This clover with yellow flowers is known as oxalis or yellow wood sorrel. Oxalis is a type of weed that can be found in many parts of the world, including North America, Europe, and Asia. It is a perennial plant that grows low to the ground, with clover-like leaves and small, yellow flowers that bloom in the spring and summer.

Yellow Wood Sorrel (Oxalis stricta) is a common lawn weed. A summer annual that looks like clover, has yellow flowers, and spreads by seed.

Yellow woodsorrel, known by several other names such as common yellow oxalis, sleeping beauty, and shamrock, is a weed resembling clover. Its heart-shaped green leaves turn a deep burgundy color in the summer, producing bright yellow flowers. This persistent lawn weed is a formidable foe for lawn enthusiasts.