36 
BEAUTIFUL GARDEN FLOWERS. 
numerous varieties, botli double and single. Among 
the latter Wittmanniana, with bright purple and 
white flowers, deserves special mention. 
Besides the above, there are now many beautiful 
hybrid Columbines raised from such kinds as chry- 
satha, coerulea, glandulosa, sibirica, Slcinneri, and vul- 
garis (Plate 14, fig. 40). They possess great range of 
colour and size, and those forms having the brightest 
and purest shades, and longest spurs are most highly 
prized. Amongst the best known forms are coerulea 
hybrida, and its double -flowered form ; californica 
hybrida, red and yellow ; haylodgensis, blue and yellow; 
caryophylloides, red and yellow with double forms ; 
grandiflora, blue ; Stuarti, a fine form closely related 
to glandulosa with large bright blue and white 
flowers. 
ARABIS albida {Rod- Cress). — Of the 60 or more 
species belonging to the genus, this is the best known 
in gardens. It is a procumbent perennial with bluntly - 
toothed grey-green leaves and white cross-shaped 
flowers from January to May. It flourishes in any 
garden soil and spreads with great freedom, making a 
good evergreen carpet beneath taller plants. It is 
also useful for the rock garden, and as an edging to 
borders and beds. The variegated form is easily 
recognised by its foliage. Of late years the double 
white form called flore pleno or “ Snowdrift,” has 
become very popular, not only because it is as free 
as the common form, but because its pure white double 
blossoms, with many petals, retain their freshness for 
a longer period. The species known as alpina has 
also white flowers, and is often confused with albida 
