Andean walnut

Names and Synonyms

Common Names

• Andean walnut
• Ecuador walnut
• Columbian Walnut
• Ecuadorean Walnut

Scientific Names

Accepted name

Synonyms

• Juglans granatensis
• Juglans equatoriensis
• Juglans columbiensis
• Juglans honorei

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified under the phylum Streptophyta within the class Equisetopsida. As a member of the subclass Magnoliidae and order Fagales, it is further organized into the family Juglandaceae. Ultimately, its taxonomic identity is defined by its placement within the genus Juglans.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily distributed across several distinct regions of the South American continent. In Northern South America, its presence is noted within the borders of Venezuela. Moving toward the west, the species is widely established in the country of Colombia. Its range continues through Western South America to include Ecuador and Peru. Finally, this medicinal plant can also be found in the unique ecosystem of the Galápagos Islands.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Juglans neotropica is characterized by its specialized adaptation to montane environments, where it thrives within specific altitudinal gradients. This species is predominantly found in high-elevation habitats, occupying a precise ecological niche that begins at a minimum elevation of 1600 m AMSL and extends up to a maximum elevation of 3100 m AMSL. Within this vertical range, the plant typically inhabits cloud forests and high-altitude montane woodlands, where it relies on the frequent moisture and temperate conditions typical of these elevations. Its distribution is closely tied to these specific topographic constraints, making it a key component of the high-altitude forest ecosystems in its native range.

Elevational range max:

3100 m AMSL

Elevational range min:

1600 m AMSL

Life history

The life history of Juglans neotropica is characterized by its nature as a perennial species, allowing it to persist in its ecosystem over many years. As part of its seasonal growth pattern, the plant exhibits deciduousness, shedding its foliage annually in response to environmental cues.

Deciduousness :

deciduous

Lifecycle :

perennial

Morphology

The morphology of Juglans neotropica is characterized by its stature as a robust, woody tree that grows as a self-supporting organism. This species typically reaches a plant height with a mean of 25 m, although its height can range up to a maximum of 20 m depending on environmental conditions. It is a strictly terrestrial plant, lacking any aquatic or semiaquatic tendencies, and does not function as an epiphyte or a climber, maintaining an independent existence without reliance on host structures. As an independent species, it does not exhibit parasitic behavior, instead establishing a stable, self-supporting growth form typical of large woody trees.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

20 m

Plant height mean:

25 m

Woodiness :

woody

Physiology

The physiology of Juglans neotropica is characterized by its specific metabolic strategies for carbon assimilation and nutrient acquisition. The plant utilizes a C3 photosynthetic pathway, which involves the direct fixation of atmospheric carbon dioxide through the Calvin cycle within the mesophyll cells, a process typical of most woody temperate and subtropical species. In terms of its nutritional physiology, Juglans neotropica is not a nitrogen fixer; it does not possess the symbiotic relationship with diazotrophic bacteria required to convert atmospheric nitrogen into bioavailable forms, meaning it relies entirely on the uptake of nitrogenous compounds, such as nitrates and ammonium, from the soil matrix to support its growth and protein synthesis.

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Reproduction

The reproduction of Juglans neotropica is characterized by specific physiological and morphological parameters regarding its progeny and pollination mechanisms. The plant is capable of self-fertilization, as the trait for self-fertilization is present, allowing for reproductive success even in the absence of external pollinators. The seeds produced during the reproductive cycle exhibit highly consistent physical properties, with a measured seed mass mean of 26.3159 g. This consistency is further evidenced by the extremely narrow range of seed weight, with a maximum mass of 26.316 g and a minimum mass of 26.3158 g, indicating a very stable investment of resources into each individual seed.

Seed mass max:

26.316 g

Seed mass mean:

26.3159 g

Seed mass min:

26.3158 g

Self fertilization :

present

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Juglans neotropica has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include juglone.

juglone

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Activities

Juglans neotropica has 5 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Antibacterial, Antifungal, Antioxidant, Hepatoprotective, Hypoglycemic.

Antibacterial

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Antifungal

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Antioxidant

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Hepatoprotective

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Hypoglycemic

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Conditions

Juglans neotropica has 3 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include Candida albicans, antioxidant, hypoglycemic.

Candida albicans

1. Journal of ethnopharmacology

Antioxidant

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Hypoglycemic

1. Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie