ALPINE PLANTS. 53 
stones on a sunny part of the rockery. 
Add a little loam and leaf-mould, and wedge 
very tightly between stones. 
IRIS CRISTATA, I. LACUSTRIS, and I. VERNA. 
These three little bog Irises require to be 
well looked after. If planted near anything 
which grows to any size they will soon be 
lost. They should be placed on the edge 
of small bogs or near the path-sides in 
dampish peaty soil, in partial shade. If 
planted on a damp bottom they may be 
planted in the full sun; then the growth 
will ripen better for the following year’s 
blooms. They require top-dressing every 
autumn and in the early spring with a 
mixture of peat, leaf-mould, and loam worked 
well amongst the roots. /. Douglasiana. To 
srow and flower this well it must be planted 
close to a stone facing south or south-west, 
in an elevated position. This Iris should be 
pressed close to the stone, then fill in with a 
compost of leaf-mould and rough loam mixed 
with a little grit. vis orchioides, bulbous 
species. A beautiful and early-flowering species ; 
it requires a similar position to Douglaszana ; 
limestone may be mixed with good loam in 
