desert rose

Names and Synonyms

Common Names

• desert-rose
• impala-lily
• mock azalea
• desert rose
• impala lily

Scientific Names

Accepted name

Synonyms

• Adenium somalense var. caudatipetalum
• Adenium somalense var. crispum
• Nerium obesum
• Adenium micranthum
• Cameraria obesa
• Adenium coetaneum
• Adenium honghel
• Adenium obesum subsp. socotranum
• Adenium obesum subsp. somalense
• Adenium speciosum
• Adenium socotranum
• Adenium somalense
• Adenium tricholepis
• Adenium arabicum
• Adenium arboreum

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified within the phylum Streptophyta and the class Equisetopsida. Following the subclass Magnoliidae, it is organized under the order Gentianales and the family Apocynaceae. Ultimately, its taxonomic identity is defined by its placement in the genus Adenium.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical presence across several regions within West Tropical Africa. It can be found growing in the nation of Benin, where it occupies local ecological niches. The distribution extends further into Burkina, contributing to its regional availability. Additionally, the species is documented within the borders of Ghana. Finally, its range continues through Guinea-Bissau and Guinea, marking a significant presence in these West African territories.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Adenium obesum is defined by its specialized adaptation to arid and semi-arid environments, where it thrives primarily in dry bushland. It demonstrates a particular preference for rocky sites, utilizing crevices and stony substrates to anchor its succulent root system, while also maintaining a presence in woodland ecosystems. Its distribution extends to coastal regions, where it occupies niches characterized by seasonal moisture fluctuations and intense solar exposure. This ability to inhabit diverse, water-stressed landscapes highlights its evolutionary strategy of moisture conservation and resilience within nutrient-poor, well-drained soils.

Habitat :

in dry bushland, especially in rocky sites, on the coast also in woodland

Life history

The life history of Adenium obesum is characterized by its nature as a perennial plant, allowing it to persist through multiple growing seasons and establish a long-lived presence in its natural habitat. As a nanophanerophyte, its growth form is defined by woody stems that remain relatively low to the ground, often developing a prominent, succulent caudex that serves as a vital water storage organ. The species exhibits a deciduous habit, typically shedding its foliage during periods of environmental stress or seasonal dormancy to conserve moisture, a strategy essential for its survival in arid climates.

Deciduousness :

deciduous

Life form :

nanophanerophyte

Lifecycle :

perennial

Morphology

The morphology of Adenium obesum is characterized by a woody growth form, primarily manifesting as a shrub. It is a terrestrial, self-supporting plant that functions independently, lacking any parasitic or epiphytic tendencies. In terms of its physical stature, the plant exhibits a variable height, with recorded minimum values of approximately 1.22 m and maximum values reaching roughly 1.83 m, though it maintains an average plant height of approximately 2.5 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

shrub

Parasite :

independent

Plant height max:

1.828822238 m

Plant height mean:

2.5 m

Plant height min:

1.219214826 m

Woodiness :

woody

Physiology

The physiology of Adenium obesum is characterized by specialized adaptations for survival in arid environments, most notably through its highly modified stem structure known as a caudex. This swollen, succulent base functions as a primary water reservoir, allowing the plant to maintain turgor pressure and metabolic processes during prolonged periods of drought. The plant utilizes Crassulacean Acid Metabolism (CAM) or a modified C3 photosynthetic pathway depending on environmental stress, enabling it to optimize water-use efficiency by regulating stomatal conductance. Its root system is designed for rapid moisture absorption following infrequent rainfall, while its leaf physiology focuses on minimizing transpiration through thick cuticles. Regarding its nutrient cycling capabilities, Adenium obesum is not a nitrogen fixer; it lacks the symbiotic relationship with rhizobia bacteria required to convert atmospheric nitrogen into usable forms, meaning it relies entirely on the availability of nitrogen within the soil substrate for its protein synthesis and vegetative growth.

Nitrogen fixer :

no

Reproduction

The reproduction of Adenium obesum is characterized by a complex interplay of biotic interactions and specialized dispersal mechanisms. The plant utilizes a biotic pollination syndrome, relying heavily on animal vectors to facilitate the transfer of pollen between flowers. Specifically, the pollination process is primarily insect-driven, involving various insect species that visit the blooms to ensure successful fertilization. Following successful pollination and the development of seeds, the plant employs an anemochorous dispersal syndrome. This means that the seeds are designed for wind dispersal, allowing them to be carried away from the parent plant by air currents, which facilitates the colonization of new habitats.

Dispersal syndrome :

anemochorous

Pollination syndrome :

insect

Pollination syndrome :

biotic

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Adenium obesum has 2 reported plant parts identified across 3 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf, stem.

Leaf

1. Protein and peptide letters
2. Frontiers in pharmacology

Stem

1. Journal of traditional and complementary medicine

Chemicals

Adenium obesum has 19 reported phytochemicals identified across 3 scientific publications and several other databases. The most consistently reported chemicals include Cardiac Glycosides, 16-Acetylstrospeside, 3,4-dihydroxycinnamic acid (r)-1-carboxy-2-(3,4-dihydroxyphenyl) ethyl ester, 3-O-Methylkaempferol, Acetyldigitoxigenin.

Cardiac Glycosides

1. Saudi journal of biological sciences
2. Chemical & pharmaceutical bulletin

16-Acetylstrospeside

1. Journal of pharmaceutical sciences

3,4-dihydroxycinnamic acid (r)-1-carboxy-2-(3,4-dihydroxyphenyl) ethyl ester

1. Journal of traditional and complementary medicine

3-O-Methylkaempferol

1. Journal of pharmaceutical sciences

Acetyldigitoxigenin

1. Saudi journal of biological sciences

CADMIUM

1. Biological trace element research

Cardiac glycoside

1. Journal of Ayurveda and integrative medicine

Flavonoid

1. Journal of Ayurveda and integrative medicine

Flavonoids

1. Saudi journal of biological sciences

Honghelin

1. Journal of pharmaceutical sciences

Activities

Adenium obesum has 6 reported activities identified across 3 scientific publications and several other databases. The most consistently reported activities include Anticancer, Antimicrobial, Antioxidant, Antibacterial, Cytotoxic.

Anticancer

1. Saudi journal of biological sciences
2. Frontiers in pharmacology

Antimicrobial

1. Frontiers in pharmacology
2. Journal of traditional and complementary medicine

Antioxidant

1. Frontiers in pharmacology
2. Journal of traditional and complementary medicine

Antibacterial

1. Saudi journal of biological sciences

Cytotoxic

1. Frontiers in pharmacology

Neuroprotective

1. Journal of Ayurveda and integrative medicine

Medicinal Uses

Adenium obesum has 15 reported medicinal uses identified across 3 scientific publications and several other databases. The most consistently reported uses include Liver cancer, Parkinson's disease, Parkinsonism, breast cancer, cancer.

Most Reported Uses

Preparations