106 Alpine Plants. 
Sanguinaria canadensis, and c. major (N. America). 
A useful rock plant, preferring a south or south- 
east aspect, in warm sandy loam. It will, however, 
do equally well facing north, if planted in a well- 
drained position, and in a compost to which a little 
more sand has been added. Sanguinaria canadensis 
grandiflora is a very fine variety, and quite as easy 
to grow as the type. 
Saponarias. 
All the species are of fairly easy culture between 
stones in sunny positions having a south aspect, in 
gritty loam and sand. In spring partially cut back 
the old plants, as this keeps them more compact and 
makes them flower better. 
Saponaria czxspitosa (Pyrenees). 
Plant on the flat facing full south, wedged 
between stones, or, if without stones, entirely sur- 
rounded with grit, in half poor loam and half grit. 
Saponaria lutea (Alps). 
Treat like Saponaria czspitosa. 
Saponaria ocymoides alba (Switzerland, Italy, etc.). 
It is better to grow this plant on the north side 
of the rockery, on account of its white flowers, which 
then maintain their pure whiteness much longer and 
have an extended period in bloom. 
Sarracenia purpurea (N. America). 
A very useful and striking plant for the bog or 
pond-side. If it is planted on a bog, the north side 
suits it best; but if on the side of a pond it should 
have a full south position where the roots can just 
