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Pycnosorus is a genus of six species of plants in the family Asteraceae. Commonly known as billy buttons or drumsticks, they are annual or perennial herbs or small shrubs with a cylindrical to spherical head of up to 200 daisy-like "flowers". Each "flower" is a pseudanthium consisting of between three and eight florets surrounded by bracts. The petals are joined to form a small tube and the florets with their surrounding bracts are yellow or golden-yellow.
All six species of Pycnosorus are endemic to Australia and there are species in all states except Tasmania. Most species grow in heavy, often rocky soils.
Text excerpted from the Wikipedia article Pycnosorus by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
