I haven't been able to identify the species! It could possibly be P. erecta, P. hirta, P. recta which has wrong foliageor P. reptans. I have excluded P. anserina wrong foliage, P. calabra and P. caulescens which has white flowers All these sp. grow in the Region where I reside. I am inclined to choose sp. repans. Hoping that a member can help.