AQUATIC PLANTS, HARDY FERNS, ETC. 253 



those last described. They bloom more freely, showing 

 flowers from July to September, if planted in shallow 

 warm-water ponds or basins. They can also be grown in 

 tubs with good success, but the roots must be wintered 



FIG. M8. HOSE FLO \VEUEU WATER-LILY (Aymphwa odorata rosea). 



in a greenhouse-tank or be purchased at the beginning 

 of every season. If considerable skill is exercised by cover- 

 ing the plants with barrels, then with leaves and straw, 

 they may be carried over winter in the tank or pond. 



They may be divided into two groups: i.e., first, those 

 blooming during the day, opening in the morning and 

 closing at night; and second, those opening in the evening, 

 remaining open during the night and until toward noon 

 the following day. 



The best of the DAY-BLOOMING varieties are: PURPLE 

 ZANZIBAR OR AFRICAN LILY (Nymphcea Zanzibar ensis), 

 Fig. 149, EOYAL PURPLE AFRICAN LILY (N. Z. aznrea), 

 SUPERB AFRICAN LILY (N. Z. superla}. These species 

 may be had in bloom constantly from July to September, 

 if planted in rich soil in shallow, warm water in ponds, 

 basins, or tubs. For the best results in tubs they should 



