cirsium flodmanii(n = noun.plant) woolly thistle - thistle of western North America having white woolly leaves;
is a kind of plume thistle, plumed thistle
has particulars: cirsium eriophorum, european woolly thistle

cirsium, cirsium arvense, cirsium discolor, cirsium eriophorum, cirsium helenioides, cirsium heterophylum, cirsium lanceolatum, cirsium rivulare, cirsium vulgare, genus cirsium