II. CANNACEiB. 



757 



lization see' p. 156). Anaeharis, a native of America, is now abundant in Nortt Europe, where it has 

 increased so rapidly as to impede navigation in many parts of England. Hydroeharis and Stratiotes 

 also abound in North Europe, where they are utilized as manures. Blyxa is a native of India and Mada- 

 gascar. The herbage of HydrooJiaridece is mucilaginous and moderately astringent ; SydrocJiaris Morsus- 

 rancB was formerly employed with Nynvphtea. Ottelia and Boottia are eaten by the Indians, but form a 

 poor vegetable [the starchy rootstock is the part eaten]. The tubers and fruits of Enhaais, n Indian 

 and Celebes plant, are edible ; the fibre of its leaves is textile. 



11. CANNACEyE, 



[Gkss^m, Br. — Oann-ace^, ^jrardA..— Marantacb^, Lindl.) 



Flowers ? . Peeiaitth superior, double ; outer herhaceous, S-phyllous ; inner 

 petaloid, irregular, composed of petals and staminodes. Stamen solitary, lateral ; 

 ANTHER \-celled. 0\KRT inferior, Z-1-celled; OYXShUS campylotropous or anatropous. 



Tlialia deaWata, 

 Diugram. 



Canna speciosa. 



Canna. 



Vertical section of seed, 



siiowing the thickened endo- 



pleura near the mioropyle. 



Thalia. 

 Hooded staminode. 



