568 



ON SEEDLINGS 



Leaves simple, entire, radical and cauline, alternate, exstipulate, 

 petiolate, glabrous in seedling, hairy on both sides in the adult, 

 alternately and ascendingly or subincurvedly penninerved, with a 



Jnv.Cf. 



FIG. 364. (Enothera biennis, x 28. A, longitudinal section of 

 seed : 0(7, testa ; 1C, tegmen ; R, radicle. B, transverse section of 

 seed : OC, testa ; 1C, tegmen ; C, cotyledon. C, transverse section 

 of another common form of embryo and seed : Inv. C, involute 

 cotyledon. 



PIG. 365. (Enothera biennis, 



prominent midrib ; petioles flattened above or subchannelled on the 

 cauline leaves, somewhat dilated at the base. 



Nos. 1 and 2. Ovate, obtuse or subacute, shortly petiolate. 



Ultimate radical leaves oblong, acute, tapered for some consider- 

 able distance at the base into the petiole ; cauline shortly tapered 



