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Scotch Thistle

Onopordum acanthium

Photo by BlueAppaloosa
Published on Project Noah
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39.6049, -105.141

Field Notes

Description:

A large purple thistle. Can be distinguished from the similar Bull Thistle because the bract (green part at the base of the flower) is short and squat instead of tall and slender. This plant can get huge, up around 6 feed. Considered a noxious weed here.

Habitat:

open field

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Spotted for Missions

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Flowers of North America
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Flowers in the Rocky Mountains - UT, CO, WY
Photographed
PublishedOctober 24, 2014

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