Among these are Ladies Bedstraw, whortleberry, yellow iris, bracken, bramble, meadow sweet, alder, heather and many others.
"Vegetable Dyes" by Ethel M. Mairet
Lady's bedstraw seems to have been so called from the yellow colour of one or more kinds of Galium.
"Springtime and Other Essays" by Francis Darwin
The leaves of the Yellow Bedstraw are very tiny.
"Flowers Shown to the Children" by C. E. Smith