Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Stiff Sunflower (Helianthus pauciflorus, syn. Harpalium rigidum Cass.) is an ornamental plant in the Asteraceae family. The Asteraceae or Compositae, also referred to as the aster, daisy, or sunflower family, is the largest family of vascular plants. The family has more than 22,750 currently accepted species, spread across 1620 genera, and 12 subfamilies.

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