honey buchu

Names and Synonyms

Common Names

• honey buchu
• mountain buchu
• Anise Buchu
• Round Leaf Buchu
• Round Leaved Buchu
• Round-Leaf Buchu
• Round-Leaved Buchu
• Rounds
• Short Buchu

Scientific Names

Accepted name

Synonyms

• Parapetalifera betulina
• Bucco betulina
• Barosma orbicularis
• Barosma betulina
• Hartogia betulina

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 and the class Equisetopsida. Within the subclass Magnoliidae, it is organized under the order Sapindales and the family Rutaceae. Finally, it is identified by its specific genus, Agathosma.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily found within the specific region of Southern Africa. Its distribution is notably concentrated throughout the Cape Provinces. Within this area, it thrives in the unique environmental conditions offered by the local landscape. Consequently, the species remains endemic to these particular southern territories. Understanding this limited range is essential for studying its natural habitat.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Agathosma betulina is defined by its specific niche within montane environments, where it thrives across a distinct altitudinal gradient. This species is typically found inhabiting ecosystems situated at elevations ranging from a minimum of 800 m AMSL to a maximum of 2000 m AMSL. Within this vertical range, the plant's distribution is influenced by the varying climatic conditions, moisture availability, and soil compositions characteristic of these mid-to-high altitude zones. The ability to persist across such a wide elevational span suggests an adaptation to diverse temperature regimes and varying levels of atmospheric pressure found throughout these montane habitats.

Elevational range max:

2000 m AMSL

Elevational range min:

800 m AMSL

Life history

The life history of Agathosma betulina is characterized by its nature as a perennial plant, allowing it to persist through multiple growing seasons rather than completing its cycle in a single year. Throughout its lifespan, the plant maintains an evergreen status, retaining its foliage continuously rather than shedding it seasonally.

Deciduousness :

evergreen

Lifecycle :

perennial

Morphology

The morphology of Agathosma betulina is characterized by a woody growth form, specifically categorized as a shrub. This plant is a self-supporting species that does not function as a climber or a liana, nor does it exhibit parasitic or epiphytic behavior, maintaining an independent and terrestrial existence. In terms of stature, the plant typically reaches a mean height of 2 m, though its size can vary significantly, with recorded heights ranging from a minimum of 0.6 m to a maximum of 1 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

shrub

Parasite :

independent

Plant height max:

1 m

Plant height mean:

2 m

Plant height min:

0.6 m

Woodiness :

woody

Physiology

The physiology of Agathoasma betulina is characterized by its specific metabolic and nutritional processes, most notably its reliance on the C3 photosynthetic pathway for carbon fixation. Unlike plants that utilize C4 or CAM pathways to optimize water usage in arid environments, this species utilizes the standard C3 mechanism, where CO2 is initially fixed into a three-carbon compound during the Calvin cycle. Furthermore, the plant does not function as a nitrogen fixer; it lacks the symbiotic relationship with diazotrophic bacteria required to convert atmospheric nitrogen into bioavailable forms, meaning it must rely on the uptake of nitrates or ammonium present within the soil substrate to meet its nitrogenous requirements for protein synthesis and growth.

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Reproduction

The reproduction of Agathosma betulina involves the production of seeds that exhibit specific quantitative variations in weight. Based on botanical data, the seeds produced by this species show a mean seed mass of 0.0111 g. There is notable individual variation within the seed population, with recorded values ranging from a minimum mass of 0.0063 g to a maximum mass of 0.0159 g. This range in seed mass reflects the inherent variability in the plant's reproductive output and resource allocation during seed development.

Seed mass max:

0.0159 g

Seed mass mean:

0.0111 g

Seed mass min:

0.0063 g

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Agathosma betulina has 120 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include (+)-Isopulegone, (+)-Limonene, (+)-Linalool, (+)-Menthone, (+)-Pulegone.

(+)-Isopulegone

1. Dr. Duke

(+)-Limonene

1. Dr. Duke

(+)-Linalool

1. Dr. Duke

(+)-Menthone

1. Dr. Duke

(+)-Pulegone

1. Dr. Duke

(-)-Isopulegone

1. Dr. Duke

(-)-Pulegone

1. Dr. Duke

(-)-isomenthone

1. Dr. Duke

1,8-Cineol

1. Dr. Duke

3-METHYL CYCLOHEXANONE

1. Dr. Duke

Activities

Agathosma betulina has 555 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Diuretic, (-)-Chronotropic, (-)-Inotropic, 11B-HSD-Inhibitor, 5-HT-Inhibitor.

Diuretic

1. Dr. Duke
2. Scottish medical journal

(-)-Chronotropic

1. Dr. Duke

(-)-Inotropic

1. Dr. Duke

11B-HSD-Inhibitor

1. Dr. Duke

5-HT-Inhibitor

1. Dr. Duke

5-Lipoxygenase-Inhibitor

1. Dr. Duke

ACE-Inhibitor

1. Dr. Duke

AChE-Inhibitor

1. Dr. Duke

AP-1-Inhibitor

1. Dr. Duke

ATPase-Inhibitor

1. Dr. Duke

Conditions

Agathosma betulina has 1 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include rheumatism.

Rheumatism

1. Scottish medical journal

Preparations

Agathosma betulina has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include essential oils.

Essential oils

1. Plant disease