Aloe africana

Aloe africanaAloe africana is a solitary, often unbranched, small, tree like Aloe, usually up to 6 feet (1. 8 m) but sometimes taller with rosettes densely crowded with gracefully arching 2 foot (60 cm) long lance shaped thick grayish blue green leaves that have prominent sharp red teeth along the margins and in a row running along the middle of the lower surface with older leaves skirting the trunk. Flowering on this species can happen at other times but most

Aloe africana is a solitary, often unbranched, small, tree-like Aloe, usually up to 6 feet (1.8 m) but sometimes taller with rosettes densely crowded with gracefully arching 2 foot (60 cm) long lance-shaped thick grayish blue-green leaves that have prominent sharp red teeth along the margins and in a row running along the middle of the lower surface with older leaves skirting the trunk. Flowering on this species can happen at other times but most often in mid-winter to early spring (January-March) with an unbranched to fewbranched up to 3 foot (90 cm) inflorescence of erect long-tapering terminal spikes of flowers that are orange in bud and turn yellow just prior to opening from the bottom of the spike upwards. The individual flowers are held in a downward inclination but uniquely turn upwards towards the tips, making identification of this species quite easy.

Source: worldofsucculents

Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz