10 PROCEEDINGS OF THE NATIONAL MUSEUM vol.75 



Matted leaves that appear to represent the same species are present 

 in the roofing shales of the coal near the Falls of Tequendama. 



Order EBENALES 



Family SAPOTACEAE 

 Genus CHRYSOPHYLLUM Linnaeus 



CHRYSOPHYLLUM ROLLOTI, new species 



Plate 5, Figure 5 



Leaf elongate, ovate-lanceolate in outline, with a gradually nar- 

 rowed acuminate tip. Texture somewhat coriaceous. The entire 

 margins are somewhat irregular or undulate. Mid vein stout, prom- 

 inent. Secondaries thin, closely spaced, subparallel, and camptodrome; 

 they diverge from the midvein at wide angles and curve sharply 

 upward near the margins. Tertiaries obscure. Length (estimated) 

 about 14 centimeters. Maximum width about 5.25 centimeters. 



Although based upon incomplete material, the character of the 

 venation stamps it as a Chrysojjhyllum. It is very similar to Chrys- 

 ophyllumjicifolia Berry '^ of the lower Eocene (Wilcox) of southeastern 

 North America, and there are several recent species in northern South 

 America and the Antilles with very similar leaves. 



The genus is tropical and subtropical with about 60 existing species, 

 which are largely American, although the genus is sparingly repre- 

 sented in all the other tropics. Several fossil species have been 

 described. 



The present species comes from the older travertine at Leiva, 

 Department of Boyaca. 



Order RUBIALES 



Family RUBIACEAE 



Genus SABICEA Aublet 



SABICEA ASPERIFOLIA LANCEOLATA, new variety 



Plate 5, Figure 4 



After an extended comparison I have decided to describe this well- 

 marked leaf as a variety of the species of Sahicea described by 

 Engelhardt'* from the Tertiary at Buga in the Cauca Valley of 

 Colombia. 



Leaf lanceolate, widest at or slightly below the middle and tapering 

 equally to the acuminate tip and to the acute slightly decurrent 



" Berry, Edward W., U. S. Oeol. Survey, Prof. Paper 91, p. 335, pi. 100, flg. 7, 1916. 

 "Engelhardt, H., Abh. Senck. Naturf. Qesell.. vol. 19, p. 40, pi. 5. flg. 6; pi. 8, flg. 6, 1895. 



