Trill 



BOTANY. 



The embryo either occupies the whole of the seed-cavity, in 

 exalbvminous seeds (Figs. XL VI and XLVII), or it lies in or in con- 



Fio. XLV.— Albuminous seeds: 1, of Moonseed; 2, of Chenopodium, each 

 with a curved embryo; 3, of Marsh Marigold (Caltha) with minute straight 

 embryo. 



tact with the endosperm, in the dtbuminous seeds (Fig. XLV). 

 It is straight — e.g., the pumpkin; or variously curved and folded 

 — e.g., in Erysimum, where the cotyledons are incumbent, i.e., 

 with the little stem folded up against the back of one of the 

 cotyledons, and in Arabis (Fig. XL VI), where they are accumbmt, 

 i.e., with the little stem folded up so as to touch the edges of 

 the cotyledons (Fig. XLVII.) 



Fia. ZLVI.— Incumbent cotyledons of Erysimum: 1, longitudinal section of 

 seed; 3, cross-section of seed. 



Fio. Xl^Vn.— Accumbent cotyledons of Arabis: 1, longitudinal section of 

 seed; 2, cross-section of seed. 



