50 THE FLORA OF THE AMBOY CLAYS. 
SEQUOIA GRACILLIMA (Lesq.) Newb. 
1214 AD. salege NG 
Glyptostrobus gracillimus Lesq., Am. Jour. Sci., 2d series, Vol. XLVI, p. 92. 
In the American Journal of Science (loc. cit.) and in his Cretaceous 
Flora, p. 52, Mr. Lesquereux has described a slender-branched conifer from 
the Dakota group near Sioux City, which he referred to the genus Glypto- 
strobus ‘fon account of the form and mode of division of its branches, of 
the scale-like leaves without nerves, and of the form and position of the 
male catkins.” At the latter date, however (Cretaceous Flora, p. 53), he 
was disposed to identify this plant with Frenelites Reichii, described by 
Ettingshausen in his Cretaceous Flora of Niederschoena. There is little 
doubt, however, that both references were erroneous, as the foliage is more 
like that of Sequoia than Glyptostrobus, and cones which I have from the 
same localities that furnished Lesquereux’s specimens are distinctly those 
of Sequoia and very different from those of any species of Glyptostrobus 
known. 
The specific name gracillimus, given by Lesquereux, was well deserved, 
since the branches are extremely slender and the only form of foliage seen 
is short and appressed. Beautiful cones of the same species occur in the 
Amboy Clays near Keyport, and a complete one of this kind may be seen 
on Pl. IX, fig. 1. They are cylindrical, 5°" or more in length by 1™ or 
more in breadth. Immature ones are depicted in figs. 2 and 3 of the same 
plate. 
Apparently the same plant is described and figured by Heer in his 
Flora Fossilis Arctica, Vol. VII, p. 16, Pl. LI, fig. 13. The form of the 
cone is similar to that of the genus Geinitzia, but the foliage is widely 
different, and as the leaves and fruits are associated in my specimen, there 
can be no doubt that our plant is not a Geinitzia. 
o branchlets 
to) 
Professor Heer also figures, on Pl. LI, a slab containin 
and leaves of a conifer which closely resembles the one under consideration, 
and on the same specimen a cone is represented which has the cylindrical 
elongate form of ours; so I can not doubt that this plant, which he calls 
Sequoia macrolepis, is the same as that previously described by Lesquereux 
as Glyptostrobus gracillimus. 
