Aloidendron barberae (Dyer) Klopper & Gideon F.Sm.

The eastern tree aloe is the tallest and largest of the South African tree aloes, forming tall, much-branched trees of up to 18 m. The bark is greyish and rough to the touch. Dense inflorescences with rose-pink flowers, which are pollinated by short-beaked weavers and white-eyes, are often hidden among the bright green leaves. It grows in dense, tall bush and low forest, on rocky slopes of wooded valleys. The eastern tree aloe occurs in scattered localities in a broad coastal zone from East London in the Eastern Cape, through KwaZulu-Natal, and Mpumalanga, South Africa, also in Swaziland and along the southern Mozambique coast, as far north as Inhambane, with a known disjunct collection further north in the Cheringoma District of eastcentral Mozambique.

Aloidendron pillansii (L.Guthrie) Klopper & Gideon F.Sm.

The giant quiver tree has a very distinctive growth form, with a huge trunk and a few, large rosettes on the smooth, forked branches. The broad leaves are sliver-grey with white margins and teeth. Inflorescences with yellow, slightly swollen flowers are produced laterally from axils of the lowest leaves. The giant quiver tree grows on stony hillsides that are almost devoid of soil in Succulent Karoo vegetation, at low altitudes. It is only known from the Richtersveld, South Africa, and adjacent areas of Namibia.

Aloidendron tongaensis (Van Jaarsv.) Klopper & Gideon F.Sm.

The Tonga tree aloe forms branched trees of up to 8 m, with terminal rosettes of recurved, dull green leaves. The curved, yellowish orange flowers are drooping (pendulous), borne in short, dense, erect, few-branched inflorescences and are pollinated by sunbirds. It only grows in sand forest, in warm, humid, tropical/subtropical conditions, on sandy soil. The Tonga tree aloe is restricted to the sand forests at Kosi Bay in northern KwaZulu-Natal, South Africa and adjacent territory of southern Mozambique.