336 



LOWKK EOCENE FLOKAS OF SOUTllEASTEHX XOKTTI AMERICA. 



vory oonvincinsi form doscrilKvl by Engclhardt ' 

 from tho Cooomaiiiaii of Saxony. 



Occurrence. — Grenada formation, Grenada, 

 Grenada County, Miss, (collected by E. N. 

 Lowe and E. W. Berry). Lagi-ange formation 

 (in beds of Wilcox age), Piuson, Madison 

 Comity, Tenn. (collected by E. W. Berry). 



Colleclions. — U. S. National Museum. 



Genus BUMELIA Swartz. 



Leaves short and broad, retuse or emarginate: 

 Small, under 2 centimeters, slightly retuse. 



Buinelia psewlohorrida. 

 Over 2 centimeters, deeply emarginate: 



Obcordate, that is, with a narrowed base. 



Buvulia uilcoxiana. 

 Orbicular or elliptical, that is, with a broad base. 



Bumelia ainericana. 

 Large -svith coarse venation, that is, conspicuously 



retuse Bumelia hurleyensis. 



Leaves narrower, length more than twice the width, apex 

 rounded or slightly emaj-ginate: 

 Midrib slender, secondaries few and ascending. 



Bumelia pscudotenax. 



Midrib very stout, secondaries numerous and dii-ected 



laterally Bumelia grermdensis. 



Bumelia wiLCOXL'i.NA Berry, n. sp. 

 Plates C, figures 4 and 5, and CVII, figure 3. 



Description. — Leaves obcordate in outline, 

 the apex deeply emarginate and the base 

 broadly pointed and cuneate. Size somewhat 

 variable, the length ranging from 3 to 4 centi- 

 meters and the maximum width, widest above 

 the middle, from 2 to 3 centimeters. Margins 

 entire, full, and evenly rounded. Apical ears 

 broadly rounded, directed upward. Petiole 

 short and stout, 2 or 3 milliraeters in length. 

 Midrib stout and straight, prominent on the 

 lower surface of the leaves. Secondaries rela- 

 tively thin, prominent on tho lower surface of 

 the leaf, five to seven pairs, tending to be stib- 

 opposite, branching from the midrib at angles 

 of about 55° or somewhat less, curving upward, 

 camptodrome. Texture coriaceous. 



This species is not uncommon in the Wilcox. 

 It resembles in a general way some of tlie 

 European forms referred to the papilionaceous 

 genus Colutea, as, for example, Colutea mac- 

 rophylla Heer.^ It is close to certain existing 



1 Engelhardt, Hermann, Naturwiss. Gesell. Isis in Dresden Abh., 

 1891, Abh. 7, p. OS, pi. 2, flg. 1.5. 



!Ucer, Oswald. Flora Icrliaria llclvntia;, vol. 3, p. 102, pi. 132, figs. 

 43-49, 1859. 



and fossil species of Bumeha and probably 

 congeneric with them. Among these it is very 

 similar to some of the forms referred to the 

 widespread European Tertiary species Bumelia 

 oreadum. Unger, as, for example, the forms from 

 the Sannoisian of Aix in southeastern France 

 described by Saporta.^ It may also be com- 

 pared with Bumelia suhspathulata Saporta* 

 from the same locality and horizon. It is 

 very similar to and probably descended from 

 Sapotacites shirleyensis Berry,'' a common form 

 of the LTpjior Cretaceous Tuscaloosa formation 

 in western ^Vlaliama. The genus is abundantly 

 represented in the Tertiary of Europe, but in the 

 existing flora it is confined to America and 

 comprises about 20 species scattered from the 

 southern United States through the West 

 Indies and Central America to Brazil. It is 

 the only genus of this strictly tropical and sub- 

 tropical family which extends into the tem- 

 perate region of North America. 



Several recent species resemble this Eocene 

 form, and it may be matched almost com- 

 pletely by some of the leaves of the variable 

 Bumelia retusa Swartz of the West Indies. 



Occurrence. — Holly Springs sand, Early 

 Grove, Marshall County, Miss, (collected by 

 E. W. Berry). Lagrange formation (in beds of 

 Wilcox age), Puryear, Hem-y County, Term, 

 (collected by E. W. Berry). 



Collections. — U. S. National Museum. 



Bumelia pseudohorrida Berry, n. sp. 



Plate C, figure 1. 



Description. — Leaves small and nearly orbic- 

 ular in outline, many somewhat inequilateral, 

 the apex broadly rounded and shghtly retuse, 

 and the base rounded or broadly cuneate. 

 Length about 1.25 centimeters. Maximum 

 width about 1 centimeter or shghtly less. 

 Margins entu'e. Texture coriaceous. Petiole 

 short and stout, curved, about 2 millimeters in 

 length. Midrib stout. Secondaries immersed 

 in the leaf substance, about four pairs, diverg- 

 ing from the midrib at acute angles, ascending 

 approximately parallel with the lateral mar- 

 gins, eventually camptodrome. 



'Saporta, G. de, Demifires adjonctions k la flore fossile d'Aix-en- 

 Provence, pi. 2, pi. 9, flg. 14, 1S,S9. 

 I Idem, pi. 13, figs. 3, •). 

 5 Berry, E. W., unpublished MS. 



