Hardy perennial geraniums are easy to divide. First dig up the plant. Then, using your hands, tease the clump apart to separate out a portion that includes leaves and roots. A handful about 3 across is usually a good size. Replant at about the same depth.
A stigma is a part of a flower that gets pollen from pollinators such as bees. The stigma is part of the female reproductive part of a flower, the pistil. The sitigma is on top of the style.
coma - (botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds) phytology, botany - the branch of biology that studies plants. tuft, tussock - a bunch of hair or feathers or growing grass.