Callistemon viridiflorus

About

Melaleuca virens, commonly known as lime bottlebrush, is a plant in the myrtle family, Myrtaceae and is endemic to Tasmania in Australia. It is one of only two melaleucas endemic to Tasmania, the other being Melaleuca pustulata although another six also occur there. A small to medium shrub growing mostly in subalpine areas, it has hard, leathery, sharply pointed leaves and spikes of yellow or greenish flowers in early summer,

Summary from Wikipedia