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Content tagged with "summer wildflower"

Photo of brown-eyed Susan flowers.

Brown-Eyed Susan (Flowers)

The flowerheads of brown-eyed Susan are numerous and are much smaller than other Rudbeckia species, reaching only about 1 inch across.

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Photo of buffalo bur flower and leaves.

Buffalo Bur (Flower and Leaves)

A spiny annual with bright yellow flowers and dandelion-like leaves, buffalo bur is an introduced member of the nightshade family.

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Photo of buffalo bur, spiny fruits and leaf.

Buffalo Bur (Fruits and Leaf)

The burlike prickles on the fruits of buffalo bur cause them to become attached to animal fur. This enables them to be dispersed away from the parent plant.

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Photo of buffalo bur flower and leaves.

Buffalo Bur (Kansas Thistle)

Solanum rostratum
A spiny annual with bright yellow flowers and dandelion-like leaves, buffalo bur is an introduced member of the nightshade family.

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Photo of buffalo bur plant showing flowers and fruits.

Buffalo Bur (Plant with Flowers and Fruits)

Buffalo bur is scattered nearly statewide. It occurs on banks of streams and rivers, disturbed portions of upland prairies, pastures, farmyards, roadsides, and other open, disturbed places.

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Photo of buffalo bur stems showing prickly spines.

Buffalo Bur (Stems)

The feet of livestock (and people!) can be injured by the spiny prickles of buffalo bur. Grazing animals’ mouths can be damaged by the spines, too.

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Photo of bull thistle, a spiny thistle with a pink flowerhead

Bull Thistle

Bull thistle is a weedy introduction from Europe, found statewide. To tell it from our other thistles, note its stems with spiny-margined wings, and its leaves with the upper surface strongly roughened with stiff, spiny bristles.

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Photo of a bull thistle flowerhead.

Bull Thistle

Cirsium vulgare
Bull thistle is a weedy introduction from Europe, found statewide. To tell it from our other thistles, note its stems with spiny-margined wings, and its leaves with the upper surface strongly roughened with stiff, spiny bristles.

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Photo of a bull thistle flowerhead.

Bull Thistle (Flowerhead)

The flowerheads of bull thistle are reddish purple to purple, with a prominent involucre (the flowerhead base, covered by leaflike bracts), which is covered with a fine, cobweb-like silk. Spiny bracts grow right up to the flowerheads.

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Photo of bull thistle showing stems with spiny wings.

Bull Thistle (Stem)

Bull thistle has stems with spiny-margined wings. This trait, combined with the pink flowerheads, is a quick way to identify this common, weedy species.

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