Linnaeus didn't leave a clue. There is no authority on the matter. One person's wildflower is another's weed. It all comes down to perspective. A weed is simply an unwanted plant, especially one that grows in a cultivated garden.
Weeds require pulling, poison and curses.
They take up anywhere, in the cracks on a patio or in the middle of the manicured green of a lawn. A weed comes in only one form 'weed'. The plebeian name carries no specificity as though they all belong together, a wastebasket term for the undesirable. Inc. All rights reserved.