Shrub of sandy woodlands and stream banks of western United States having hoary pinnate flowers and dull-colored racemose flowers,thought to indicate the presence of lead ore.

• 美国西部长在沙质林地或溪岸上的一种灌木，羽状叶、生满灰白色柔毛，总状花序、花颜色深暗，有些人认为这种植物指示铅矿的存在。