There are hundreds of microspecies of dandelion, including ones with freckled leaves, red leaves, and even reddish outer florets. They also have many doppelgängers later in the season, including the star-like goats-beard, tragopogon pratensis, and perennial sow-thistle, sonchus arvensis, which stands several feet tall. They all have distinctive characteristics, but one thing that unites these flowers is that seeing them should make you grin. Coltsfoot marks the start of months of smiling.