Class III. Order I. 11 



14. CIRCJSA. 

 CIRCJEA LUTETIANA. L. Enchanter's nightshade. 



Stem erect ; leaves ovate, slightly toothed, opaque, 

 pubescent. 



Syn. CIRCAEA CANADENSIS. MM. 



Stem round ; leaves opposite. Flowers in terminal racemes ; 

 petals inversely heart shaped, reddish white ; capsules roundish, 

 covered with minute hooks ; stalks of the capsules bent hack- 

 ward. Moist woods, particularly on Chelsea beach island. June, 

 July. Perennial. 



CIRC^A ALPINA. L. Jilpine enchanter's nightshade. 



Stem branched ; leaves broad-heart shaped, mem- 

 branous, toothed. 



A smaller and more humble plant than the preceding-, with 

 very distinct heart shaped leaves. Capsules reflexcd. pubescent. 

 In old woods. July. Perennial. 



Class III. TRIANDRIA. Three stamens. 



Order]. MONOGYNIA. One style. 



A. Flower's superior. 



15. IRIS. Corolla six parted, the divisions alter- 

 nately reflected ; stigmas petal form. 



B. Flowers inferior. 



16. XYRIS. Corolla three petalled ; calyx two 

 valved ; capsule three celled. 



C. Flowers grassy. 



17. SCHCENUS. Corolla none ; calyx of fascicled, 

 chaffy scales ; seed one, roundish. 



