CYCADALES. 75 



Newb., Fl. Amboy Claye, 44. pi. ij, f. i, j, 4, 1896 (non 



Zamites angustifolius Eichwald, Lethsea rossica, vol. 2 : 39, pi. 2, 



Podosamites Knowltoni Berry, Bull. Torrey Club, vol. 36 : 247, 

 1909. 



Description. — '"Foliolis elongato-lineali-lanceolatis, centim. 6 

 circiter longis, infra medium millim, 5 latis, basimversus margine 

 inferiore subitius angustatis quam superiore, decurrentibus, sat 

 approximitis et erecto-patentibus." Schimper, 1870. 



In 1870 Schimper referred the Zamites angustifolius of 

 Eichwald to this genus, overlooking the fact that Schenk four 

 years earlier had described and named a species of Podozamites 

 angustifolius. The natural impulse would be tO' call this P. 

 Bichwaldi, but Eichwald has already had a species of Podoz- 

 amites named for him in consequence of which the above name is 

 proposed in honor of Dr. F. H. Knowlton of the U. S. National 

 Museum. This species has a wide range, both geological and 

 geographical. It is common in the Jurassic of high latitudes in 

 Russia, Siberia, Bornholm, and Spitzbergen, and in the Upper 

 Cretaceous indistinguishable remains are widely distributed in 

 America. The abundant Raritan remains are long-lanceolate, 5 

 cm. to 15 cm. in length b)'' 6 cm. to 1.2 cm. in width, the base 

 narrowed to a short petiole, the summit being long pointed 

 and the venation fine. They are similar to the leaflets of 

 Podozamites lanceolatus, but are usually longer, narrower and 

 more flexuous in outline. 



All of the Raritan species of Podozamites, in common with 

 those from other localities and horizons, which are based on 

 detached leaflets, are extremely unsatisfactory from the stand- 

 point of the botanist, since their true position remains doubtful. 

 It has been suggested by more than one author that some of these 

 remains ascribed to Podozamites were not cycad leaflets at all, 

 but were probably referable to the Araucariese or some other 

 sub-family of the Coniferales, but the available facts do not war- 

 rant any definite conclusion at the present time, and until positive 



