INFLORESCENCE AND FLOWERS FRUIT AND SEED 133 



nr E, 



FIG. 37. Transverse sections of the pericarp (in.) and 

 seed (vi.) of the oak. E, epidermis ; i, thick layer of 

 sclerenchyma. Under this come the parenchyma cells, 

 with a few sclerenchyma cells here and there. T, testa 

 of seed ; G, vascular bundles ; e, the outer layer or epi- 

 dermis of the cotyledon ; Co, thin-walled cells of cotyle- 

 dons (cf. figs. 35 and 36) filled with starch, &c. 

 (Harz.) 



