PHYSICAL CONDITIONS AND A(iK INDICATED BY FLORA OF ALUM BLUFF FORMATION. 



51 



the Claiborne, Jackson. Vicksbiirg, or Cata- 

 houla. 



Occurrence: Alum BlufT formation, Alum 

 Bluff, Liberty Countv, Flu. (collected by E. W. 

 Berry). 



Collection: United States National Museum. 



Order THYMELEALES. 



Family LAURACE.ff: 



Genus NECTANDRA Roland. 



Nectandra apalachicolensis Berry, n. sp. 



Plate IX, figure 3. 



Leayes oblong-oyate in general outUne, 

 broadest near the middle and tapering to the 

 bluntly pointed apex and base. Length about 

 8 centimeters; maximum width, half\yay be- 

 tween the apex and the base, about 2.5 centi- 

 meters. Margins entire, eyenly curyed. Tex- 

 ture coriaceous. Midrib stout. Secondaries 

 about 10 subopposite pairs, diyerging from the 

 midrib at wide angles, about 60°, rather 

 straight in their coui-scs two-thirds . of the dis- 

 tance to the margins, where they purye abruptly 

 upward and form a succession of small camp- 

 todrome arches along the margins. Tertiaries 

 obsolete. 



The genus Nectantlra has about 70 existing 

 species confined to tropical and subtropical 

 America, several of which are practically iden- 

 tical with this Alum Bluff species. There are 

 numerous fossil species, the genus being well 

 represented throughout the Eocene of south- 

 eastern North America, especially in the sedi- 

 ments of the Wilcox group, from which at least 

 fiye species are knowm. It is represented in the 

 Claiborne and Jackson but has not yet been 

 found iii the Vicksburg or Catahoula. The 

 present species is not particuhu'ly close to any 

 of the described fossil forms. 



Occurrence: Alum Bluff formation, Alum 

 Bluff, Liberty County, Fla. (collected by E. W. 

 Berry). 



Collection: United States National Museum. 



Genus CINNAMOMUM Blume. 

 Cinnatnomum scheuchzeri Heer. 



Plate X, figure -I. 



Cinnamomvm scheuchzeri. Heer, Flora tertiaria Helvetise, 

 vol. 2, p. 85, pi. 91, figs. 4-22; pi. 92; pi. 93, figs. 1, 5, 

 1856. 



This species was described by Alexan,der Braun 

 from both calyx and leayes, obtained in the 

 Tortonian of Oenmgen, Baden. Typical ma- 



terial is common in the type area in both the 

 Aquitanian and the Btu-digalian. Only the 

 original tlescription of Heer, which is accom- 

 panied ])y ample figures, is cited aboye, for 

 sanguine students haye fancied that they had 

 found this species at all horizons from the Up- 

 per Cretaceous to the Pliocene, and at a very 

 large number of localities throughout the 

 Northern Hemisphere. Some of these identi- 

 fications are undoubtedly correct, and the 

 species certainly had a wide geographic and 

 geologic range. Other identifications are un- 

 questiona])ly erroneous, but it is impossible to 

 sift the good from the bad without access to 

 the original material, and I haye therefore not 

 attempted to giye the synonymy or range. 



The Alum Bluff material appears to be iden- 

 tical with a part of Heer's material from the 

 type area, and it is also of the same age, so 

 that I have no hesitation in identifying it with 

 Heer's species. It denotes an ovate-lanceolate 

 leaf, rather abruptly pointed at the extremi- 

 ties, the base bemg broader than the apex. 

 Length about 8 centimeters; maximuni width, 

 in the middle part t)f the leaf, 2.7 centimeters. 

 Margins entire. Texture coriaceous. Midrib 

 stout; Lateral primaries one on each side, sub- 

 opposite, suprabasilar, camptodrome. Second- 

 aries thin, three or four camptodrome pairs in 

 upper half of the leaf. 



Occurrence; Alum Bluff formation, Alum 

 Bluff, Liberty County, Fla. (collected byE. W. 

 Berry) . 



Collection; United States National Museum. 



ft 



Order EBENALES. 



Family SAPOTACE.a:. 



Genus BUMELIA Swartz. 



Bumelia apalachicolensis Berry, n. sp. 



Plate IX, figure 4. 



Leaves oblong-obovate in genert^l outlme, 

 with an evenly roruuled apex and a narrowed 

 cuneate base. Length about 4 centimeters; 

 maximum width, above the middle of the leaf, 

 about 1.9 centimeters. Margins entire, rather 

 full. Texture coriaceous. Petiole short and 

 stout, about 2.5 millimeters in length. Midrib 

 stout, especially proximad, curved. Seconda- 

 ries thin, numerous, 10 to 12 subopposite to 

 alternate pairs, subparallel, at approximately 

 regular intervals; they diverge from the mid- 

 rib at angles of about 40° and are camptodrome 



