Banksia serrata, commonly known as old man banksia, saw banksia, saw-tooth banksia and red honeysuckle, is a species of woody shrub or tree of the genus Banksia in the family Proteaceae. Native to the east coast of Australia, it is found from Queensland through to Victoria with outlying populations on Tasmania and Flinders Island. Commonly growing as a gnarled tree up to 15 m (50 ft) in height, it can be much smaller in more exposed areas. This Banksia species has wrinkled grey bark and shiny dark green serrated leaves, with large, yellow or greyish-yellow flower spikes, known as inflorescences, appearing over the summer. The flower spikes turn grey as they age and large grey follicles appear.