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...

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

Cirsium × sudae (Cirsium carniolicum × greimleri) is a hybrid between C. carniolicum and C. greimleri. Possibly endemic to the Karawanks, the only range...

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

Cirsium creticum is a species of plant native around the Mediterranean and Iran. The species has the following subspecies. Cirsium creticum subsp. creticum...

Cirsium eatonii, commonly known as Eaton's thistle or mountaintop thistle, is a North American species of flowering plants in the family Asteraceae. The...

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...

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

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

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

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

The Juncus subnodulosus–Cirsium palustre fen-meadow is a plant association characteristically found on damp ground in portions of western Europe. This...

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 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 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,...

Cirsium ochrocentrum is a species of thistle known by the common name yellowspine thistle. It is native to the Great Plains of the Central United States...

Cirsium arizonicum, the Arizona thistle, is a North American species of thistle in the family Asteraceae, native to the southwestern United States and...

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

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 spinosissimum, common name spiniest thistle, is a European species of thistle which grows in dry rocky areas. It is found in France, Italy, Germany...

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 scariosum is a species of thistle known by the common names meadow thistle, elk thistle and dwarf thistle. It is native to much of western North...

Vaill. Carduus acarna L. Carlina acarna (L.) M.Bieb. Cirsium pisidium Wettst. Cnicus acarna (L.) L. Carthamus canescens Lam. Cirsium acarna (L.) Moench...