NATIONAL WILDFLOWER WEEK Lady Bird Johnson said wildflowers “give us a sense of where we are in this great land of ours.”  Right she was!  From bluebonnets (Lupinus texensis) blanketing Hill Country roadsides and purple coneflowers (Echinacea purpurea) dotting Wisconsin prairies to California poppies (Eschscholzia californica) making good on their state’s nickname, wildflowers are admired nationwide — and they’re celebrated ...