SAPINDAi^ES. i8i 



other known form. It seems to be a somewhat older type, since 

 it has been recognized in the considerably older deposits of the 

 Patapsco formation in Virginia. It would be interesting to 

 know from what horizon or horizons in the Raritan it had been 

 collected, but Prof. Newberry failed to indicate the locaHty in 

 connection with any of his several specimens, and it has not 

 been collected since his day. 



Occurrence. — LocaHty unl<nown. 



Collections. — N. Y. Botanical Garden. 



Family ACERACE^. 



Genus ACER Linne. 



(Sp. PL, 1753. P- 1055.) 

 Acer amboyense Newb. 



Acer amboyense Newb., Fl. Amboy Clays, 106, pi. 46, f. 5-8, 



1896. 

 Acer sp., Hollick, Mon. U S. Geol. Surv., vol. 50:89, pi. 33, 



f. 12, 13, 1907. 



Description. — Leaves unknown. Species based on fruits 

 (samara) which resemble greatly those of the modern red maple 

 of this latitude. They are somewhat variable in appearance, in 

 the size of the carpel and in the outline of the wing, but these 

 are interpreted as examples of variability - such as may readily 

 be seen in examining a series of fruits O'f the modern species. 



The carpel proper varies in diameter from 3 mm. by 2 mm., to 

 7 mmi by 3 mm., the latter probably being nearer the normal 

 form. The wing varies in length from i cm. to 1.7 cm., probably 

 averaging about 1.5 cm. and in breadth from 5 mm. to^ 9 mm. 

 The lower margin is thickened and curved (straight in one 

 specimen) with the characteristic parallel, curving, occasionally 

 forked veins. 



Although these remains are fairly common and seem clearly 

 allied to Acer, no leaves of this genus have been discovered in 



