Aloe marlothii subsp. marlothii A.Berger

Trees 2-4(-10) m tall; stems simple. Leaves 40-50, arcuate-incurved to spreading or slightly recurved with age, 750-1500 x 75-250 mm, channelled to D-shaped in section, glaucous, usually with irregular prickles on both surfaces, these normally fewer on upper surface. Inflorescence of spreading to rarely erect, usually secund, rarely cylindric racemes, with up to 30 branches; bracts ovate-acute, 4-9 x 2-5 mm, 3-5-nerved. Flowers yellow to red in bud, yellow to orange at flowering, cylindric to ventricose, 22-35 mm long; outer segments connate for one third to half their length, inner segments adnate to outer in basal third; pedicles 3-5 mm long. Anthers exserted 8-20 mm. Ovary 5.0-9.0 x 1.5-5.0 mm, green; style exserted 6-20 mm. Fruit 19-21 x 10-12 mm, grey.