Calibanus glassianus L.Hern. & Zamudio
Glass's calibanus
Calibanus glassianus is a recently described species, named in honor of horticulturist and cactus expert Charles Glass. It differs from C. hookeri by its smaller and flattened caudex, and from C. caespitosus by the less dense arrangement of its leaves. It is the rarest species in the genus and virtually absent from cultivation outside Mexico.
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Overview
| Category | Classification |
|---|---|
| Family | Asparagaceae |
| Genus | Calibanus |
| Growth Habit | Geophyte with caudex, solitary |
| Conservation Status | Not Evaluated (IUCN); likely Vulnerable due to restricted distribution and collection pressure |
| pH Target | 6.0–7.5 |
| Type | Stony, nutrient-poor, very porous |
Origin & Habitat
Requirements
Soil & Substrate
Type
Stony, nutrient-poor, very porous
groups Beneficial Associations
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Propagation Strategy
S
C
Every 4–5 years, disturbing the roots as little as possible.
A single annual application in spring, very diluted mineral fertilizer.
Uses & Applications
Precautions / Toxicity
No documented toxicity
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"Species described by L. Hernández and Zamudio in the latter decades of the 20th century. Images in circulation are scarce and some may correspond to C. hookeri. It is advisable to verify the provenance of material before purchasing."
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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.