CONIFERALES 



299 



The relation of the ovule to associated structures can be seen more 

 easily than it can be interpreted. In fig. 303 C, in this case, Law- 



n. 



Fig. 303. — Ovules of conifers: A, Sequoia sempervirens ; B, Pherosphaera; s, sporo- 

 phyll; C, Microcachrys; D, Saxagothea conspicua; b, bract; 0, ovuliferous scale; /, integu- 

 ment; n, nucellus; A, X95; B, X33; C, X66; D, Xas.— ^,«4 5,351 and C «° after Law- 

 son; D, after Noren.''" 



soN^^o claims that the ovule is borne on the face of a sporophyll. 

 The structure which we have marked b, he regards as the sporophyll, 

 while the one which we have designated as the ovuliferous scale (0), 



