MARYLAND GEOLOGICAL SURVEY 845 



in greatest width, which is the distal half of the leaf. Base cuneate. 

 Midrib slightly curved. Secondaries four or five subopposite pairs which 

 are thin, ascending and camptodrome. Tertiaries fine. 



This small species was described by the writer from material collected 

 in the Magothy formation of Maryland and it is also found in the Tusca- 

 loosa formation of Alabama. It appears to be entirely distinct from the 

 other known Cretaceous species, of which there are several. It resembles 

 more or less some of the various leaves which have been identified as 

 Colutea primordialis Heer from Greenland, the Atlantic Coastal Plain, 

 and the Western Interior. 



Occurrence. MAGOTHY FORMATION. Grove Point, Cecil County. 



Collection. Maryland Geological Survey. 



COLUTEA PRIMORDIALIS Heer 

 Plate LXXV, Fig. 3 



Colutea primordialis Heer, 1882, Fl. Foss. Arct., Bd. vi, Ab. ii, p. 99, pi. 



xxvii, figs. 7-11; pi. xliii, figs. 7, 8. 

 Colutea primordialis Lesquereux, 1892, Mon. U. S. Geol. Survey, vol. xvii, 



p. 148, pi. xiii, figs. 8, 9. 

 Colutea primordialis Hollick, 1894, Bull. Torrey Bot. Club, vol. xxi, p. 56, 



pi. clxxiv, fig. 2. 

 Colutea primordialis Newberry, 1896, Mon. U. S. Geol. Survey, vol. xxvi, p. 



97, pi. xix, figs. 4, 5. 



Colutea primordialis Hollick, 1907, Ibidem, vol. 1, p. 84, pi. xxxii, figs. 14, 15. 

 Colutea primordialis Berry, 1910, Bull. Torrey Bot. Club, vol. xxxvii, p. 24. 

 Colutea primordialis Berry, 1911, IMdem, vol. xxxviii, p. 407. 

 Colutea primordialis Berry, 1911, Bull. 3, Geol. Survey of New Jersey, p. 



156, pi. xx, fig. 4. 



Description. " C. foliolis membranaceis, breviter petiolatis, pollicari- 

 bus, ovalibus, integerrimis, basi attenuatis, apice profunde emarginatis, 

 nervis secundariis subtilissimis, camptodromis." Heer, 1882. 



This species was described from the Atane beds of west Greenland and 

 subsequently recorded from the Dakota sandstone of Kansas, the Karitan 

 formation of New Jersey, and the Magothy formation of Marthas Vine- 

 yard and Long Island. Typical forms are not uncommon in the upper 

 part of the Magothy formation at Grove Point. 



Occurrence. MAGOTHY FORMATION. Grove Point, Cecil County. 



Collection. Maryland Geological Survey. 



