ALPINE PLANTS. 75 
has a tendency to grow out of its place, and 
should be replanted every other year or so— 
that is where you cannot top-dress. If 
planted on the level of course you can fill 
in among the growths every year with a 
top-dressing of limestone and strong loam. 
P. cthlata v. purpurea requires to be planted 
firmly in a strong clayey loam, and should be 
looked to every spring as regards top-dressing ; 
south aspect. PP. calycina should have a 
north-east aspect, well-drained position, rough 
loam and limestone, two parts each. /P. 
Clustana, south-west aspect; peat, loam, and 
sand—two parts loam, one peat, one sand. 
P. frondosa, south aspect; good strong loam, 
with a little sand. P. glutenosa, shady place 
or north aspect; peat, loam, and = sand; 
if a damp position the place should be 
drained. PP. <involucrata, north aspect ; 
strong loam, with a little peat added. 
Care should be taken to top-dress every 
autumn, as it has a tendency to grow out of 
the ground. If top-dressed carefully it will 
increase fast, and soon make a fine clump 
on the side of a bog where the soil is pretty 
firm. #. latifolia will do under the same 
