BERRY: MESOZOIC FLORA OF THE COASTAL PLAIN 193 
while three species of Quercophyllum have been described from 
the older Potomac of Virginia their botanical relations are ex- 
tremely doubtful. The New Jersey Raritan has yielded but a single 
fragment of a leaf which Newberry doubtfully refers to Quercus 
JSohnstrupt Heer, while there are none reported from Alabama, 
although six are known from the Magothy formation. Nor is the 
genus present in the lower Cretaceous of England, Portugal, or 
Bohemia. In Greenland the Atane beds have six species and the 
Patoot beds eight, while the Dakota group contains the remarkable 
number of eighteen, exceeding even the number in the European 
Senonian, where Quercus is so prominent an element. 
URTICALES 
Planera cretacea sp. nov. PLATE II, FIGURES 7, 8 
Ovate-lanceolate, rather unsymmetrical leaves, 3-7 cm. long, 
by 1-2.7 cm. wide, tapering at the base and tip, the latter gradu- 
ally narrowing to an acute point. Margin entire below, with 
sharply serrate teeth above. Midrib moderately stout. Second- 
aries leaving the midrib at an acute angle, alternate or sub-opposite, 
parallel and curving, becoming obliterated toward their tips in the 
lower part of the leaf and extending into the serrations in the 
upper part. Represented by several imperfect specimens from 
Blackman’s Bluff and two or three better preserved fragments from 
the locality one half mile below Blackmans Bluff on the Neuse 
river. 
Planera seems to be unknown in the Mesozoic rocks of Europe, 
while the various forms found in the Tertiary of that region, often 
showing a considerable range in variation, are referred to the 
single comprehensive and probably polymorphic species Planera 
Ungeri Ettings. 
In this country there is one species in the Raritan of New 
Jersey * and a second in the Patoot beds of the west coast of Green- 
land, both smaller and quite distinct from the Carolina leaf, which 
does, however, somewhat resemble Carpinites microphyllus and 
Betula atavina Heer from the Patoot beds. The genus is largely 
developed in the American Eocene with six or seven species, the 
Green river shales furnishing the. majority of forms, and at the 
famous locality of Florissant,t Colorado, containing hundreds of 
* Hollick has recently described a fragmentary leaf from Gay Head, Marthas 
Vineyard, as Planera betuloides. U. S. Geol. Surv. Monog. 50: 57-f/. 8. f. 22. 1906. 
+ Possibly of Oligocene age. 
