MARYLAND GEOLOGICAL SURVEY 795 



subgenus Widdringtonia of the genus Callitris Vent., to which Eichler in 

 his treatment of the living species in Engler and Prantl (1887) refers 

 Endlicher's genus, or to the subgenus Eucallitris Brongn., which also is 

 characterized by four cone-scales. The latter has a single living species of 

 northern Africa and the former has three or four species of southern 

 Africa and Madagascar. The propriety of Eichler's classification may 

 well be questioned, and in any event paleobotanists must necessarily prefer 

 the older segregation of Frenela and Widdringtonia and their respective 

 form-genera. 



There seems to be but little doubt that the present species should be 

 referred to Widdringtonia, as Velenovsky and Krasser have done, but as 

 the term Widdringtonites is equally indicative of its true affinity, little is 

 to be gained by making the proposed change. 



This species, which is probably the most common conifer of the Raritan 

 formation, was described originally by Ettingshausen from the Cenom- 

 manian of Xiederschcena, in Saxony, as a species of Frenelites. When 

 Heer discovered it in the Greenland material, where it has been collected 

 from both the Atane and the Patoot beds, he transferred it to the present 

 genus. It has subsequently been reported from the Cenomanian of 

 Bohemia and Moravia, from the Magothy formation at numerous localities 

 and from the southern New England islands. It has also been reported 

 from the Tuscaloosa formation of Alabama, where it is abundant at a 

 number of localities. Heer made Glyptostrobus gracillimus Lesq., of the 

 Dakota group, a synonym of this species, and he has been followed by 

 many subsequent authors. 



In a recent paper Hollick and Jeffrey (op. cit.} have studied the 

 anatomy of fragments of twigs from the Raritan formation of Staten 

 Island, Xew York. They are led to claim a relationship with the Arau- 

 cariacece for this form. This is not at all conclusively shown by the speci- 

 mens studied and even were this evidence admitted for this material it 

 would scarcely affect the question of relationship of the great bulk of the 

 remains referred to Widdringtonites or Widdringtonia, since Ettings- 

 hausen and Krasser (op. cit.) have conclusively shown the relationship 

 with Widdringtonia by means of the megasporangiate cones. While these 

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