Need a break? Play the USA TODAY Daily Crossword Puzzle. Our Mystery Plant (Tall thistle, Cirsium altissimum) is a thistle, and I was able to enter a patch of this stuff on a recent field trip in ...

Our Mystery Plant is a thistle, and I was able to enter a patch ... and also in the Midwest. The tall stems are smoothish, and the leaves are equipped with spines. These leaves are dark green ...

Plants are useful in a variety of ways ... There are at least nine different species of thistle in Florida which include tall thistle, Lecontes thistle, swamp thistle, Nutalls thistle, purple ...

Our Mystery Plant (Tall thistle, Cirsium altissimum) is a thistle, and I was able to enter a patch of this stuff on a recent field trip in the upstate of South Carolina. Spiny stuff! It is ...