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 Mexican annual with divided leaves, and creamy-yellow Marguerite-like flowers, 2-3 in. across, with a blackish centre. There are several forms of it. Seeds may be sown in spring to produce plants for bedding out in May and June.