Aloe mutans
Aloe labiaflava
Aloe graciliflora
Aloe barbertoniae
Aloe longibracteata
Aloe davyana var. subolifera
Aloe comosibracteata
Aloe davyana
Aloe greatheadii var. davyana (Schonl.) H.F. Glen & D.S. Hardy
Spotted aloe
Aloe greatheadii var. davyana is native to the northern provinces of South Africa, including the Free State and northern parts of KwaZulu-Natal, and it is very common in Gauteng. The species, greatheadii, is named for Dr. J. B. Greathead, who collected it.
Plants: Basal rosettes are up to 1½′ (45 cm) wide, and do not have a stem. They occur singly or in groups of up to fifteen plants.
Leaves: Up to 12 ⨉ 2–3″ (30 ⨉ 6–8 cm), green to deep ruby red, triangular to lanceolate. Leaf edges have sharp mean-looking dark brown teeth. The upper surface of each leaf is green and striped above with oblong white spots arranged in more or less distinct bands, while the lower surface is whitish green and usually without spots.
Flowers: Flower stalks have up to 6 branches, up to 5′ (1.5 m) high. Racemes of flowers are 6–8″ (15–20 cm) long. Flowers are pale pink to red. Flowers appear from June to July—African midwinter.
Fruits: Dehiscent capsules release seeds that are wind-dispersed.
Habitats: It grows on stony quartzite formation on hills and slopes in the Kalahari thornveld in grassland, or in the the shelter of thorny bushes.
Online References:
Www.aloes.wz.cz (Aloe greatheadii)
2/26/2010 · San Diego Zoo, San Diego, California · ≈ 3 × 2′ (94 × 62 cm) 
| Kingdom | Plantae | Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin) |
| Subkingdom | Tracheobionta | Vascular plants—plants with a “circulatory system” for delivering water and nutrients |
| Division | Magnoliophyta | Flowering plants, also known as angiosperms |
| Class | Liliopsida | Monocots (plants with a single seed leaf); includes the lily family |
| Subclass | Liliidae | Includes lilies, orchids, and many others |
| Order | Asparagales | A diverse group that includes asparagus |
| Family | Xanthorrhoeaceae | Aloes, many tropical plants, flax lilies, daylilies, many others |
| Genus | Aloe | Means “goddess” in ancient Sanskrit, for its reputed use as a beauty aid; some sources suggest that the name comes from Alloeh, meaning “shining bitter substance” |
| Species | greatheadii | For John Baldwin Smithson Greathead (1854-1910), medical practitioner, district surgeon, and writer, who co-collected the type specimen with Dr S. Schönland |
| var. | davyana | For Dr J. Burtt Davy, head of the Botany Division (which later became the Botanical Research Institute) of the Department of Agriculture in 1903 |
Aloe greatheadii var. davyana description by Thomas H. Kent, not updated.
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