Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Acacia coriacea subsp. sericophylla is a or growing 2 m to 10 m high, which is native to . It flowers all year. Its flowers are light yellow to cream-colored. On 1 January 1901, the six colonies , forming the Commonwealth of Australia. Since Federation, Australia has maintained a stable political system which functions as a and . The federation comprises . The population of 22.7 million is heavily concentrated in the and is highly .