KIVER GARDENS; 



the following will be found suitable to the Aqua- 

 rium, taking care to select those of small growth for 

 tanks of ordinary size, while all kinds may be grown 

 with success if sufficient space be allowed, especially 

 in Aquaria on a large scale established in conserva- 

 tories, which are now becoming very general : 



Alisma plantago The Greater "Water Plantain. 



Alisma natans The Floating "Water Plantain. 



Stratiotes aloides The Water Soldier, orWater Aloe. 



Iris pseudacorus . * , . . The Yellow Water Iris (Plate 



VIII., No. 4). 

 SydrocJiaris morsus rani . . . The Frogbit. 



Sagittaria sagittifolia The Arrowhead. 



Potygonum amphibia The Amphibious Persecaria. 



Hottonia palustris The Featherfoil, or Water Violet. 



Ranunculus aquatilis The "Water Crowfoot. 



Veronica Beccabunga Common Brooklime. 



Nasturtium officinalis Common "Watercress. 



Butomus umbellatus The Flowering Eush. 



Teucrium scordium "Water Germander. 



Microphyllum spicata Water Milfoil. 



Tubularia aquatica The Aquatic Owlwort. 



Hippuris vulgaris The Common Marestail. 



Callitriche verm The Water Starwort. 



Ceratophyllum demersum . . . The Hornwort. 



The Lemna tribe Duckweeds. 



Aponogiton distachyum .... The Cape Aponogiton. 

 Potamogeton pectinatus (and other \ 



species). . ..... JTliePondweeds. 



Anacharis alsinastrum. 



Lastly, the most important and useful of all, 

 Valisneria spiralis. 



