Cirsium is a genus of perennial and biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles. They are more precisely...

Cirsium vulgare, the spear thistle, bull thistle, or common thistle, is a species of the Asteraceae genus Cirsium, native throughout most of Europe (north...

Cirsium arvense is a perennial species of flowering plant in the family Asteraceae, native throughout Europe and western Asia, northern Africa and widely...

spininess varies considerably by species. For example, Cirsium heterophyllum has very soft spines while Cirsium spinosissimum is the opposite. Typically, species...

Cirsium japonicum, commonly known as Japanese thistle, plumed thistle, or sea thistle, is a species of flowering plant in the sunflower family, Asteraceae...

current genus Cirsium. Cirsium altissimum (L.) Spreng. Cirsium anartiolepis Petr. Cirsium andersonii Petr. Cirsium andrewsii Jeps. Cirsium arizonicum (A...

Cirsium rivulare is a species of flowering plant in the family Asteraceae, native to eastern and western Europe, adventive in Britain, and naturalised...

Cirsium discolor, the field thistle, is a North American species of plants in the tribe Cardueae within the family Asteraceae. It is native to thirty-three...

Cirsium palustre, the marsh thistle or European swamp thistle, is a herbaceous biennial (or often perennial) flowering plant in the family Asteraceae...

Cirsium heterophyllum, the melancholy thistle, is an erect spineless herbaceous perennial flowering plant in the family Asteraceae. It is native to Europe...