226 THE AMEBIC AN NATURALIST [Vol. XLVIII 



Already the [caves which immediately follow the coty- 

 ledons serve to distinguish plants of this type from all 

 others. At the ten-leaf stage even the casual observer is 

 able to segregate them at once from the other rosets. 

 The leaves are acicular and the cotyledons far larger 

 than those of the seedlings of the other forms. The 

 greater size of the cotyledons may be attributed to the 

 insufficiency of the subsequent leaves. 



If one removes the terminal bud of seedlings of Atri- 

 plex hortensis or one of its color varieties, it will be found 

 that the cotyledons increase in length far beyond normal, 



conditions the leaves of X C anwhnoidea may reach a 

 length of 100 mm., with a greatest width of 6 mm. (Fig. 

 16). The stem ordinarily is weak, having a diameter of 

 only 1 mm. It may reach a length of 30 cm. (Fig. 17). 



