This section is from the book "Commercial Gardening Vol4", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
A quick - growing shrub, 6-10 ft. high, with graceful pinnate leaves and racemes of yellow flowers from June to August, followed by large bladder-like pods tinted with red when ripe. There is a dwarf variety called pygmaza, and a few other species not so well known. Easily raised from seeds, and grows in any poor soil. Suitable for railway embankments and such places.