Caralluma decaisneana (Lem.) N.E.Br.
Decaisne's Caralluma
An Arabian succulent originally described by Lemaire and transferred by N.E. Brown, currently recognised as a synonym of Boucerosia decaisneana. Inhabits arid zones of the Arabian Peninsula, with a disjunct subspecies in Morocco (subsp. hesperidum). Robust quadrangular stems and dark-coloured flowers with fetid odour are its main features.
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Overview
| Category | Classification |
|---|---|
| Family | Apocynaceae |
| Genus | Caralluma |
| Growth Habit | Robust erect-stemmed succulent, forming clumps in hot arid zones |
| Conservation Status | Not formally assessed; the Moroccan subsp. hesperidum may be threatened |
| pH Target | 7.0–8.5 |
| Type | Calcareous sandy, poor and alkaline soil |
Origin & Habitat
Requirements
Soil & Substrate
Type
Calcareous sandy, poor and alkaline soil
groups Beneficial Associations
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Propagation Strategy
C
W
Every 3 years in spring
Once in summer, diluted mineral fertiliser
Uses & Applications
Precautions / Toxicity
No known toxicity; flowers with very intense odour
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"The Moroccan subsp. hesperidum represents a notable biogeographical disjunction between Arabia and the western Mediterranean. Synonymy with Boucerosia decaisneana is widely accepted in modern treatments."
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Scientific Integrity
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Sources
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Discussion
Disclaimer
This species record is provided for educational and informational purposes only. Jardín Roca Negra does not guarantee the accuracy or completeness of the data. Content is community-curated and may be subject to revision; it should not replace advice from a qualified botanist. This species may be toxic, invasive, or subject to legal restrictions — verify before handling or cultivating. Jardín Roca Negra accepts no liability for any harm arising from reliance on this information. Images are reproduced under Creative Commons or equivalent free licenses; credits are noted below each image.