== ''Aloe vaombe'' ==
''[[Aloe vaombe]]'' Decorse & Poiss. (orthographic variant ‘ ''vahombe’vahombe''’) is a small tree with an unbranched trunk up to 5 m tall. Skin lesions are treated with leaf juice, and the leaves are boiled in water and drunk to cure yellow fever. Extracts of ''Aloe vaombe'' leaves have shown anti-infectious activity when mice were injected with them but no bactericidal activity was detected. In another test with mice, administration of a gel extract called ‘Alva’ reduced the growth rate of fibrosarcoma and melanoma tumours.
== ''Aloe macroclada'' ==