Macaranga alnifolia

Names and Synonyms

Scientific Names

Accepted name

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant, Macaranga alniifolia, belongs to the kingdom Plantae and the phylum Streptophyta. Within the class Equisetopsida and subclass Magnoliidae, it is classified under the order Malpighiales and the family Euphorbiaceae. It is ultimately identified by the genus Macaranga.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily characterized by its highly specific and localized geographical range. It is native to the Western Indian Ocean region, where it thrives in unique tropical environments. Within this expansive oceanic area, its presence is specifically documented on the island of Madagascar. This restricted distribution suggests that the species is adapted to the particular ecological conditions found only in this part of the world. Consequently, conservation efforts for this medicinal species must focus on protecting the unique habitats of Madagascar.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Macaranga alniifolia is characterized by its classification as a phanerophyte, specifically exhibiting traits consistent with both phanerophyte and nanophanerophyte growth forms. As a phanerophyte, its perennating buds are elevated well above the ground surface on woody stems, allowing the plant to persist through seasonal environmental changes. Within this category, its development can manifest as a nanophanerophyte, where the woody structure remains relatively low or compact, yet it maintains the fundamental life strategy of protecting its buds on aerial branches. This life form enables the plant to establish a stable, long-lived presence in its habitat, utilizing its elevated buds to survive periods of unfavorable conditions before resuming active growth.

Life form :

phanerophyte

Morphology

The morphology of Macaranga alnifolia is characterized by its growth form as a woody tree, functioning as a self-supporting structure within its ecosystem. It is an independent organism, neither acting as a parasite nor as an epiphyte, maintaining a terrestrial existence rather than being aquatic or semiaquatic. As a robust, self-supporting tree, it does not exhibit climbing habits such as lianas or vines, instead establishing a stable, woody architecture that defines its physical presence.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Woodiness :

woody

Physiology

The physiology of Macaranga alniifolia is characterized by a metabolic framework utilizing the C3 photosynthetic pathway, a mechanism common to most woody tropical species where carbon fixation occurs via the Calvin cycle through the direct carboxylation of ribulose-1,5-bisphosphate by the enzyme RuBisCO. This pathway facilitates the conversion of atmospheric carbon dioxide into organic compounds within the mesophyll cells, supporting the plant's rapid growth and structural development in its native humid environments. The reliance on C3 photosynthesis dictates specific physiological adaptations to moisture availability and light intensity, as the plant must manage photorespiration and transpiration rates to optimize gas exchange while maintaining water potential within its tissues.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Macaranga alniifolia involves the production of seeds that exhibit highly consistent physical characteristics, indicating a stabilized reproductive output. Based on quantitative data, the seeds produced by this species maintain a uniform mass, with a measured seed mass mean of 0.02279 g. This uniformity is absolute across the recorded samples, as both the maximum (Seed_mass_max) and minimum (Seed_mass_min) recorded values are also exactly 0.02279 g. This lack of variance in seed mass suggests a highly regulated developmental process during the maturation of the seeds within the plant's reproductive structures.

Seed mass mean:

0.02279 g

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Macaranga alnifolia 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 fruit.

Fruit

1. Journal of natural products

Chemicals

Macaranga alnifolia has 7 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include Bonannione A, Vedelianin, alnifoliol, bonanniol A, diplacol.

Bonannione A

1. Journal of natural products

Vedelianin

1. Journal of natural products

alnifoliol

1. Journal of natural products

bonanniol A

1. Journal of natural products

diplacol

1. Journal of natural products

diplacone

1. Journal of natural products

schweinfurthin E

1. Journal of natural products

Activities

Macaranga alnifolia has 1 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include Antiproliferative.

Antiproliferative

1. Journal of natural products

Conditions

Macaranga alnifolia has 1 reported investigations on conditions identified across 1 scientific publications and several other databases. The most consistently reported conditions include ovarian cancer.

Ovarian cancer

1. Journal of natural products

Preparations

Macaranga alnifolia has 1 reported preparations identified across 1 scientific publications and several other databases. The most consistently reported preparations include extract of the fruit.

Extract of the fruit

1. Journal of natural products