This section is from the book "The Wild Garden", by W. Robinson. Also available from Amazon: William Robinson: The Wild Gardener.
Plants with graceful leaves and gay flowers suited for association with dwarf subjects on open banks, except D. spectabilis, which in deep peat or other rich soil will grow a yard high. The simple-looking little Fumaria bulbosa is one of the dwarf subjects which thrive very well under the branches of specimen deciduous trees, and Corydalis lutea thrives in every position from the top of an old castle to the bottom of a well shaft, I saw Dielytra eximia naturalised in Buckhurst Park, in a shrubbery, the position shady. Its effect was most charming, the plumy tufts being dotted all over with flowers. Had I before wished to naturalise this, I should have put it on open slopes, or among dwarf plants, but it thrives and spreads about with the greatest freedom in shady spots. The blossoms, instead of being of the usual crimson hue, were of a peculiar delicate pale rose, no doubt owing to the shade ; and, as they gracefully drooped over the elegantly-cut leaves, they looked like snowdrops of a faint rosy hue.
 
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