Elsewhere he explains how darnel ???is a vitious graine that cumbereth or annoyeth corne,??? and yet, ???with pigions dung, oyle and linseed, boiled and layd plaisterwise upon wens doth dissolve and heale them.??? Bracken in the wrong place disrupts upland and hill grassland, but in the past was an important resource in its own right, for fuel and soap production.