Neltje Blanchan, Wild Flowers Worth Knowing
“ This humble, rusty green plant, weakly lopping over the surrounding grass, so that often only its insignificant purple, clover-like flower-heads are visible, is another of those immigrants from the old countries which, having proved fittest in the fiercer struggle for existence there, has soon after its introduction here exceeded most of our more favored native flowers in numbers. Everywhere we find the heal-all, sometimes dusty and stunted by the roadside, sometimes truly beautiful in its fresh purple, violet, and white when perfectly developed under happy conditions. ”
