STATUS OF THE MESOZOIC FLORAS OF THE UNITED STATES. 



SECOND PAPER.« 



By Lester F. Ward and others. 



P^A^RT I. 



THE TRIASSIC FLORA (Continued). 



As it will probably be many years before it will be possible to return 

 to the subjects discussed in the first paper of this series in the Twen- 

 tieth Annual Report, it seems advisable to publish at this time all the 

 additional matter that has accumulated since that paper appeared. 

 This consists of two rather important series of facts, one relating to 

 the Trias of the Southwestern area, being the result of investigations 

 in Arizona during the months of May and June, 1901 ; the other con- 

 sisting of Piofessor Fontaine's report, giving descriptions and figures, 

 on the plants collected in the Jurassic of Oregon in September, 1899. 

 Both of these results were anticipated in the first paper (pp. 319-323, 

 374-377), but the brief notes there given would be ver}' incomplete 

 without the additional matter that is now available. A brief account 

 will also be given of some additional specimens of Jurassic cycads from 

 the Freezeout Hills of Wyoming, collected since the first lot was 

 received and described in the first paper. 



THE OLDiEB MESOZOIC OF ARIZOIVA. 



The brief reconnaissance made by me from November 3 to 16, 1899, 

 an account of which was given in the first paper (pp. 320-332), only 

 sufficed to indicate in a general way the great interest that attaches 

 to the region visited and the possibilities it possesses from both the 



"■The first paper appeared in Twentieth Ann. Rep. U. S. Geol. Suirey, Pt. II, 1900, pp. 211-748, pis 

 xxi-clxxix. 



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