Argyroderma formosum L.Bolus
Beautiful Argyroderma
Argyroderma formosum L.Bolus is a mesemb from the South African Namaqualand and Richtersveld, whose name 'formosum' (beautiful, elegant) reflects L.Bolus's appreciation for the formal beauty of its pink to purple flowers and the elegance of its silvery succulent body. Its flowers are larger compared to several other species in the genus, making it one of the most ornamental Argyroderma.
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Overview
| Category | Classification |
|---|---|
| Family | Aizoaceae |
| Genus | Argyroderma |
| Growth Habit | Acaulescent mesemb, solitary or caespitose; ovoid body 2–5 cm. Very smooth silvery-grey surface. Large pink-purple flowers. Winter grower. |
| Conservation Status | No formal IUCN assessment; endemic to Namaqualand and Richtersveld. |
| pH Target | 6.5–7.5 |
| Type | Very sandy or gravelly, extremely well-drained |
Origin & Habitat
Morphology
Well-proportioned ovoid body 2–5 cm, silvery-grey and smooth. Moderate apical fissure.
ecoLarge flowers 3–4.5 cm in diameter, deep pink to violet-purple; especially showy. Autumn–winter blooming.
ecoDeep and robust root system, adapted to the quartzitic substrate of the Richtersveld.
ecoOne of the most ornamental species in the genus due to the size and intense color of its flowers. Highly prized in mesemb collections.
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Requirements
Soil & Substrate
Type
Very sandy or gravelly, extremely well-drained
groups Beneficial Associations
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Propagation Strategy
- 1 Sow in fine sand in autumn
- 2 Keep moist, 15–22 °C
- 3 Ventilate daily
- 4 Transplant at 12 months
- 1 Only in autumn
- 2 Callous 2–3 days
- 3 Mineral sand; no watering until activity
F
Watering in summer
Every 3–4 years in autumn
Once in autumn, very diluted
Uses & Applications
Precautions / Toxicity
Non-toxic.
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Plant Health
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"The flowers of A. formosum are consistently the largest and most colorful within the genus Argyroderma, according to L.Bolus's descriptions and field observations in the Richtersveld. Its purple-violet blooming is unusual in the genus and makes it especially sought by mesemb collectors."
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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.