Tea-tree

Latin Name: 
Melaleuca alternifolia
Other names: 
Narrow-Leaved Paperbark
Narrow-Leaved Tea-Tree
Narrow-Leaved Ti-Tree

It has many external uses as an essential oil

Tea tree oil has been recognized as a potent antiseptic in Australia anecdotally for many years, but has been scientifically investigated only relatively recently. Recent studies support a role for the topical application of tea tree oil in skin care and for the treatment of various diseases and conditions. Tea tree oil appears to be effective against bacteria, viruses, fungal infections, mites such as scabies, and lice such as head lice.
Tea tree oil has activity against the bacteria staphylococcus aureus including MRSA.