Caralluma praegracilis Oberm.
Very Slender Caralluma
A South African species with notably thin stems, hence the epithet 'praegracilis' (very slender/graceful). Described by Obermeyer, it is one of the most slender Caralluma on the African continent. Its filiform to subcylindrical stems, barely 5–8 mm in diameter, rise erect or slightly decumbent in scattered groups. Inhabits arid and semi-arid zones of southern Africa on stony or sandy soils. Flowers are small and dull-coloured, with a characteristic simple corona.
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Overview
| Category | Classification |
|---|---|
| Family | Apocynaceae |
| Genus | Caralluma |
| Growth Habit | Herbaceous succulent with filiform stems, caespitose. |
| Conservation Status | No official assessment; rare in collections. |
| pH Target | 6.5–7.5 |
| Type | Sandy, gravelly, very well-draining. |
Origin & Habitat
Requirements
Soil & Substrate
Type
Sandy, gravelly, very well-draining.
groups Beneficial Associations
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Propagation Strategy
S
O
Every 3 years.
Once in spring, highly diluted succulent fertilizer.
Uses & Applications
Precautions / Toxicity
No specific studies; standard caution.
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"The most striking diagnostic feature is the extreme slenderness of the stems, which immediately distinguishes it from most South African Caralluma."
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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.