Kalanchoe gastonis-bonnieri

Names and Synonyms

Scientific Names

Accepted name

Distribution

This plant exhibits a wide-ranging geographical distribution across several continents. In Europe, its presence is noted within the Mediterranean region of Spain. Its reach extends into West Tropical Africa, specifically throughout Senegal. Furthermore, it can be found in West-Central Tropical Africa in Cameroon and across East Tropical Africa in Kenya. Finally, the species is also documented in South Tropical Africa within Zimbabwe.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Kalanchoe gastonis-bonnieri is defined by its adaptation to specific montane environments, where it thrives within a distinct altitudinal niche. This species is primarily found in high-altitude habitats, maintaining an elevational range that spans from a minimum of 1200 m AMSL to a maximum of 2600 m AMSL. Within this vertical distribution, the plant occupies specialized microclimates that support its succulent physiology, often favoring rocky outcrops or well-draining substrates common in these highland regions. Its presence across this 1400-meter gradient suggests a capacity to tolerate the varying temperature fluctuations and atmospheric pressures characteristic of mid-to-high elevation tropical or subtropical montane ecosystems.

Elevational range max:

2600 m AMSL

Elevational range min:

1200 m AMSL

Life history

The life history of Kalanchoe gastonis-bonnierii is characterized by its status as a perennial plant, allowing it to persist through multiple growing seasons. This species exhibits a highly efficient and specialized reproductive strategy centered around its unique morphological adaptations. While it can propagate through seeds, its primary mode of life cycle progression is asexual reproduction via specialized leaf margins. The edges of its succulent leaves are lined with numerous small, plantlet-bearing notches; as these notches develop into miniature clones or plantlets, they eventually detach and drop to the substrate to establish new individuals. This vegetative propagation allows the plant to rapidly colonize available space and ensure survival even in fluctuating environmental conditions. Throughout its perennial lifespan, the plant maintains a rosette-forming growth habit, focusing energy on succulent leaf development to store water, which supports its long-term survival and periodic flowering cycles.

Lifecycle :

perennial

Morphology

The morphology of Kalanchoe gastonis-bonnieri is characterized by a non-woody growth form, specifically classified as a succulent herb or forb. It functions as an independent organism, meaning it does not exhibit parasitic behavior, and is strictly terrestrial in its ecological habit rather than being aquatic, semiaquatic, or epiphytic. In terms of structural support, the plant is self-supporting, lacking the climbing mechanisms associated with lianas or vines.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Kalanchoe gastonis-bonnieri is characterized by specialized metabolic and structural adaptations designed for survival in arid environments. The plant utilizes the Crassulacean Acid Metabolism (CAM) photosynthetic pathway, a temporal separation of carbon fixation that allows it to open its stomata at night to minimize transpirational water loss while storing CO2 as organic acids. This metabolic efficiency is supported by its distinct succulence, as the plant possesses thickened, fleshy leaves that serve as specialized water-storage tissues. This combination of CAM photosynthesis and high degree of succulence enables the species to maintain turgor pressure and metabolic activity even during prolonged periods of drought.

Photosynthetic pathway :

CAM

Succulence :

yes

Reproduction

Reproduction in Kalanchoe gastonis-bonnieri occurs through both sexual and asexual mechanisms, with sexual reproduction driven by the production of minute seeds within specialized floral structures. The botanical characteristics of these seeds are highly uniform, exhibiting a consistent seed mass across the population. Specifically, the seed mass is measured at a mean of 2e-05 g, a value that remains constant at both the maximum and minimum thresholds, with a recorded seed mass of 2e-05 g. This extreme lightness facilitates dispersal, while the plant's ability to propagate vegetatively through leaf cuttings further ensures its survival and spread in various environments.

Seed mass mean:

2e-05 g

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Kalanchoe gastonis-bonnieri has 5 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Anthocyanins, Coumarins, Saponins, Sterols, Triterpenes.

Anthocyanins

1. Dr. Duke

Coumarins

1. Dr. Duke

Saponins

1. Dr. Duke

Sterols

1. Dr. Duke

Triterpenes

1. Dr. Duke

Activities

Kalanchoe gastonis-bonnieri has 34 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Antiapoptotic, Antiarthritic, Anticancer, Anticarcinogenic, Anticollegenase.

Antiapoptotic

1. Dr. Duke

Antiarthritic

1. Dr. Duke

Anticancer

1. Dr. Duke

Anticarcinogenic

1. Dr. Duke

Anticollegenase

1. Dr. Duke

Antidiabetic

1. Dr. Duke

Antielastase

1. Dr. Duke

Antihepatomic

1. Dr. Duke

Antihyperglycemic

1. Dr. Duke

Antihyperinsulinemic

1. Dr. Duke