Astroloba rubriflora (L.Bolus) Gideon F.Sm. & J.C.Manning
Red-flowered astroloba
Astroloba rubriflora is the most striking species in the genus due to its deep red flowers, unusual in a group where white or cream flowers predominate. Previously classified in the monotypic genus Poellnitzia, it was transferred to Astroloba. Endemic to the Western Cape, it grows in the Worcester and McGregor area.
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© S Molteno, Wikimedia Commons
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Overview
| Category | Classification |
|---|---|
| Family | Asphodelaceae |
| Genus | Astroloba |
| Growth Habit | Compact 5-ranked spiral rosette with triangular dark-green leaves; reaches 10–20 cm tall; the red flowers on a slender raceme distinguish it from all other Astroloba species. |
| Conservation Status | Not Evaluated (NE) by IUCN; relatively restricted distribution in the Western Cape, mainly Worcester and McGregor. |
| pH Target | 6.0–7.0 |
| Type | Well-drained, slightly sandy with organic matter |
Origin & Habitat
Morphology
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Requirements
Soil & Substrate
Type
Well-drained, slightly sandy with organic matter
groups Beneficial Associations
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Propagation Strategy
T
O
Every 2–3 years or when roots fill the pot
Diluted cactus fertilizer once a month in spring and summer; no fertilizing in autumn-winter
Uses & Applications
Precautions / Toxicity
Not toxic to humans
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Plant Health
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"The taxonomic history of this species is fascinating: for decades it was the sole member of the monotypic genus Poellnitzia (honouring botanist Rudolf Poellnitz). Its transfer to Astroloba by Smith & Manning reflected modern phylogenetic consensus. Its red flowers make it unmatched among compact indoor asphodelaceans."
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Scientific Integrity
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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.