Prostanthera phylicifolia, commonly known as Spiked Mint-bush, is a species of plant in the Lamiaceae family. The species was first formally described by Victorian Government Botanist Ferdinand von Mueller in 1858 in Fragmenta Phytographiae Australiae.
Plants have a compact or spreading habit, growing to between 0.5 and 2 metres high. The leaves have a rounded apex and cuneate or obtuse base and are 5 to 15 mm long and 1.5 to 4 mm wide, with the edges turned back. Flowers are produced in the leaf axils from October to January (mid spring to mid summer) in the species native range. These are white or pale lilac and have yellow spots on the lower lobe and purple spots inside the throat.
- "Prostanthera phylicifolia". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2010-11-08.
- "Prostanthera phylicifolia". PlantNET - New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia. Retrieved 2009-12-08.
- "Prostanthera 'Poorinda Snow Queen'". RHS Horticultural Databse. Retrieved 10 January 2013.
- Greig, D. (1987). The Australian Gardener's Wildflower Catalogue. Australia: Angus & Robertson. ISBN 0207154600.
- F.Muell., Fragm. 1: 19 (1858).