-ROSALES. 



2-15 



flat, about 6 inillimotcrs in lon<jth. 'Nfidril) 

 stout, as a I'ulc sliglitly curved, proiuinent on 

 the lower surface of (he lealh't. S(>coti(h(ries 

 thin, largely iiuniei'sed in the leaf substance; 

 about seven opposite to alternate, regularly 

 spaced pail's diverge fi-oni the midrib at angles 

 of 1.")° to .")()°, cui'ving slightly in their ascending 

 subparallel courses, eventually caniptotiroine. 

 Tcrliaries obsolete. 



Among the numerous Wilcox species of 

 Sophora this sp'ecies greatly resembles the 

 medium-sized leaflets of Sophora vilcofiona 

 Berry, the specific differences Ix^ing the n^la- 

 tively long, flat ])etiolul(\, Sophora wilcoriana 

 having practicaUy sessile leaflets, and the 

 extended bristle-like mucro of the tip. It is 

 possible that some of tiio leaflets referred to 

 Sophora. vMcoxvina are leaflets (if Sojihora 

 mucroiiata from which the nuicro and tiio petio- 

 lule have beiMi broken ofl', since tiic outline and 

 venation of the two species are practically iden- 

 tical. There is no danger of confusing the 

 j)resent species with any of the other Wflcox 

 species. Among recent forms of Sophora, 

 species with foliage like that of Sophora mucro- 

 nata are not uncommoti in the American tropi- 

 cal and subtropical zones. Among foreign Ter- 

 tiary species attention should be called to the 

 resemblance between this species and one from 

 Sagor in Carniola described by Ettingshausen ' 

 as Styphnolohium fnropxum,} 



Occurrence. — Lagrange formation (in beds of 

 Wilco.x age), Puryear, Henry County, Tenn. 

 (coUectcd by E. w". Berry). 



Collection. — U. S. National Museum. 



Genus DALBERGIA Linne flis. 



Dalbergia eocenica Berry, n. sp. 



Plate LIII, figures 1 and 2. 



Descnption. — Leaflets oblong <>i' obovate in 

 general outline, sessile. Apt^x emarginate. 

 Margins more or less jiaraUel, entire, curving 

 inward to form the broadly ])ointed base. 

 Length, 2.2 centimeters. Maximum width, 8 

 or niLUimeters, extending over (he upper half 

 or two-(hii(ls (if (lie leaflet. Midrib very stout 

 and pniniinent on the lower surface of the 

 lealle( , straight or somewhat curv(!d. Seconda- 

 ries thin but distmct, cspeciafly on the lower 



1 Ettingshausen, C. von, Die fossile Flora von Sngor in Kraiii. pt. 2, 

 p. 49, pi. 19, figs. 9-11, 1877. 



2 Engler and Prantl treat the genus Styplinolobium Schott as a syno- 

 nym of Sophora. 



surface of the leaflet, six or seven pairs, branch- 

 ing a( an acute angle (30° or less), cainpto- 

 droine or more or less obsolete by anastomosing 

 to form (lie tertiary marginal areolation. The 

 (extiH'e is coriac(H)Us and the venation is en- 

 tirely obsolete, except for the well-marked niid- 

 I'ib, on im]iressions showing the upper surface 

 of the leaflet. Tiie distal ears are symmetrically 

 rduiided and directed upward, and the leaflet 

 is as broad at this height as it is hiwer down. 



The modern species of UtdbtTgia numl)cr 

 about eighty, disti-ibuted (hroughout the ori- 

 ental and occidental tropics, and there is a 

 strong generic similarity in their foliage, a 

 number being practically identical with this 

 Wilco.x species. It is also very similar to a 

 number of previously described fossil species, 

 for example, Dalberyia hdla Ileer,' Dalbergia 

 (ijfiiiis Sajjorta,' Dalhergia retusiefolia Heer,^ and 

 Dalbergia euiuifolid Heer." These and nu- 

 merous other species range fi-om tlie up])er 

 Eocene into tlu^ Pliocene of Europe. Although 

 several Upper Cretaceous species are described 

 from North America the Tertiary occurrences 

 are few. Lescjuereux ' htis identified Dalbergia 

 cuneifolia Heer from the Miocene of Colorado, 

 ami I have recorded Dalbergia calvertensis 

 Berry from the Miocene of Virginia. Perhaps 

 the most similar species to the present form is 

 the widespread Dalbergia hella Heer, which 

 differs in being petiolulate, whereas Dalbergia 

 eocenica is sessile and has more nearly parallel 

 margins. Dalbergia bella is represented in the 

 late Eocene flora of Greenland. 



Among unrelated existuig genera the com- 

 mon coastal species Reynosia septentrionalis 

 Urban (Rhamnaceas) of the West Indies has 

 small, coriaceous, emarginate leaves that are 

 identical with those of Dalbergia eocenica in 

 outline, differing merely in their venation, 

 Reynosia having regularly spaced, canipto- 

 drome secondaries, diverghig at an invariably 

 wide angle of more than 90°. 



Another simUar, somewhat larger form is 

 described by Friedrich as Dalbergia oligocsenica.^ 



3 Heer, Oswald, Flora t<!rliaria Helvetia^, vol. 3, p. 104, pi. 13.3, figs. 

 1 1-19, 1S.59. 



' Saporta, 0. de, Derni^res adjonctioiLs ii la flnre fossile d'ALx-en- Pro- 

 vence, pt. 2, pi. I, fig. 12, 1S,S9. 



■■> Ueer, Oswald, op. cit., pi. 133, figs. 9-11. 



« Idem, pi. 133, (ig. 20. 



' Le.squcreu.x, I^co, The Cretaceous and Terti;iry floras, p. 200, pi. 34, 

 figs. 6, 7, 1883. 



8 Friedrich, Paul, K. preuss. geol. Landesanstalt .\bh. Geol. Special- 

 karte, l'reu.ssen und don Tliuringischen Staaten, vol. 4, p. 231, pi. 29, 

 figs. 17-19, 1883. 



