Propagated by offsets, or cormels, and by seeds, which, however, are usually sparingly produced in cultivation.
Ampelopsis, Quinaria. Ampelideæ.
Increased by seeds, especially the one known as A. Veitchii. Layers or cuttings made in spring from the young soft wood, root freely in gentle heat. By cuttings having a good eye, if taken in September and pricked under hand-lights in sandy soil on the open border, or in pots. Hard wood cuttings are commonly employed in this country for A. quinquefolia.
Amphicarpæa. Leguminosæ.
Propagated by seeds, which should be sown in the open border, in spring, in a sunny place.
Amphicome. Bignoniaceæ.
Increased by seeds, sown in early spring, in pots of sandy soil placed in a greenhouse. By young shoots inserted in sandy soil in gentle heat in spring.
Amphilophium, Amphilobium. Bignoniaceæ.
Increased by cuttings from young shoots, which root readily in sand, under a hand-glass, with bottom heat, during the spring months.
Amsonia. Apocynaceæ.