toi

Names and Synonyms

Common Names

• toi

Scientific Names

Accepted name

Synonyms

• Rhamnus zizyphoides
• Pomaderris zizyphoides

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 Rosales, it is classified under the family Rhamnaceae. Specifically, the medicinal species Alphitonia zizyphoides is identified by the genus Alphitonia.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily distributed throughout the Southwestern Pacific region. Specifically, its natural range includes the island nation of Fiji. It can also be found growing within the territories of Niue and Samoa. Furthermore, the species extends its presence to the islands of Tonga. Finally, the geographical footprint of this medicinal plant encompasses Vanuatu.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Alphitonia zizyphoides is characterized by a perennial lifecycle, allowing the plant to persist in its environment over many years rather than completing its cycle in a single season. As a long-lived woody species, it maintains a stable presence within its ecosystem, undergoing repeated cycles of vegetative growth and reproductive phases. This perennial nature enables the plant to establish robust root systems and structural longevity, providing it with the resilience necessary to endure seasonal fluctuations and environmental stressors over an extended duration.

Lifecycle :

perennial

Morphology

The morphology of Alphitonia zizyphoides is characterized by a robust growth form, specifically categorized as a tree. This woody plant is primarily terrestrial in its habitat and functions as a self-supporting organism rather than a climber or liana. It possesses a significant stature, with a mean plant height reaching approximately 20 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Plant height mean:

20 m

Woodiness :

woody

Physiology

The physiology of Alphitonia zizyphoides is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation process and metabolic efficiency in its natural habitat. The plant does not exhibit any form of succulence, meaning it lacks specialized water-storage tissues in its leaves or stems to mitigate drought through volume expansion. Furthermore, it does not function as a nitrogen fixer, as it lacks the symbiotic relationship with nitrogen-fixing bacteria required to convert atmospheric nitrogen into usable forms for growth.

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Succulence :

no

Reproduction

The reproduction of Alphitonia zizyphoides involves specialized mechanisms for seed distribution, primarily characterized by a zoochorous dispersal syndrome. Within this biological framework, the plant exhibits endozoochorous dispersal, a process where seeds are ingested by animals and subsequently spread through their digestive tracts. This strategy ensures that the seeds are transported away from the parent plant, often accompanied by natural fertilization through animal waste, thereby facilitating the colonization of new habitats.

Dispersal syndrome :

zoochorous

Dispersal syndrome :

endozoochorous

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Alphitonia zizyphoides has 4 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include 3,5-dihydroxy-4-methoxy phenethyl alcohol, Alphitol, Jujubogenin, betulinic acid.

3,5-dihydroxy-4-methoxy phenethyl alcohol

1. Phytochemistry

Alphitol

1. Phytochemistry

Jujubogenin

1. Journal of natural products

betulinic acid

1. Phytochemistry

Activities

Alphitonia zizyphoides has 2 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Antimicrobial, Antioxidant.

Antimicrobial

1. Journal of ethnopharmacology

Antioxidant

1. Journal of ethnopharmacology