Tag Archives: Thistle

Yellow Thistle – Cirsium horridulum – Added to USWildflowers’ Database

Yellow Thistle, a native species, has been added to the USWildflowers database (6/02/2014.)  Scientific name is Cirsium horridulum.  It is also known as Common Yellow Thistle, Spiny Thistle, Bigspine Thistle, Southern Yellow Thistle, and Horrible Thistle . Photo below was taken in Catoosa County, GA on May 12, 2014. Go to the Yellow Thistle detail page for more photos and information.

Yellow Thistle, Common Yellow Thistle, Spiny Thistle, Bigspine Thistle, Southern Yellow Thistle, Horrible Thistle - Cirsium horridulum

Yellow Thistle – Cirsium horridulum

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Hooker’s Thistle – Cirsium hookerianum – Added to USWildflowers’ Database

Hooker’s Thistle, a native species, has been added to the USWildflowers database (11/09/2012.) Scientific name is Cirsium hookerianum.  It  is also known by the common name White Thistle.  Photo below was taken in the Boise Foothills, Ada County, ID on June 21, 2011.   Go to the Hooker’s Thistle detail page for more photos and information.

Hooker’s Thistle, White Thistle - Cirsium hookerianum

Hooker’s Thistle, White Thistle – Cirsium hookerianum

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