Cirsium vulgare (Savi) Ten.

Cirsium vulgare (Savi) Ten.. Cirsium vulgare, commonly known as spear thistle, bull thistle, or common thistle, is a species of the Asteraceae genus Cirsium, native throughout most of Europe, Western Asia, and northwestern Africa. It is also naturalised in North America, Africa, and Australia and is an invasive weed in several regions. It is the national flower of Scotland.