Eucalyptus longicornis, commonly known asred morrel,morryl,pootorpu, is a species of large tree that isendemicto the south-west of Western Australia. It has rough, fibrous, fissured bark on the trunk, smooth greyish bark above, flower buds in groups of seven or more, white flowers and shortened spherical fruit.
Eucalyptus longicornisis a tree that typically that grows to a height of 2 to 24 metres (7 to 79 ft) and can reach as high as 30 m (98 ft). It has rough, grey brown, fibrous, often fissured bark on the trunk, smooth white to greyish bark above. Young plants andcoppiceregrowth have stems that areglaucous, more or less square in cross-section, andsessile, lance-shaped to egg-shaped leaves that are 20–85 mm (0.79–3.35 in) long and 9–26 mm (0.35–1.02 in) wide. Adult leaves are arranged alternately, thick, the same shade of glossy green on both sides, linear to narrow lance-shaped, 60–130 mm (2.4–5.1 in) long and 6–13 mm (0.24–0.51 in) wide, tapering to apetiole10–15 mm (0.39–0.59 in) long. The flower buds are arranged in groups of between seven and thirteen in leaf axils on an unbranchedpeduncle6–13 mm (0.24–0.51 in) long, the individual buds onpedicels4–9 mm (0.16–0.35 in) long. Mature buds are oval, 9–15 mm (0.35–0.59 in) long and 3–6 mm (0.12–0.24 in) wide with a pointedoperculum7–10 mm (0.28–0.39 in) long. Flowering occurs between December and February and the flowers are white. The fruit is a woody shortened sphericalcapsule6–8 mm (0.24–0.31 in) long and wide with the valves protruding well above the rim of the fruit. The capsules contain over 200 seeds per gram and persist on the tree until at least the following year, often longer.