PLANTS WORTH GROWING 133 
and arching racemes of red and white heart-shaped 
flowers make the finest display when grown in peaty 
or leafy soil in cool, shady places. The plant does 
well among groups of shrubs. 
Dictamnus. — Commonly labelled Dictamnus 
fraxinella and fraxinella alba, but more correctly 
named D. albus and Albus purpureus, this plant is 
also called the Burning Bush. The aptness of this 
name may be demonstrated on a still Summer's 
evening by placing a lighted match close to its 
flower spikes. The whole plant will be momentarily 
enveloped in flame, which, however, quickly dis- 
appears, leaving the flowers even of the white 
variety quite unharmed. The phenomenon is due 
to exudation of a volatile oil which hngers in 
vapour around the plant. The foliage is handsome, 
and the flower spikes of both the ruddy purple and 
the white varieties are pretty. 
Stock may be raised from seed which is freely 
produced, and may be sown in the open as soon as ripe. 
Digitalis. — The Foxglove {Digitalis purpurea), 
although a native Wildflower, is not to be despised. 
Its taU spikes of pendant bells shaded and spotted 
in varying and delightful manner are capable of 
producing fine effects in dry, hungry soils, whilst 
for naturalizing in the wild garden or woodland 
they have few superiors. Sow seeds and treat as 
biennials. There are one or two yellow-flowered 
species which are novel and interesting, D. ambigua, 
and D. lutea being both worthy of cultivation. 
