Sect. Serpylla C. K. Schneider.

Shrubs procumbent, creeping, or cushion-shaped. Stems rooting. Leaves small, elliptic to lanceolate, margin entire or dentate. Catkins terminal or lateral, capitate, few flowered. Male flower: adaxial and abaxial glands present; stamens 2, distinct. Female flower: only adaxial gland present, rarely with adaxial and abaxial glands; ovary glabrous or pilose, sessile or stipitate.