Two lovely names for a dandelion-daisy-ish yellow flower with spokes poking out like a leafy wheel.
‘The shock-headed flowers of the yellow goat’s beard, or John-go-to-bed-at-noon …’
Source: Henry Williamson, Tarka the Otter: His joyful water-life and death in the two rivers, illus. C.F. Tunnicliffe (Harmondsworth: Puffin Books, 1976 (1927)), p. 43