Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Helianthus ciliaris is a species of sunflower known by the common names Texas blueweed and yerba parda. It is native to much of the south-central United States and northern Mexico, but it can be found elsewhere in North America where it is an introduced species and often a noxious weed. It is weedy even in much of its native range, growing readily in disturbed areas, on cultivated land, and along the roadside. It grows well in moist areas such as drainage ditches.

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