ALPINE, AQUATIC, & BOG GARDENS 71 



them the Canary Water-lily (N. M. chromatella), with 

 reddish brown leaves and soft yellow flowers, darkening 

 to the centre, is very beautiful. N. Robinsoni is another 

 fine variety with rose-coloured blooms, abundantly pro- 

 duced. Our own native lily (N. alba) flowers early, and 

 should be in every collection, but the variety rosea is a 

 shy bloomer, though the colour is extremely pretty. 

 N. tuberosa. 



Aponogeton. The Cape Pond-flower. A pretty water 

 plant, the flowers are white and delicately scented. It 

 requires fairly deep water, and does best in a warm 

 district. A. distachyon. 



Villarsia. Yellow Buckbean. Small lily-like leaves, 

 and a profusion of yellow flowers. 



Stratiotes. Water Soldier. Interesting on account of 

 its foliage. 



Shallow water is needed for the following : 



Typha Latifolia. The Common Bulrush. 



Sagittaria. Arrowhead. Handsome plants with white 

 blossoms and arrow-shaped leaves. 



Caltha Palustris. Marsh Marigold. 



Pontederia. Pickerel Weed. Graceful foliage, with 

 spikes of blue flowers. 



Butomus Vmbellatus. Flowering Rush. Bears umbels 

 of rosy flowers. 



Menyanthes Trtfoliata. Buckbean. Grows freely, the 

 scented white flowers being faintly suffused with pink. 



A few good plants for localising in marshy ground on 

 the margin : 



Iris Kaempferi. The Japanese Flag. A more strik- 

 ingly beautiful subject for the position could scarcely be 

 found. The sword-like foliage, and large handsome 

 flowers render it especially noteworthy. 



Gunnera. Prickly Rhubarb. Noble plants, with im- 

 mense fan-shaped leaves. They should be slightly 

 protected during winter. 



