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If a flowering vine, all the better, but shade is the all-important consideration." The best large-growing vine for this purpose, all things considered, is the Wild Cucumber. No other annual vine exceeds it in rapidity of growth.

North America, 1743. Amongst large-growing shrubs this is certainly one of the most distinct and handsome, and at the same time one of the hardiest and readiest of culture. Under favourable conditions it grows about 16 feet high, with large oval or oblong leaflets, and having the young branches densely clothed with bristles.

A large-growing kind, attaining a height of several feet, very broad, and, as the name denotes, cylindrical in shape. When large, the stem often develops lateral branches about its base.

There are, in the Kew collection, several large plants of P. Hookeri that flower annually during the summer and autumn. Brazil. Mag. 3813. This is another large-growing species, as large at least as P. Hookeri, to which, indeed, it bears a close resemblance, both in flowers and in habit.

This is a large-growing shrub of often 10 feet in height, with wiry, somewhat straggling branches, and remarkable for the wealth of pure-white flowers it produces. In May and June, if favourably situated, every branch is wreathed with small white flowers, and often to such an extent that at a short distance away the plant looks like a sheet of white.

Both this and the following species, by reason of the resemblance between their female catkins and those of the Hop, and between their leaves and those of the Hornbeam, have acquired the very descriptive name of Hop Hornbeam. This is a large-growing tree, specimens in various parts of the country ranging in height from 50 feet to 60 feet. O. VIRGINICA. Virginian Hop Hornbeam.

As an ornamental flowering lawn shrub it has few equals, the blossoms remaining good for fully a fortnight. They are large-growing species, and, particularly the latter, are finding favour with cultivators in this country on account of their bold and ornamental appearance. PTELEA TRIFOLIATA. Hop Tree, or Swamp Dogwood. North America, 1704.

A large-growing, deciduous climbing shrub, remarkable for its ample foliage, and curiously formed yellow and purple streaked flowers. A native of North America, it is perfectly hardy in this country, and makes an excellent wall plant where plenty of space can be afforded for the rambling branches.

At Kew, it is the common practice, when the large-growing specimens get too tall for the house in which they are grown, to cut off the top of the stem to a length of 6 ft. or 8 ft., and plant it in a pot of soil to form a new plant.

For planting in situations where large-growing subjects would be out of place this is a valuable tree, while the wealth of flowers renders it particularly interesting and effective. It rarely exceeds 30 feet in height, with leaves not unlike those of the common Ash, and conspicuous panicles of light, feathery, white petaliferous flowers, produced usually in great abundance all over the tree.