AE. PAVIA (_syn Pavia rubra_).--Red Buckeye. North America, 1711. A
small growing and slender-branched tree or shrub, which bears an
abundance of brownish-scarlet flowers. There are several good
varieties, two of the best being Ae. Pavia atrosanguinea, and Ae.
Pavia Whittleyana, with small, brilliant red flowers.

There are several other species, such as Ae. Pavia humilis (_syn Pavia
humilis_) of trailing habit; Ae. flava (_syn Pavia flava_) bearing
pretty yellow flowers; Ae. Pavia macrocarpa (_syn Pavia macrocarpa_)
an open-headed and graceful tree; Ae. flava discolor (_syn Pavia
discolor_); and Ae. chinensis; but they have not been found very
amenable to cultivation, except in very favoured parts of the South of
England and Ireland.


AILANTHUS.

AILANTHUS GLANDULOSA.--Tree of Heaven. China, 1751. A handsome,
fast-growing tree, with large pinnate leaves that are often fully
three feet long, and terminal erect clusters of not very showy
greenish-white flowers that exhale a rather disagreeable odour. It is
one of the most distinct and imposing of pinnate-leaved trees, and
forms a neat specimen for the lawn or park. Light loam or a gravelly
subsoil suits it well.


AKEBIA.

AKEBIA QUINATA.--Chinese Akebia. China, 1845. This, with its
peculiarly-formed and curiously-coloured flowers, though usually