Caralluma nilagiriana Kumari & Subba Rao
Nilgiri Caralluma
A highly rare succulent endemic to the Nilgiri Hills of Tamil Nadu, India, known from only a few localities above 2,000 m elevation in the Western Ghats. Stems are erect, tetragonal, and greyish-green, forming compact small clumps. Flowers display a star-shaped corolla of five triangular petals with a characteristic central corona. Described by Kumari and Subba Rao in the late 20th century; listed among threatened species of the Indian flora.
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Overview
| Category | Classification |
|---|---|
| Family | Apocynaceae |
| Genus | Caralluma |
| Growth Habit | Succulent herb, caespitose, facultative geophyte. |
| Conservation Status | Endangered (endemic species with very restricted distribution in the Nilgiris, India). |
| pH Target | 6.0–7.5 |
| Type | Rocky, sandy, very well-drained. |
Origin & Habitat
Requirements
Soil & Substrate
Type
Rocky, sandy, very well-drained.
groups Beneficial Associations
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Propagation Strategy
G
O
Every 2–3 years or when roots emerge from drainage holes.
Diluted cactus fertilizer once in spring and once in early summer.
Uses & Applications
Precautions / Toxicity
Presumed low toxicity, though no formal studies exist for this species.
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"Species of high conservation value; ex situ cultivation contributes to preserving the genetic variability of this threatened endemic."
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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.