Xanthosia rotundifolia
| Southern cross | |
|---|---|
| Xanthosia rotundifolia near Torndirrup | |
| Scientific classification | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Clade: | Asterids | 
| Order: | Apiales | 
| Family: | Apiaceae | 
| Genus: | Xanthosia | 
| Species: | X. rotundifolia  | 
| Binomial name | |
| Xanthosia rotundifolia | |
| Synonyms | |
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Xanthosia rotundifolia, commonly known as southern cross, is a species of flowering plant in the family Apiaceae and is endemic to the south-west of Western Australia. It is an erect, perennial herb with serrated or toothed leaves and white to creamy-yellow flowers.