large heads of pure white flowers, and is suitable for borders, pots,
or forcing in a cool house. Any common soil suits it. It is increased
by off-sets. Being one of our earliest spring flowers, the bulbs
should be planted early in autumn. Height, 1 ft.

Allspice.--_See_ "Calycanthus" and "Chimonanthus."

Alonsoa.--A pretty and free-blooming half-hardy annual, which produces
fine spikes of orange-scarlet flowers in June. It is multiplied by
cuttings or seeds. Height, 1 ft. to 1-1/2 ft.

Aloysia Citriodora.--This favourite lemon-scented verbena should be
grown in rich mould. If grown in the open, it should be trained to a
wall facing south, and in winter the roots need protecting with a heap
of ashes and the branches to be tied up with matting. It is increased
by cuttings planted in sand. August is its flowering season. Height, 3
ft.

Alsine Rosani.--This pretty little herbaceous plant, with its cushions
of green growth, makes a very fine display on rock-work or in any
shady position. Ordinary soil suits; it is of easy culture, and
flowers during June and July. Height, 3 in.

Alstromeria (_Peruvian Lilies_).--These beautiful summer-flowering
hardy perennials produce large heads of lily-like blossoms in great
profusion, which are invaluable for cutting for vase decorations as
the bloom lasts a long time in water. Plant in autumn 6 in. deep in a
well-drained sunny situation, preferably on a south border. Protect
in winter with a covering of leaves or litter. They may be grown from
seed sown as soon as it is ripe in sandy loam. They bloom in July.