dont sweat it.. ive heard many stories and experienced it myself.. mutant clones and the such.. some strains just do that it seems.. they dont clone as well.. or they have mutant babies.. in fact on this grow im about to harvest i had a crazy mutant clone.. it ended up being one of my tallest girls and looks like itll be one of the heaviest yielders... almost a week from harvest... check my journal if you want.. got tons of pics if you feel like looking... links below in my sig.. oh.. and the pistils are prolly preflowers.. as long as you are giving them the right light cycle foe veg growth they wont flower... like i said dont worry... they will grow to be beautiful girls!
good luck
sampson