178 



SHORTER CONTRIBUTIONS TO GENERAL GEOLOGY, 1921. 



Leaves small, thick, and entire, with stout 

 petioles and midrihs and obscure secondary 

 venation which is immersed in the thick lam- 

 ina. Length 2. .5 to .5 centimeters; width 0.9 

 to 1.3 centimeters. Venation, where visible, 

 showing numerous parallel, camptodrome, 

 relatively long and thin secondaries, which 

 branch from the midrib at acute angles. 

 Though the majority of these leaves are equally 

 acuminate at both ends, there is considerable 

 variation in this respect, aTid a well-marked 

 tendency is shown in many specimens that are 

 relatively broader, especially in the upper half, 

 toward an obtusely rounded apex, the termina- 

 tion of the midrib showing as a small mucronate 

 point. The base in these forms gradually nar- 

 rows to the stout petiole. The variations in 

 outline of this species are well shown in the 

 figures reproduced in Newberry's monograph. 



Typical leaves of this species are not un- 

 common at Arthurs Bluff, Tex. It was de- 

 scribed originally from specimens found in the 

 upper part of the Raritan formation of New 

 Jersey and has subsecjuently been recognized 

 in the Magothy, Black Creek, and Tuscaloosa 

 formations of the southeastern Atlantic Coastal 

 Plain and in the Bingen sand of Arkansas. 

 Somewhat similar obovate leaves of very 

 coriaceous texture, formerly confused with 

 this species, are somewhat younger and have 

 recently been transferred by me to the genus 

 Eupliorhioplujllum. 



It may well be questioned whether this and 

 the following species of Andromeda should be 

 referred to the Ericales. Certainly the present 

 form has numerous points of contact with the 

 leaves of Engeni't, w-hich has been positively 

 recognized in the lower Eocene floras of this 

 general region. 



Andromeda snowii Lesquereux. 



Andromeda snovni Lesquereux, U. S. Geol. Survey Mon. 

 17, p. 117, pi. 17, fig. IC. 1891 (1.S92]. 

 Berry, Torrey Bot. Club Hull., vol. 39, p. 405, 1912. 



Leaves small, entire, coriaceous, lanceolate, 

 broadest in the middle and equally acute at 

 both ends. Length 4.5 centimeters: maximum 

 width 1.. 5 centimeters. Midrib stout. Second- 

 aries oblique, regularly spaced, subparallel, 

 camptodrome. 



This species, of doubtful distinctness from 

 the preceding, was described origiiially from 

 material collected in the Dakota sandstone of 



Ellsworth County, Kans. It is represented 

 by a single specimen from Arthurs Bluff, Tex. 

 It resembles the lanceolate leaves of the pre- 

 ceding species but is broader, with less nimier- 

 ous and much less ascending secondaries. 



Order EBENALES. 



Family EBENACEAE. 



Genus DIOSPYROS Liang. 



Diospyros primaeva Heer. 



Plate XXXIX, figure 2. 



Diospyros primnera Heer, Phyllites cr^tac^es du Ne- 

 braska, p. 19, pi. I, figs. f). 7. 1866; Flora fossilia 

 arctica, vol. 0, Abt. 2, p. SO, pi. 18, fig. 11, 1882; 

 vol. 7, p. 31, pi. 51, figs. 5a, b, c, 1883. 



Englehardt, Naturwiss. Gesell. Isis in Dresden Abh. 

 7, .lahrg. 1891, p. 98. 1892. 



Lesquereux, The flora of the Dakota group, \). 109, 

 pi. 20, figs, 1-3, 1892. 



.Smith. On the geology of the Coastal Plain of .\labama, 

 p. 348. 1894. 



Newberry, The flora of the Amboy clays, p. 124, pi. 

 30, figs. 1-5, 1896. 



Knowlton, U. S, Geol, Survey Twenty-first Ann, 

 Kept., pt. 7. p, 317, pi, 39, fig, 3, 1901, 



Berry. Torrey Bot. Club Bull., vol. 32, pi. 2, 1905; 

 vol. 34. p. 204, 1907; vol. 38, p. 417, 1911; New 

 Jersey Geol. Survey Bull. 3, p. 211, pi. 29, fig. 1, 

 1911. 



HoUick, The Cretaceous flora of southern New York 

 and New England, p, 103, pi, 42. figs. 2, 11, 1906. 



Berry, Maryland Geol. Survey, Upper Cretaceous, 

 p. 894. pL 90, fig. 4. 1916; U. S. Geol. Survey Prof. 

 Paper 84, p, 61, pi. 11, fig. 3; pi. 14, figs. 12, 13, 

 1914; Torrey Bot. Club Bull., vol. 43, p. 303, 1916; 

 U, S, Geol, Survey Prof. Paper 112, p, 134, pi, 30, 

 fig, 3, 1919. 



■ Leaves oblong-ovate, variable according to 

 age, ranging from 3 to L5 centimeters in length 

 by 1.3 to 5 centimeters in greatest width, wliich 

 is in the middle part of the leaf. Apex acute 

 or obtuse. Base cuneate. Margins entire. 

 Petiole rather long and very stout. Mith-ib 

 also stout. Secondaries branching from the 

 midrib, generally at acute angles, subopposite 

 to alternate, parallel, camptodrome. Terti- 

 aries forming polygonal areoles, whose rela- 

 tive prominence is one of the features of this 

 species. 



This species, which is suggestive of the 

 modern fliospi/rof^ vinjiniana Linne, was de- 

 scril)ed by Heer from specimens collected in 

 the Uakdta sanilstone of Nebraska over haK 

 a century ago. It has proved to be a form of 

 very wide range, having !)een identified at both 

 the Atane and Patoot horizons in Greenland, 



