I dont know much about clover types but some of the orange groves I have hunted here in Fl very often have clover growing wild between the rows, or in the "middles" as we say... The root systems produce small white bulbs I believe are called root nodules. I couldnt count the gobblers I have killed with a craw full of these. Now they eat the slop out of the leaves and blooms too but they love to dig up the little bulbs. Now whether the variety you planted shares this characteristic I have no idea.