HUMPHREYS: TRIASSIC PLANTS FROM SONORA, MEXICO 77 



(Rogers) Schimper, which has been reported from Sonora, Mexico, 

 by Newberry. 



Order Equisetales 



Neocalamites Carrerei (Zeiller) Halle, Kgl. Svensk. Vet.-Akad. 



Handl. 43: 6. 1908 



Schizoneura Carrerei Zeiller, Fl. Foss. des Gites de Charbon du 

 Tonkin, I37-I43- P^- 3^- f- i^ 2; pi. 37. f. i; pi. 38. f. 1-8. 1903. 



This specimen though somewhat smaller is apparently identical 

 with that figured by Zeiller on pi. 37. f. i. So far as the writer 

 is aware this species has not heretofore been reported from North 

 America. 



SPERMATOPHYTA 



Order Cycadales 



Zamites Powellii Fontaine; Fontaine & Knowlton, Proc. U. S. 

 Nat. Mus. 13: 284. pis. 25, 26. 1890 



While not as complete as might be desired, there is enough 

 of the plant preserved to show its identity with Fontaine's species 

 from Abiquiu, New Mexico. 



Otozamites Macombii Newberry (?), Rep. Macomb Expl. Exped. 

 141. pi. 4. f. I, 2; pi. d.f.s, 5a. 1876 



This identification can hardly be used as the basis of any 

 conclusions in regard to the geology or paleobotany of the horizon 

 in which the specimen was found as it is too fragmentary to per- 

 mit of much more than an exceedingly provisional identification. 



Zamites (Otozamites ?) sp.? 



The remains of this plant are in so fragmentary a condition that 

 assignment to any particular species is precluded. 



Cycadeomyelon (?) sp.? 



The fragment included in this genus is so poorly preserved 

 that it would not be worthy of notice were it not for the fact 

 that it represents a distinct plant differing from any of the others 

 in the collection. 



