In Labiate plants, as the dead-nettle (Lamium), the flowers are produced in the axil of each of the foliage leaves of the plant, and they appear as if arranged in a simple whorl of flowers.
So also in Labiatae, such as dead-nettle (Lamium), the different whorls of inflorescence are developed centripetally, while the florets of the verticillaster are centrifugal.
Dead Nettle (Lamium) - Perennial herbs of which there are a few plants occasionally worth a place in poor dry soils, where little else will grow-such as are found on dry banks or beneath trees.