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...

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

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

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

Cirsium lanceolatum may refer to: Cirsium lanceolatum (L.) Scop., a synonym of Cirsium vulgare subsp. vulgare, also known as spear thistle or common thistle...

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

Cirsium oleraceum, the cabbage thistle or Siberian thistle, is a species of thistle in the genus Cirsium within the family Asteraceae, native to central...

Cirsium hookerianum, Hooker's thistle or white thistle, is a North American species of thistle native to western Canada and the northwestern United States...

Cirsium × przybylzkii (Cirsium greimleri × oleraceum) is a hybrid between Cirsium greimleri and Cirsium oleraceum. It is known from 16 herbarium specimens...

Cirsium occidentale, with the common name cobweb thistle or cobwebby thistle, is a North American species of thistle in the family Asteraceae. Cirsium...

Cirsium × stiriacum (Cirsium greimleri × rivulare) is a hybrid between C. greimleri and C. rivulare. It is a rare hybrid, known from only 4 herbarium specimens...

Cirsium carolinianum is a North American species of plants in the tribe Cardueae within the family Asteraceae. Common name is Carolina thistle or purple...

Cirsium horridulum, called bristly thistle, purple thistle, or yellow thistle is a North American species of plants in the tribe Cardueae within the family...

Cirsium muticum, also known as swamp thistle, marsh thistle, dunce-nettle, or horsetops, is a North American species of plants in the family Asteraceae...

Cirsium greimleri, Greimler-Kratzdistel lit. 'Greimler's thistle', is a perennial species of flowering plant in to the family Asteraceae. It was described...

Cirsium cymosum is a North American species of thistle known by the common name peregrine thistle. It is native to the western United States, where it...

Cirsium neomexicanum is a North American species of thistle known by the common names New Mexico thistle, powderpuff thistle, lavender thistle, foss thistle...

Cirsium eriophorum, the woolly thistle, is a herbaceous biennial species of flowering plant in the genus Cirsium of the family Asteraceae. It is widespread...

Cirsium foliosum , also called leafy thistle, foliose thistle, elk thistle, or Evert's thistle, is a North American plant species in the tribe Cardueae...

Cirsium × reichardtii (Cirsium greimleri × palustre) is a hybrid between C. greimleri and C. palustre. It is known from 38 herbarium specimens as of 2020...

Cirsium acaule or acaulon has the English name dwarf thistle or stemless thistle. It is widespread across much of Europe. It is often found on short,...

Arctium is a genus of biennial plants commonly known as burdock, family Asteraceae. Native to Europe and Asia, several species have been widely introduced...

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

genus Cirsium. Cirsium acantholepis Petr. Cirsium acrolepis (Petr.) G.B.Ownbey Cirsium altissimum (L.) Spreng. Cirsium anartiolepis Petr. Cirsium andersonii...

Cirsium canescens, commonly known as prairie thistle, is a species of flowering plant in the sunflower family, Asteraceae. It is a thistle native to the...

Cirsium wrightii, or Wright's marsh thistle, is an endangered species of North American plants in the family Asteraceae. It is a monocarpic perennial...

thistle – Cirsium arvense Canada thistle – Cirsium arvense Corn thistle – Cirsium arvense Corn sow thistle – Sonchus arvensis Creeping thistle – Cirsium arvense...