consimilis
• Ricinocarpus exaltatus
• Ricinocarpus consimilis
• Ricinocarpus grandis
• Acalypha grandis var. villosa
• Acalypha amentacea var. grandis

Sources: Wikidata

Taxonomical Classification

This plant belongs to the kingdom Plantae within the phylum Streptophyta and the class Equisetopsida. It is further classified under the subclass Magnoliidae and the order Malpighiales. Finally, it is a member of the family Euphorbiaceae and falls under the genus Acalypha.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a broad distribution across several key regions within the tropical Pacific. In the Papuasian area, it can be found throughout New Guinea and the Bismarck Archipelago. Its range also extends to the Solomon Islands within the same Papuasian territory. Moving into the Southwestern Pacific, the species is present in Fiji. Finally, its geographical footprint includes the Gilbert Islands in the Southwestern Pacific region.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Acalypha grandis is characterized by its specialized adaptation to saline and disturbed environments, specifically thriving within halophytic vegetation. It is frequently found integrated into dense secondary shrublands where competition for light and space is high, as well as within rudeural vegetation zones. These rudeural habitats indicate the plant's capacity to colonize disturbed ground, such as roadsides, waste areas, or anthropogenically altered landscapes, where it utilizes its tolerance for varying soil qualities to establish itself among opportunistic species.

Habitat :

halophytic vegetation, dense secondary shrub and ruderal vegetation

Life history

The life history of Acalypha grandis is characterized by a perennial lifecycle, allowing the plant to persist through multiple growing seasons rather than completing its cycle in a single year. In terms of its structural growth habit and survival strategy, it exhibits a dual classification of life forms; it functions as a phanerophyte, maintaining its visible photosynthetic organs above the ground level, while also displaying characteristics of a nanophanerophyte, where the shoot system is relatively short and stays close to the substrate. This combination of traits enables the species to establish a long-term presence in its ecosystem, utilizing its perennial nature to endure environmental fluctuations.

Life form :

nanophanerophyte

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Acalypha grandis is characterized by a woody growth form, primarily manifesting as a shrub. This plant reaches an average height of approximately 6 m and is classified as a self-supporting organism, meaning it does not function as a liana or vine but maintains its own structure. It is a terrestrial species, existing as an independent organism rather than acting as a parasite or an epiphyte.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

shrub

Parasite :

independent

Plant height mean:

6 m

Woodiness :

woody

Physiology

The physiology of Acalypha grandis is characterized by a metabolic framework adapted to tropical or sub-tropical environments, where efficient water management and nutrient acquisition are paramount. Regarding its morphological and physiological adaptations to water storage, the plant does not exhibit succulence; it lacks the specialized parenchymatous tissues required to store significant volumes of water within its stems or leaves, instead relying on standard transpiration rates and soil moisture availability. Furthermore, in terms of its symbiotic nutrient cycling, Acalypha grandis is not a nitrogen fixer; it does not possess specialized root nodules containing diazotrophic bacteria to convert atmospheric nitrogen into bioavailable forms, meaning its nitrogen requirements are met entirely through the uptake of nitrates and ammonium from the soil substrate. Its physiological processes are driven by standard C3 photosynthetic pathways, maintaining cellular homeostasis through conventional transpiration and nutrient absorption mechanisms.

Nitrogen fixer :

no

Succulence :

no

Reproduction

The reproduction of Acalypha grandis is characterized by a diverse array of dispersal syndromes that facilitate its spread across various environments. The plant utilizes an autochorous mechanism, where seeds are dispersed by the plant itself, often through explosive dehiscence or natural shedding. This primary method is supplemented by anemochorous dispersal, allowing wind to carry lightweight seeds to new locations, and hydrochorous dispersal, which utilizes water currents for transport. The species also exhibits zoochorous traits, including endozoochorous dispersal, where seeds pass through the digestive tracts of animals, and epizoochorous dispersal, where seeds adhere to the exterior of animals. Furthermore, the reproductive strategy encompasses myrmecocorous dispersal via ants and unspecialized modes of movement. Anthropochorous dispersal, driven by human activity, also plays a role in its distribution, contributing to a complex multi-modal dispersal profile.

Dispersal syndrome :

autochorous

Sources: Global Inventory of Floras and Traits (GIFT)

Activities

Acalypha grandis has 1 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Antiprotozoal.

Antiprotozoal

1. Phytotherapy research : PTR

Conditions

Acalypha grandis has 1 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include Plasmodium falciparum.

Plasmodium falciparum

1. Phytotherapy research : PTR