38 THE BOOK OF SHRUBS 
twenty-five feet when fully developed, forms a com- 
pact roundish head, and produces in great profusion 
medium-sized spikes of bright red flowers. Few 
objects are more attractive when in bloom than this fine 
tree, and it is especially adapted to the requirements of 
suburban gardens. It commences to produce its hand- 
some flower spikes at an early age, is comparatively 
slow in growth, and suffers but little from atmospheric 
impurities. The variety known as 4%. rubicunda Briotti 
has flowers deeper in colour than those of the ordinary 
form, and is of much merit. 
The chestnuts belonging to the Pavia group are of 
much smaller growth than the foregoing, and are 
desirable in gardens of considerable extent. They form 
small trees or large shrubs, ranging from eight to twelve 
feet high, and have a neat spreading habit. The 
flowers are borne in erect spikes at the tips of the 
branches, and resemble in general character those of the 
Horse Chestnut. 
The most beautiful of the species are 42. parviflora 
(syn. Pavia macrostachya) which has long spikes of 
fragrant white, with long stamens and red anthers, and 
48. pavia (syn. Pavia rubra). These two species will 
thrive in any ordinary soil, but where the soil is light 
and sandy they should receive a top dressing of well 
rotted stable manure every second year, the manure to 
be applied to the space kept free from grass, and be 
lightly pricked in. They appear to the greatest 
advantage when occupying isolated positions on the 
lawn. 
AMELANCHIER OR SNowy MespiLus.—These form a 
small group of extremely elegant spring flowering trees. 
The most beautiful of the species in cultivation is 
Amelanchier canadensis, introduced from Canada about 
the middle of the eighteenth century, and this should 
have a place in gardens of even small size. Under 
