This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
A pretty North American Poppywort, 3-6 in. high, with lobed leaves, and beautiful white flowers in April and May. Easily grown in moist sandy peat, or leaf mould and loam, and propagated by division or seeds.