March 2008 Newsletter
Aloe Ferox Mill.
Common Names: Bitter Aloe; Red Aloe (English); Bitteraalwyn; Bergaalwyn (Afrikaans); iNhlaba (Zulu); iKhala (Xhosa)
Family: ALOAC
Name Derivations:
Aloe - derived from the Greek word for the dried juice of aloe leaves
Ferox - "fierce" or "war-like" referring to the spiny edged leaves
The bitter aloe is most famous for its medicinal qualities. In parts of South Africa, the bitter yellow juice found just below the skin has been harvested as a renewable resource for two hundred years. The have black, resinous product is known as Cape aloes or aloe lump and is used mainly for its laxative properties but is also taken for arthritis."Schwedenbitters" which is found in many pharmacies contains bitter aloe. The gel-like flesh from the inside of the leaves is used in cosmetic products and is reported to have wound healing properties. Interestingly Aloe ferox, along with Aloe broomii, is depicted in a rock painting which was painted over 250 years ago.
It is a tall single stemmed aloe which has a wide distribution, ranging over 1000km from the south western Cape through to southern Kwazulu-Natal. It is also found in the south eastern corner of the Free State and southern Lesotho.
It occurs in a broad range of habitats as a result of the wide distribution range. It is common on rocky hill slopes, often in very large numbers where it creates a stunning winter display. In the south western Cape it grows in grassy fynbos and in the southern and Eastern Cape it may also be found on the edges of the karoo. Aloe ferox grows both in the open and in bushy areas. The plants may also differ physically from area to area due to local conditions - a south east Free State winter is quite different to that of the Eastern Cape coast!
An attractive form of Aloe ferox is found in Kwazulu-Natal, particularly between the midlands and the coast in the Umkomaas and Umlaas river catchment areas. This used to be known as A. candelabrum and has subsequently been included in the species.
The bitter aloe will reach 2-3 metres in height with the leaves arranged in a rosette. The old leaves remain after they have dried, forming a "petticoat" on the stem. The leaves are a dull green, sometimes with a slightly blue look to them. They may also have a reddish tinge. The "A. candelabrum form" has an elegant shape with the leaf tips curving slightly downwards. The spines along the leaf edge are reddish in colour. Spines may also be present on upper and lower surfaces of the leaves as well. Young plants tend to be very spiny.
The flowers are carried in a large candelabra-like flower-head. There are usually between five and eight branches, each carrying a spike-like head of many flowers. Flower colour varies from yellowy-orange to bright red. "A. candelabrum" has six to twelve branches and the flowers have their inner petals tipped with white.
