I must say Oxalis Corniculata had been the hardest challenge for me so far after my Passiflora Studs design.
Introduction of Oxalis Corniculata
(Extracted from Wikipedia)
Creeping Woodsorrel (Oxalis corniculata), also called Procumbent Yellow-sorrel or Sleeping Beauty, resembles the Common Yellow Woodsorrel (O. stricta). It is a somewhat delicate-appearing, low-growing, herbaceous plant in the family Oxalidaceae. It has a narrow, creeping stem that readily roots at the nodes. The trifoliate leaves are subdivided into three rounded leaflets and resemble a clover in shape. Some varieties have green leaves, while others, like Oxalis corniculata var. atropurpurea, have purple. The leaves have inconspicuous stipules at the base of each petioles.
Hope you like it, and Happy Sunday!