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REPRODUCTIVE STRUCTURES. 



present minor differences which, taken by themselves, are at least of distinctly spe- 

 cific value. The present cone will also be held by most paleobotanists to be specif- 

 ically distinct from that shown in figure 67; nevertheless it is difficult to determine 





S.Hoz. 



St 03. 



Fig. 67a.^Cycadeoidea Marshiana. T. 229. S. 399 ( X 3). and 402 and 403 (each natural 

 size). Serial transverse sections of ovulate cone shown in longitudinal section in the preced- 

 ing figures, and cut on the planes there indicated. In S. 399 the seed stems and inter- 

 seminal scales are in most instances cut throughout their entire length. The drawing shows 

 very exactly the projecting stigma-like tips of the seeds. (Cf. photographs of Plate 

 XXXIII.) 



its species, owing to the great variation of development in, and the extent of the 

 series of cones with, the various types of elongate and conical, rather than globular, 

 receptacles. At least this is not the usual form of the C. dacotensis fruits. 



