The above include most of the hardy Genistas, though G. capitata and G. daurica, both very ornamental kinds, might be added to the list.  They are all very hardy, free-flowering shrubs, of simple culture, and succeeding well in any light and rather dry soil.

GLEDITSCHIA.

GLEDITSCHIA TRIACANTHOS.—­Honey Locust.  United States, 1700.  As an ornamental hardy tree this is well worthy the attention of planters, the pinnate and bipinnate foliage being particularly elegant, while the flowers, though individually small, are borne in such quantities of fascicled racemes as to attract notice.  The stem and branches are armed with formidable prickles, but there is a form in which the prickles are absent.  A native of North America, and readily cultivated in any soil of even fair quality.  For town planting it is a valuable tree.  There is a good weeping variety named G. triacanthos pendula.

G. SINENSIS (syn G. horrida).—­China, 1774.  This nearly resembles the latter, and is occasionally to be met with in cultivation in this country.

GORDONIA.

GORDONIA LASIANTHUS.—­Loblolly Bay.  North America, 1739.  A shrub of great beauty, but one that, unfortunately, is rarely to be seen outside the walls of a botanic garden.  It is of Camellia-like growth, with large, sweetly fragrant flowers and a good habit of growth.

G. PUBESCENS.—­North America, 1774.  This is of smaller growth than the latter, rarely exceeding about 6 feet high, with large white flowers that are rendered all the more conspicuous by the tuft of golden stamens.  Both species are somewhat tender, although hailing from the coast, swampy grounds of the southern States of North America.  Planted in favoured sites, they usually grow freely in light, peaty soil, or that containing a large admixture of decayed leaf soil.

GRABOWSKIA.

GRABOWSKIA BOERHAAVIAEFOLIA.—­Peru, 1780.  This is occasionally to be seen in sheltered and favoured gardens, but it is not to be relied upon in other than southern and seaside districts.  The plant is of no particular interest to the cultivator, the outline being ungainly, while the pale blue flowers are both dull and uninteresting.  It belongs to the Solanum family, and is only worth cultivating as a curiosity.  Light, warm soil and a sunny position are necessities in the cultivation of this shrub.

GRISELINIA.

GRISELINIA LITTORALIS.—­New Zealand, 1872.  This forms a compact bush of moderate size, and is fairly hardy.  The leaves are of a light, pleasing green shade, coriaceous, and glossy, and remain on the plant during winter.  It is an excellent shrub for the seaside, and, moreover, will succeed well in stiff soils where many other plants would refuse to grow.