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.
An interesting Japanese plant, 1-3 ft. high, with hairy stems, lance-shaped leaves, and whitish flowers spotted with violet and purple. Other kinds are macropoda and pilosa, very similar. They flower in autumn, and should be grown in sheltered places in sandy loam and peat or leaf soil. Increased by division and seeds.