copal tree

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Protium palmeri
• Tingulonga copal
• Icica palmeri
• Protium copal var. matudae

Regional and Traditional Names

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. It is classified within the order Sapindales and the family Burseraceae. Specifically, its taxonomic identity is defined by the genus Protium.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse presence across several distinct regions within the country of Mexico. Its distribution begins in the central part of the nation, spanning through Mexico Central. The species also extends into the northeastern territories, covering Mexico Northeast. Furthermore, it can be found throughout the coastal areas of Mexico Gulf. Finally, the plant's range reaches into the southern reaches of the country, encompassing both Mexico Southwest and Mexico Southeast.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Protium copal is fundamentally defined by its existence within the complex stratified layers of the forest, where it plays a significant role in the nutrient cycling and structural integrity of its ecosystem. Thriving in these forested environments, the species is highly adapted to the high humidity and dappled light conditions characteristic of tropical and subtropical biomes. As a component of the forest canopy or sub-canopy, it relies on the symbiotic relationships and soil microbial networks found in undisturbed forest floors to support its growth. Its presence is often indicative of a healthy, mature forest structure, where it contributes to the local biodiversity by providing microhabitats and resources for various forest fauna.

Habitat :

forest

Life history

The life history of Protium copal is characterized by its status as a perennial organism, meaning it maintains its vegetative functions and continues to grow over many years rather than completing its cycle within a single season. As a long-lived woody species, its lifecycle progresses through a sustained developmental trajectory that allows it to establish a robust presence within its ecosystem. Following an initial establishment phase, the plant transitions into a mature stage where it focuses on long-term survival and reproductive stability, often enduring through various environmental shifts over several decades. This perennial nature ensures that the plant can repeatedly undergo reproductive cycles, contributing to its longevity and its ability to accumulate significant biomass over time.

Lifecycle :

perennial

Morphology

The morphology of Protium copal is characterized by its robust growth form as a woody tree. It functions as a self-supporting, independent organism, lacking any parasitic or climbing habits. The plant is strictly terrestrial in its habitat, neither aquatic nor epiphytic. In terms of its physical dimensions, it reaches a significant stature, with a mean plant height of 25 m and a maximum recorded height of 22 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

22 m

Plant height mean:

25 m

Woodiness :

woody

Physiology

The physiology of Protium copal is characterized by a C3 photosynthetic pathway, indicating a metabolic strategy typical of many tropical forest species that thrive under varying light conditions. The plant's leaf architecture is defined by a highly consistent Specific Leaf Area (SLA), with a recorded mean, minimum, and maximum value of 172.6 cm²/g, suggesting a stabilized leaf structure for light interception. This is complemented by a Leaf Dry Matter Content (LDMC) that remains constant at 449.6 mg/g across its measured range (min, mean, and max), reflecting a uniform investment in leaf tissue density and durability. Regarding its structural composition, the stem specific density (SSD) exhibits significant variability, ranging from a minimum of 520 mg/cm³ to a maximum of 780 mg/cm³, with an overall mean density of 650 mg/cm³. Furthermore, the species does not function as a nitrogen fixer, relying instead on soil nutrient availability to support its physiological processes.

Leaf dry matter content (LDMC) mean:

449.6 mg/g

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) min:

172.6 cm²/g

Stem specific density (SSD) max:

780 mg/cm³

Stem specific density (SSD) mean:

650 mg/cm³

Stem specific density (SSD) min:

520 mg/cm³

Reproduction

The reproduction of Protium copal is characterized by specific morphological and biological mechanisms that ensure the dispersal and establishment of new individuals. The species exhibits an absence of self-fertilization, indicating a reliance on cross-pollination to maintain genetic diversity. Its seeds are dispersed via a zoochorous syndrome, meaning they are spread by animals, which plays a critical role in the plant's life cycle and distribution within its habitat. Morphologically, the seeds possess a mean length of 12.3 mm, though they exhibit significant variation with lengths ranging from a minimum of 15 mm to a maximum of 30 mm. The seed mass is highly consistent, with both the mean, minimum, and maximum values recorded at 0.227 g, suggesting a highly uniform seed weight across the population.

Dispersal syndrome :

zoochorous

Seed length max:

30 mm

Seed length mean:

12.3 mm

Seed length min:

15 mm

Seed mass mean:

0.227 g

Self fertilization :

absent

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Protium copal has 2 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Terpene, Triterpenes.

Terpene

1. Genes

Triterpenes

1. Journal of ethnopharmacology

Conditions

Protium copal has 1 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include antianxiety effects.

Antianxiety effects

1. Journal of ethnopharmacology

Preparations

Protium copal has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include incense.

Incense

1. Journal of ethnopharmacology