Thymus pulegioides, common names broad-leaved thyme or lemon thyme, is a species of flowering plant in the family Lamiaceae, native to Europe. It is a small spreading subshrub with strongly aromatic leaves, and lilac pink flowers in early summer.
Broad-leaved thyme is a creeping dwarf evergreen shrub with woody stems and a taproot. It grows to 5–25 cm (2–10 in) tall by 25 cm (10 in) wide. The reddish stems are squarish in cross-section and have hairs on the edges. The leaves are in opposite pairs with short stalks, and the linear ovate blades have tapering bases and untoothed margins. The plant flowers in July and August. The usually pink or mauve flowers form rounded umbels and each has a tube-like calyx and an irregular straight-tubed, hairy corolla. The upper petal is notched and the lower one is larger than the two lateral petals and has three flattened lobes which form a lip. Each flower has four projecting stamens and two fused carpels. The fruit is a dry, four-chambered schizocarp.