VITIS HETEROPHYLLA HUMILIFOLIA.—­Turquoise-berried Vine.  North China and Japan, 1868.  The leaves of this Vine are three to five lobed, and the small flowers freely produced in slightly branching cymes.  The latter are succeeded by their most interesting and attractive berries, that ripen in September and October.  They are pale china-blue, marked all over with very dark specks.  The stems grow to a height of 4 feet to 8 feet, and should be trained against a wall in a sunny position to ripen the berries.  The plant is perfectly hardy.  The variety V. heterophylla variegata is a dwarf, low-growing plant with variegated leaves, and is used for pot work, for covering the ground in sub-tropical bedding designs, and might be used to great advantage for rambling over large stones in the rock garden.

WISTARIA.

WISTARIA CHINENSIS (syns W. sinensis, Glycine chinensis, and G. sinensis).—­Chinese Wistaria.  China, 1816.  This is the only species at all common in gardens, and by far the handsomest in cultivation.  It justly ranks amongst the most beautiful of hardy climbing shrubs, and is invaluable as a wall plant, or for clothing the bare stems of sparsely foliaged trees.  The purplish-lilac flowers are produced in long, drooping racemes in early summer.  W. chinensis alba has pretty white flowers; W. chinensis flore-pleno has not proved very satisfactory, but when seen at its best, which is, however, but rarely, the double flowers are both beautiful and showy; W. chinensis variegata has badly variegated foliage; and W. chinensis macrobotrys is a plant of great beauty with very long racemes of pale lavender flowers, but they vary a good deal in colour, those of some plants being almost white.  It is a very desirable variety, and one that when better known is sure to attract attention.

W. FRUTESCENS (syns Glycine frutescens and Thyrsanthus frutescens).—­North America, 1724.  This is a very handsome deciduous climbing species from North America.  The flowers, which appear towards autumn, are bluish purple and fragrant, and borne in erect racemes.  It is quite hardy and equally suitable with the Chinese species for using as a wall covering.  W. frutescens magnifica is an improved form of the species.

W. JAPONICA.—­Japan.  A bush-like species bearing white flowers, but it is rarely seen in cultivation.  It is, however, quite hardy, and succeeds well in the bush state at Kew.

W. MULTIJUGA.—­Japan, 1874.  Resembles somewhat our commonly-cultivated species, and has pale purple flowers arranged in long racemes.  It is a very ornamental and desirable species, but the flowers are not borne in great quantity.

The Wistarias are of simple culture, but succeed best in rather rich alluvial soil, and where protection from cold winds is provided.

XANTHOCERAS.