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No more popular or more useful tree is grown than the Common Laburnum, for it is serviceable alike for large and small gardens, will grow almost anywhere, north or south, seaside or inland, town or country, gives very little trouble, and is easily increased from seeds, which are produced freely. In addition to Laburnum vulgare, the Common Laburnum, there are others well worth growing, and a selection is given.

Laburnum Adami - This is a particularly interesting tree, and is popularly called the Purple Laburnum. It originated in 1825 as a graft hybrid after Cytisus purpureus had been grafted on a stock of Laburnum Alpinum by Mr. D. Adam, a nurseryman at Vitry, near Paris. The peculiarity of the plant lies in the fact that occasionally ordinary yellow Laburnum racemes, purple flowered racemes similar in size to the yellow ones, and branches identical in every respect, both as regards leaves and flowers, to Cytisus purpureus, appear on the same tree at the same time, while the following year the same thing may occur again, or one or two forms only may appear, the three appearing again after a lapse of a year or two.

Laburnum Alpinum, the Scotch Laburnum, is a native of Europe. It grows 20 to 25 feet high, bears longer racemes than Laburnum vulgare, and blooms a little later.

Laburnum Parksii is a hybrid with very long racemes of flowers.

Laburnum vulgare, the Common Laburnum, is a very well known European tree, growing 20 to 25 feet high; it has been cultivated for upwards of 300 years. It blossoms in April and May, and has many varieties.

Laburnum Watereri is a hybrid between Laburnum Alpinum and Laburnum vulgare. It is sturdy, and produces very long and well flowered racemes late in May. It is well worth planting on a large scale.