174 FLOWERS OF GARDEN AND GREENHOUSE 
with spreading branches and oblong leaves. Flowers, 1} inch across, white 
delicately tinged with pink, rosy beneath, in umbels; May. Native. 
P. Mavter (Maule’s). Shrub, smaller and more compact than P. 
japonica, with bright red flowers; April. Introduced from Japan (1874). 
P. PRUNIFOLIA (Plum-leaved). Siberian Crab. Small tree, 20 to 30 
feet high, with egg-shaped, smooth, toothed leaves, similar to those of 
the Cherry; long-stalked. Flowers white, resembling those of P. 
communis ; stalks downy; April and May. Fruit yellowish, but bright 
red on side exposed to sun. 
P. Sorsus (Service-tree). The True Service. A tree, 20 to 60 feet 
high, similar to P. awcuparia, but larger. Leaves pinnate, but leaflets 
equal in size, woolly beneath, toothed towards the points. Flowers 
creamy, in panicles; May. Fruit larger than those of P. aucuparia, 
more pear-shaped, 1 inch long, dotted with red. Europe. 
P, SPECTABILIS (worthy of note). Chinese Crab. A tree, 20 to 30 
feet high, with smooth, oval-oblong, toothed leaves, and large, rosy or 
white flowers ; April or May. Fruit spherical, 1 inch across, on long 
stalks. The var. alba plena has double white flowers. 
hide A rich loamy soil, with a subsoil of an open character, 
is the most suitable for the genus Pyrus; they will not 
succeed where the subsoil is clay. The species may be grown from seeds, 
which should be carefully selected from good healthy trees. Varieties 
should be propagated by means of buds or grafts. Cuttings may also be 
struck, but it is neither a reliable nor a speedy method; yet we have 
Se ‘ald good results from the mere careless sticking-in of apple 
the a gray any art being practised. Most of these trees root near 
Pas ue erefore they require mulehings of manure in summer; the 
suitable strate. cod gene an is likely to find its way into some un- 
at oi : ee aa it is usually grafted on a Quince 
seabed a oh ne Iruit is desired, more elaborate instructions 
foe focal tie ‘aia ws up the ornamental character of these trees 
ener requirements are, to see to the renewal of the 
food for the roots ake, ; t 
out old wad » the judicious pruning of the branches, and cutting 
THORNS 
Natural Order Rosacez. Genus Crategus 
CraTaaus (Greek, kratos, 
Species of shrubs and sm Strength). A genus comprising about fifty 
all trees, often spiny, with simple, lobed or 
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