Botany & Taxonomy
Scientific classification, morphology and distribution of Ilex guayusa Scientific name of the Guayusa plant. First described in 1901 by Theodor Loesener. Synonyms: Ilex guayusa var. macrophylla.Ilex guayusa
- Scientific Classification
- Morphology
- Distribution and Habitat
- Ecology
Scientific Classification
Ilex Botanical genus of hollies with about 400-600 species worldwide. This genus includes Ilex guayusa, Ilex paraguariensis (Mate), and Ilex vomitoria (Yaupon). Botanical family of holly plants to which Ilex guayusa belongs. The family comprises about 400–600 species, mainly in tropical and temperate regions. Botanical genus of hollies with about 400-600 species worldwide. This genus includes Ilex guayusa, Ilex paraguariensis (Mate), and Ilex vomitoria (Yaupon). Purine alkaloid with stimulating effects on the central nervous system. Guayusa contains 1.7-7.6% caffeine (dry weight), depending on variety, location, and processing.Ilex
Aquifoliaceae
Ilex
caffeine
| Taxonomic Rank | Designation |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta (Vascular plants) |
| Class | Angiosperm (Angiosperms) |
| Subclass | Asterids |
| Order | Aquifoliales |
| Family | Aquifoliaceae |
| Genus | Ilex |
| Species | Ilex guayusa Loes. |
Synonyms and Related Species
Synonym: Ilex utilis Moldenke
Related caffeine-containing species:
- Ilex paraguariensis (Yerba Mate) - South America
- Ilex vomitoria (Yaupon) - North America
- Ilex cassine (Dahoon Holly) - North America
Morphology
Ilex guayusa is an evergreen Botanical term for plants that retain leaves year-round. Ilex guayusa is an evergreen tree with multi-year leaf longevity.evergreen
Growth Form
Evergreen tree or shrub that can reach heights of 6-30 meters in nature. In cultivation, the plant is kept at 2-4 meters through regular pruning to facilitate harvesting.
Leaves
The leaves are alternate, simple, leathery and glossy. They are elliptical to lanceolate in shape, 5-20 cm long and 2-7 cm wide. The leaf margin is serrated with small teeth. The upper leaf surface is dark green and glossy, the underside lighter. The leaves contain the highest concentration of bioactive compounds Chemical substances in plants with physiological effects on the human organism. Guayusa contains over 100 identified bioactive compounds.bioactive compounds
Flowers and Fruits
Ilex guayusa is dioecious Botanical term for plants with separate male and female individuals. Ilex guayusa is dioecious, making flower formation extremely rare (first flowers documented after 77 years).dioecious
Root System
Shallow to medium-deep root system well adapted to the nutrient-poor but water-rich soils of the Amazon. The roots often form mycorrhizal associations with fungi.
Distribution and Habitat
Ilex guayusa is endemic Biological term for species occurring only in a limited geographic area. Ilex guayusa is endemic to the western Amazon basin (Ecuador, Peru, Colombia).endemic
Native Range
The species is native to Ecuador (provinces of Napo, Pastaza, Morona-Santiago, Zamora-Chinchipe), Peru (Loreto, San Martín) and possibly Colombia (Putumayo). The center of distribution is in the Ecuadorian Amazon.
Habitat Requirements
Ilex guayusa grows in tropical rainforests at elevations of 200-2,000 meters above sea level, with optimal conditions between 400-1,200 meters. The plant prefers:
- Temperature: 18-26°C (average)
- Precipitation: 2,000-4,000 mm/year
- Humidity: 80-95%
- Soils: Well-drained, slightly acidic soils (pH 4.5-6.5)
- Light: Partial shade to full sun (in agroforestrysystems)
agroforestry
Land use system combining trees and shrubs with agricultural crops. Guayusa is traditionally cultivated in Chakra systems, a form of indigenous agroforestry.
More Info
Cultivation
Today, Ilex guayusa is cultivated almost exclusively in traditional chakra Kichwa term for traditional agroforestry systems in the Amazon region. Chakras are multi-layered forest gardens with 50-100 guayusa plants per hectare, combined with fruits, vegetables, and medicinal plants.chakra
Ecology
Ilex guayusa plays an important ecological role in Amazon agroforestry systems and interacts with various organisms.
Pollination
Due to the extreme rarity of flowers, natural pollination is barely researched. Pollination is presumably by insects (entomophily), possibly by bees or small flies.
Propagation
In traditional cultivation, propagation occurs almost exclusively vegetatively through cuttings or root cuttings, as seeds are extremely rare. Modern methods also include tissue culture (in vitro propagation) for commercial production.
Biodiversity in Chakra Systems
Guayusa is grown in polycultural chakra systems that exhibit high biodiversity. Typical companion plants are cacao (Theobroma cacao), bananas (Musa spp.), cassava (Manihot esculenta), various palms and medicinal plants. These systems provide habitat for numerous insects, birds and other animals.
Conservation Status
Ilex guayusa is not listed on the IUCN Red List, as the species exists mainly in cultivation. However, genetic diversity is limited, as most plants are propagated vegetatively. Conservation programs focus on collecting and conserving genetic material from different regions.
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