364 OCTANDRIA. T£TRAGYNIA. Myriophyllum, 



In muddy ditches, with little water, it appears as follows. 

 Stems 6 or 8 inches high,unbranched. Leaves not more than an 

 - inch long; leafits If or 2 lines long. In ponds as follows. 

 Stems branching, 2 feet and more long* Leaves under water 1 J 

 to 2 inches long ; leafits half an inch long, hair-like and 

 slender. Spike or f inches long, with 12 to 16" or more 

 whirls, the lower ones about half an inch distant, the upper 

 nearer, with 4 or 5 winged leaves at each whirl, about half an 

 inch long, leafits about 1 line long. Flowers in the bosom of the 

 leaves, similar to those of M. spicatiim ; those of the upper whirls 

 usually male; those of the lower female, and sometimes the 

 upper male, the middle one hermaphrodite, and the lower female* 

 Mr. Woodward. Flowers greenish. Anthers yellow. 



Whirled Mill/oil. Ditches and stagnant waters. Huds. 

 rare. Pet. — [Ditches near Bungay, Suffolk, and near Yarmouth. 

 The large sort in a pond at Hedenham, Norfolk, on a strong 

 clayey soil, Mr. Woodward.] P. June, July* 





/ 



CLASS IX. 



ENNEANDRIA. 



DIGYNIA. 



MERCURIA'LIS. Mowers, male and female on 



- plants : Cal. with 3 divisions : Bloss. none. 

 M. Stem. 9 to 12 : Anthers globular; double. 

 F. Caps. 2 j united; each with 1 cell and 1 see< 



[Quercus.J 



HEXAGYNIA. 



* 



BUTOMUS. Involucr. simple ; of 3 leaves: Bloss. 6 pe- 

 tals : Caps. 6 : Seeds many. 



JIYDRO'CHARIS. Flowers male and female on distinct 



plants: Ca/."3-cleft: Bloss. 3 petals. 



M. Sheath 2 -leaved: Filaments, the 3 inner ones 

 bearing a kind of style. 



F, Caps. 6*celled; many-seeded; beneath, 







