Aloe

Lore & Background

The genus name Aloe is derived from the Arabic word al'uluh, meaning 'bitter and shiny substance', or from Hebrew ahalim. Most Aloe species have a rosette of large, thick, fleshy leaves, with tubular flowers that are frequently yellow, orange, pink, or red, borne densely clustered and pendant at the apex of leafless stems. Many species appear stemless, while others have branched or unbranched stems, and some South African species are tree-like. The APG IV system (2016) places the genus in the family Asphodelaceae, subfamily Asphodeloideae. In the past, it has been assigned to the families Liliaceae and Aloeaceae. Historical use of various Aloe species is well documented, though clinical effectiveness evidence is relatively limited. Only a few species were traditionally used as herbal medicines, with Aloe vera being the most common, along with A. perryi and A. ferox. The Ancient Greeks and Romans used Aloe vera to treat wounds, and in the Middle Ages, the yellowish liquid inside the leaves was used as a purgative. Unprocessed aloe containing aloin is generally used as a laxative, while processed juice usually does not contain significant aloin.

Reader's Guide

Aloe species are frequently cultivated as ornamental plants in gardens and pots, and many are valued by collectors of succulents. Aloe vera is used both internally and externally as folk or alternative medicine, and around 75% of Aloe species are used locally for medicinal purposes. The plants can be made into soaps or other skin care products. Numerous cultivars are grown, with Aloe 'Lizard Lips' having gained the Royal Horticultural Society's Award of Garden Merit. Aloe variegata has been planted on graves in the belief that this ensures eternal life. Most aloe juices today do not contain significant aloin. According to Cancer Research UK, a potentially deadly product called T-UP is made of concentrated aloe and promoted as a cancer cure, but there is no evidence that aloe products can help prevent or treat cancer in humans. Aloe species are also used in essential oils as a safety measure to dilute solutions before application to the skin. Aloe perryi, A. barbadensis, A. ferox, and hybrids are listed as natural flavoring substances in the US government Electronic Code of Federal Regulations, and Aloe socotrina is said to be used in yellow Chartreuse.

Did You Know?

• The genus name Aloe is derived from the Arabic word al'uluh, meaning 'bitter and shiny substance'.
• Aloe variegata has been planted on graves in the belief that this ensures eternal life.
• Aloe socotrina is said to be used in yellow Chartreuse.

Physical Form and the Summer Bloom

The fez aloe presents as a compact, stemless succulent that grows no taller than roughly a foot and a half, with its diameter matching that height in a neatly proportioned sphere. Its glaucous, bluish-green leaves curve inward so dramatically that the whole plant reads as a tight, rounded rosette rather than the open, spreading form many other aloes display. This spherical architecture gives the species its common "fez" nickname, evoking the small, brimless hat it resembles. When the plant does flower, typically during the Southern Hemisphere winter months of July and August, it sends up a single cylindrical spike reaching about the same height as the rosette itself, though on occasion the spike forks into two. The most striking visual detail of the bloom is the deep purple colour of the exposed filament portions, a vivid contrast against the muted green of the foliage. The overall effect is one of quiet, contained elegance in a plant that never exceeds a modest footprint.

The Botanist Who Gave It a Name

Pegler spent her fieldwork years gathering specimens first in the Kentani region and later in the areas surrounding Johannesburg and Rustenburg, documenting the botanical richness of the Highveld. As her eyesight and general health deteriorated over time, she narrowed her research focus to the smaller, more manageable worlds of algae and fungi. Despite these physical limitations, her contributions to South African botany were recognised with the exceptional distinction of membership in the Linnaean Society, a mark of considerable professional respect. The aloe she helped bring to scientific attention does not exist in isolation in the wild; it is known to form natural hybrids with both Aloe marlothii and Aloe davyana, suggesting that in its native habitat the species occupies a fluid, interbreeding position within a broader complex of related aloes rather than standing as a rigidly separate taxon.

A Home No Wider Than Two Mountain Ranges

Aloe peglerae is strictly endemic to South Africa, and even within that country its range is remarkably constrained. The species occurs only in the Gauteng and North West provinces, and even there it is confined to the northern dip slopes of just two parallel mountain ranges: the Magaliesberg and the Witwatersberg, the latter sitting immediately to the south of the former. This means the entire global wild population of the fez aloe is distributed across a narrow band of foothill terrain, with no significant populations found anywhere else on the continent. The restricted and localised nature of this distribution makes the species inherently vulnerable; any environmental change, development pressure, or disturbance affecting even a small stretch of those northern slopes can have an outsized impact on the total number of individuals remaining. The fact that the plant is found only along dip slopes rather than across broad plateaus or valleys further narrows the specific micro-habitat it requires, compounding the fragility of its already small geographic footprint.

Poaching, Decline, and the Race to Protect

The fez aloe is classified as endangered and is experiencing a rapid decline in the wild, driven primarily by habitat destruction and the illegal collection of plants from their natural sites. Because the species grows slowly, poachers specifically target mature individuals, removing the very plants most capable of reproducing and sustaining the population. The Red List of South African Plants elevates its status to critically endangered, citing not only the poaching pressure but also the species' highly localised range, its small number of discrete population groups, and a documented 43 percent reduction in population over a ten-year period. To address the trade dimension of the threat, CITES has placed Aloe peglerae on Appendix II, a listing that mandates special protections and permits for international commerce, aiming to ensure that the legal plant trade does not further erode the already precarious wild population. Together, these designations underscore that without active intervention, the remaining foothill populations face a very real risk of local extinction.