Any of various Australian shrubs or trees of the genera Callistemon and Melaleuca, having densely flowered, cylindrical spikes with numerous, long, protruding stamens that suggest a brush used to clean bottles.

• 红千层属植物红千层属和白千层属各种澳大利亚灌木或树木，具有稠密的花状圆柱形尖刺，上带大量长而突出的雄蕊，令人想起清洁瓶子的刷子