SIE J. LUBBOCK— PlIYTOBIOLOGICAL OBSERVA^TIOXS. 



351 



Fig. y, 



Fig- 8. 



Seedling of Platanus, 

 Nat. size.* 



Fig. 10. 



Seedling of Chenopodiuin Bonus- 



Henriciis. Nat. size. 



Seedling of Acer rseudo-Platanus, 



HaJT nat. size. 



Fig. 11 



Seedling of E'lcinus sanguineus. 

 One fourth iiat. size. 



Avliile in others the cotyledons are broad and tlie leaves narrow, a3 

 in Ylax(LJnum 77wriOfff/mim)(Qg. ld\ Ilakca (fi^. 21), and the Pink 

 {Dianthns) (fig. 22), &c. 



In many eases we find instances of broad and narrow cotyledons 

 in the s^ame family, as in Chickweed (fig. 23) and Pink (fig. 22), 

 belonging to the Caryophyllacea> ; sometimes even in the same 

 genus, as Galium saccltaratum (fig. 2i) and Galium Aparine 

 (figs. 113 ifcH4). 



In some cases the two cotyledons are unequal, as in the 



