Cirsium
Plant
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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 known as plume thistles. These differ from other thistle genera in having feathered hairs to... Wikipedia
Lower classifications
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There are 58 species of Cirsium thistles native to North America. This thistle is 80 to 200 centimeters (about, 31 to 79 inches) tall. The stem is upright and ...
2. Heads large (involucre ca. 3.5-6.5 cm broad), mostly solitary on short branches; phyllaries with a strong spine tip ca. 2-6 mm long; upper surface of leaves ...
Cirsium arvense is a perennial species of flowering plant in the family Asteraceae, native throughout Europe and western Asia, northern Africa and widely ...
Photos and information about Minnesota flora - Tall Thistle: purple to pink flower heads 1 to 2 inches across and bracts with soft needle-like spines.
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Pasture Thistle, also called Field Thistle, is a biennial or short-lived perennial. It has a central taproot so it does not spread by rhizomes like Canada ...
The Pitcher's thistle is a native thistle that grows on the open sand dunes and low open beach ridges along the shorelines of Lakes Michigan, Superior, and ...
Habitat and impact. Bull thistle prefers sunny, open areas and can tolerate a wide range of conditions, from moist to dry soils, and is typically found in ...
One of the more common of our native plants is wavyleaf thistle (Cirsium undulatum). Primarily a western species, it grows from the arid plateaus of the Pacific ...
Flower: Flower shape: indistinct Cluster type: panicle. [photo of flowers] Flower head is 1½ to 2 inches across, pink to lavender, or occasionally white.