EBEXALES. 



335 



of Europe have been referred directly to the 

 genus Sideroxylon. Of these the Wilcox 

 species is murli hl^e Sideroxylon puUcrliM 

 I'ngor ' in everything except size, I'nger's 

 species being about one-half the size of the 

 Wilcox form. 



Occurrence. — Lagrange formation (in Ixuls of 

 Wilcox age), Puryoar, Henry County, Tenn. 

 (collected by E. W. Bcn-y). 



Collection. — U. S. National ]\rus(Miin. 



Sideroxylon premastriiodkndron Jierry, 

 n. syi. 



Plato XCIX, ri<rure4. 



DescHpiion. — Leaves medium sized, elon- 

 gate-elliptical in general outline. Apex vari- 

 able, in most specimens broadly rounded. 

 Base rounded or broadly cuneate. Length 

 about 9 to 10 centimeters. Maximum width, 

 wliich is generally just below the middle, about 

 3.3 centimeters. Margins entii-e, slightly undu- 

 late. Leaf substance thick and coriaceous in 

 texture. Petiole short and stout, enlarging 

 proximad, about 1 centimeter in length. Mid- 

 rib stout, prominent on the lower surface of the 

 leaf. Secondaries rather stout, seven or eight 

 alternate or subopposite irregularly spaced 

 pairs; they diverge from the midrib at angles 

 ranging from 30° to 50° and are 1nit slightly 

 curved for tliree-fourths of the distance to the 

 margin, where they curve abruptly upward to 

 form broad camptodrome arches. Tertiaries 

 consist of a few rather stouter liranches from 

 the midrib, subparallel with two successive 

 secondaries where these are widely spaced, of 

 camptodrome marginal arches, and of more or 

 less percurrent internal nervilles. Areolation 

 fine, composed of transversely elongated meshes 

 of small size. 



This species is smaller and much less robust 

 than the associated Sideroxylon elUpticus Berry, 

 which it resembles closely in a general way. 

 The secondaries are less numerous and more 

 ascending and curved, and the areolation is 

 finer. It is much like numerous existing 

 species of Sideroxylon and except for its shorter 

 petiole is practically identical with the leaves of 

 Sideroxylon nuistichodendron Juccjuin, a tree of 

 the Florida Keys, the Bahamas, and many of 

 the Antilles. 



I Unger, Franz, Die fossile Flora vonKumi, p. n, pi. II, figs. 1— J, lS(i7. 



Occvrrenee. — Lagrange formation (in beds of 

 Wilcox age), Purvear, Henry County, Tenn. 

 (coUected by E. W. Berry). 



Collection. — U. S. NatioiuJ Museum. 



Genus CHRYSOPHYLLUM Linno. 



Chrysophylluai FiciFOLiA Berry, n. sp. 



Plate (', fi,<,'ure 7. 



Description. — Letives relatively large, oblong 

 or ovate-lanceolate in outline, the apex and 

 base pointed. Length about 15 centimeters. 

 Maximum width, near the midcUe of the leaf, 

 about 5.5 centimeters. Margins entire in some 

 specimens, slightly repand distad. Texture 

 very coriaceous. Petiole short and stout. 

 Midrib very stout, curved, prominent on the 

 lower surface of the leaf. Secondaries very 

 thin and close set, diverging from the midrib at 

 angles of more than 45°, curving upward, sub- 

 par^dlel, camptodrome. 



Several modern genera have been compareil 

 with this fossil species. Among those that show 

 more or less resemblance may be mentioned 

 Brosimum Swartz of the American tropical 

 Moraceie, Ardisia and Icacorea of the Bombaca- 

 cese, and especiidly Ficus. This species may be 

 a Ficus, since it resembles more or less closely 

 several existing and fossil species which have 

 been referred to that extensive genus. The 

 venation, however, seems to me to indicate a 

 relationship with the genus ChrysophyUum, 

 which among its 50 or 60 existing species con- 

 tains several West Indian forms practically 

 identical with the fossil in all its features. 



The genus ChrysophyUum is tropical or sub- 

 tropical, most of the forms being American, 

 although it is found in tropical Africa, southern 

 Asia, Australia, and the Hawaiian Islands, and 

 is represented in all tropical countries by the 

 cultivated star apple, ChrysophyUum cainito 

 Linne, a native of the West Indies. The only 

 species of the genus that reaches the United 

 States is ChrysophyUum. oliviforme Lamarck of 

 the Bahamas and Antilles, which is rare along 

 the Florida coast northward to Moscjuito Inlet 

 on the east coast and to the vicinity of Pine 

 Island on the west coast. This species has 

 leaves much like the fossil but only about htdf 

 their size. Seven or- eight fossil forms have 

 been referred to this genus, all of which come 

 from the European Tertiary except one not 



