> as lemmas

1832 H. Howard Improved Syst. Bot. Med. II. 360 Poolroot, White Snake-Root... The root is small, fibrous, of a dirty white, from two to four inches long... The root of this plant is the part used in medicine. It appears to be a warm stimulating tonic.

1869 W. Cook Physio-Medical Dispensatory 418 Eupatorium Ageratoides. White snakeroot, pool root.

1941 E.L. Moseley Milk Sickness caused by White Snakeroot xiv. 146 The plant that causes Milk Sickness has many names—White Snakeroot, White Sanicle, Indian Sanicle, Richweed, Deerwort, Boneset, Whitetop, Squawweed, Steria, Poolwort, Poolroot.