} 



1^6 



BOTANICAL GAZETTE 



[august ' 



EMBRYO 



J 



'mbr\ 



id February no 

 A second collec- 



tion of cones forwarded late in February failed to arrive. In a third 



m 



were found to contain embryos in which the suspensors were well 

 developed. The suspensors are long and more or less spirally coiled 



(figs, 40, 41) y the one shown in fig 



^^ long. 



A dozen or 



more embryos may be found in a single gametophyte. The pressure 

 of the spiral suspensor is such as frequently to lift the nucellar cap 



when the hard seed coat is removed. 



bry 



jj^--- ^ 



-_ '\ 



y. 





^yMr'^. 





.^ 



^ 



H 



Fig 14 — Staminate sporophylls; the two at the left show the adaxial surface, the 

 two at the right the abaxial surface, the middle one a lateral view. 



would hold it firmly against the endosperm. Frequently suspensors 

 pass upward through the archegonia and over the gametophyte under 

 the nucellar cap {fig, 41). No embrj-os were found in any archegonia 

 except those at the micropylar end of the gametophyte. 



While material was being collected in Januarj^ and February, 

 seeds were found on the ground at the bases of plants that had ripened 

 ovulate cones the preceding year, and some of them had germinated. 

 The fleshy seed coat was gone, and in many cases there were scars 

 upon the hard seed coat, evidently made by the teeth of animals; in 

 some cases the empty seed coat appeared to have been opened by 

 animals. 



Within the mature 



a 



em 



o 



median 



made 





