214 



LOWER EOLF.XK FLOIi.VS OF SOUTIIEAriTERN XOKTII AMERICA. 



Crctarcous of l)()tli Ainorica and Europo (Xorth 

 Carolina and Bohemia). In addition to the 

 species described below Pisonia claihornensis 

 Berry is found in the flora of th(> Claiborne 

 gixmp in Georgia and Louisiana, and Pisonia 

 jacJcsoniana occurs in deposits of Jackson age 

 in Arkansas. 



Occurrence. — Lagrange formation (in beds of 

 Wilcox age), Puryear, Henry County, Tcnn. 

 (collected by E. w". Berry). 



Collection. — U. S. National Museum. 



Pisonia chlorophylloides Berry, n. sp. 



Plates XXXVII, figure 1. and XLII. figure 1. 



Qiurcus chlorophylla. Lesquereux (in part, not Unger), 

 Am. Pldlos. See. Trans., vol. 13, p. 41G, pi. 17, fig. 7 

 (not figs. 5, 6), 1869. 



Description. — Leaves relatively large, obo- 

 vate in general outline, the apex rounded and 

 the base cuiieate and decurrent. Length about 

 6 centimeters. Maximum width, slightly above 

 the middle, about 2.8 centimeters. Median 

 lateral margins full and rounded. From the 

 region of maximum width the margins curve 

 inward rapidly distad to the broadly rounded 

 tip. They likewise curve mward proximad, 

 curving outward m the basal region to form 

 the decurrent base. Margijis entire, slightly 

 irregular. Texture coriaceous. Petiole miss- 

 ing in the type specimen, evidently short and 

 stout. Midrib very stout proximad, becom- 

 ing thin distad, curved, prominent on the lower 

 surface of the leaf. Secondaries thin, mostly 

 immersed h\ the leaf substances, six or seven 

 pairs, diverging from the midrib at angles of 

 about 50° to 55° and camptodrome in the mar- 

 ginal region. Tertiaries entirely obsolete. 



This species is much larger than the associ- 

 ated Wilcox species of Pisonia, which it resem- 

 bles in a general way. It approaches the Clai- 

 borne species Pisonia clmbornensis Berry ' but 

 is abundantly distinct. Among previously de- 

 scribed fossil spcf'ies it is most similar to Pisonia 

 eocenica Ettingshausen,- a common European 

 species that makes its appearance at the base 

 of the Oligocene. 



There are several existing American species 

 that are much liki' Pisonia chloroplnjlloixles, the 

 most similar being probably Pisonia aculeata 

 Linne, the type of the genus. 



' Berry, E. W., V. S. Geol. Survey Prot. Paper 84, p. 140, pi. 28, fig.3, 

 1914. 



- Etting.shausen, C. vou, I'io tertiiiro Flora voii Ilitriug in Tirol, p. -i'-i, 

 pi. 11. IIl's. 1-22, lK.>i. 



Occurrence. — Ackerman formation. Hurleys, 

 Benton Comity (formerly ]>art of Tippah 

 County), Miss, (collected by E. W. Hilgard). 



Collection. — University of Mississippi. 



Pisonia puryearensis Berry, n. sp. 



Plate XXXVIII, figure 7. 



Description. — Leaves small, elliptical in gen- 

 eral outline, the mai'gins slightly incurvcnl dis- 

 tad to form the narrowly rounded apex. Base 

 about equally rounded, but basal margins 

 evenly rounded and not incurved to match the 

 apex. Length about .3.2 centimeters. Maxi- 

 mum width, in the middle part of the leaf, 

 about 1.2 centimeters or slightly less. Margms 

 entire. Texture coriaceous but leaf .substance 

 not nearly as thick as in the precedmg species. 

 Petiole stout and curved, about 3 mOlimetei-s 

 in length. Midrib rather stout, much tliinner 

 than m Pisonia eoliiinitica Berry, slightlv 

 curved toward its tip. Secondaries thin, 

 mostly;' immersed, ascenduig, curved, campto- 

 di'ome. 



This species has thinner, petiolate, and more 

 elliptical leaves than Pisonia cliloroplnjlloidcs, 

 from which it is readily distinguishable. vSu- 

 perficially it approaches some of the leaflets of 

 the Cfesalpiniacefe and Mimosacea? of the Wil- 

 cox flora, as, for example, those of the genus 

 Cassia, which are, however, as a rule, thinner 

 and have short or no petiolules and different 

 venation. It is not unlike several existing 

 American species of Pisonia, with which com- 

 parisons have been made. A similar fossil form 

 from the Tertiary of Ecuador is referred to the 

 genus Vochysia Jussieu by Engelhardt ^ and 

 compared with the existing Brazilian Vochysia 

 ellipticei Martins. 



Occurrence. — Lagrange formation (m beds of 

 Wilcox age), Pury(>ar, Henry County, Tenn. 

 (collected by E. W. Berry). 



Collection. — U. S. National Museum. 



Order RAN ALES. 



Family MAGNOLIACEffl. 



Genus MAGNOLIA Linne. 



Magnolia angustifoeia Newberry. 



Magnolia altenuala. Lesquereux (not Weber), The Ter- 

 tiary flora, p. 250, pi. 45, fig. 6, 1878. 



Magnolia ang us tifolia. Newberry, U. S. Na(. Mu.s. Proc, 

 vol. 5, p. 513, 1882 (1883). 



' F.ngclharilt, Hermann, Sonokenborgisclio naUirf. GescU. Abli., vol. 

 19. p. 13, pi. 1, lig. 0, 1S95. 



