(97) 



The generic determination of Ericaceous leaves is always 

 however a matter of extreme uncertainty, which is fully 

 shared by the following distributed American forms : Rari- 

 tan 6, Island Raritan i, Dakota 9, Woodbine i, Montana i, 

 Laramie 2, Livingston i, Denver i, Green River 2, Eocene 

 2, Miocene i, Pleistocene 2, Atane 2, Greenland Tertiary 5. 



Andromeda Parlatorii Heer. PL 50. f. i-^. 



Andromeda Parlatorii Heer, Phyll. Cret. Nebr. 18. //. /. 

 /. 5. 1866. Lesq. Cret. Flora, 88. //. 23. f. (5, 7; //. 

 28. f. /J. 1874; Fl. Dak. Group, 115. -pL ig. f. i ; fl. 

 52./. 6. 1893. Newb. Fl. Amboy Clays, 120. pi. ji. 

 f. i-y; pi' 33' /• i, 2, 4,3. 1896. Heer, Fl. Foss. Arct. 

 ^: 112. pi. 32. /. 1,2. 1875; 6^: ']<^. pi. 21. /. ib^ii ; 

 pi. 42. /. 4c. 1882. Hollick, Bull. Torrey Club, 21 : 

 54. pi. 173- /• 2, 3. 1894; Ann. N. Y. Acad. Sci. 11: 

 420. pi. 37'/. 7. 1898. White, Am. Jour. Sci. IH. 39 : 

 97. pi. 2./. 4. 1890. 

 Prunus ? Parlatorii Lesq. Am. Jour. Sci. H. 46: 102. 



1868. 

 This species is recorded from the following localities : 

 Dakota Group: Kansas, Nebraska, and New Ulm, Minn. 

 Cretaceous: Sea Cliff, L. L, Tottenville, Staten Island 

 and Martha's Vineyard. Raritan : common at nearly every 

 locality opened. Greenland: Atane beds at Atanekerdluk, 

 Isunguak and Igdlokunguak. 



Newberry (/. c.) is inclined to doubt the reference of all 

 these leaves to Andromeda, pointing out that generic determi- 

 nations of most Ericaceous leaves are always doubtful. Heer 

 compares his Greenland specimens to Ettingshausen's Laurus 

 cretacea from Niederschona. In oury". 4 the finer reticula- 

 tion is very minute and five- or six-sided. 



MYRSINACEAE. 



Myrsine Linn. Sp. PL 196. 1753. 

 Fossil American species occur in the following formations : 

 Raritan 3, Island Raritan 3, Dakota 2, Green River i, Atane 

 I, Greenland Tertiary 2. 



