KOSALES. 



233 



bods of Wilcox age) : Puryoar, Henry Couuty, 

 Tenii. (collected liy E. W. Berry), U miles west 

 of Grand .Iiiiution in Fayette County, Tenu. 

 (collected ])y E. \V. Berry), and WiclvIifVc, Bal- 

 lard County, Ky. (collected by L. C. Glenn). 

 Collections. — U. S. National Museum. 



Cassia emargixata Berry, n. sp. 

 Plates XLV, figure 17b, and XI. \ 111, figure .5. 



DiRcriptlon. — Lt^aflets of medium size, 

 slightly inequilateral, ovate in general outline, 

 with a broadly rounded or narrowed, <Muargi- 

 nat(> apex, and a narrowetl and rounded or 

 broadly cimeate base. Lengtii about 4.7 to 

 5.5 centimeters. Maximum width, in the 

 middle part <tf the leaflet, 1.5 to 2.75 centi- 

 meters. Margins entire, slightly irregular. 

 Leaf substance thin. Petiolule long and stout, 

 about 7 millimeters in lengtli. Midrib stout. 

 Secondaries very thin, 10 to 12 opposite to 

 alternate, irregularly spaced pairs; they diverge 

 from the midrib at wide angles, curving up- 

 ward in varying arcs, and are regularly camp- 

 todrome in the marginal region. Tertiaries 

 fine, but distinct, forming large, irregularly 

 quadrangular meshes. 



This fuie species closely resembles some of the 

 leaflets of Cassia glcnni Berry and Cassia^ wil- 

 coxlana Berry in size, outline, texture, and 

 venation. It is especially close to some of the 

 emarginate leaflets of Cassia glcnni, })ut may 

 be readily distinguished from both species, 

 which are practically sessile, by its relatively 

 long petiolule. 



Occurrence. — Holly Springs sand, Holly 

 Springs, Marshall County, Miss, (collected l)y 

 E. W. Berry). Lagi-ange fonnation (in beds of 

 Wilcox age), li miles west of Grand Junction, 

 in Fayette County, Tenn. (collected by L. C. 

 Glenn). 



Collections. — U. S. National Museum. 



Cassia glenni Berry, n. sp. 



Plates XLV, figures 15, 16, 17a, 18, and LII, figure G. 



Andromeda vaccinifolix affinis. Lesquereux, Am. Jour. 

 Sci., 2d ser., vol. 27, p. 364, 1859. 

 Lesquereux, in Safford, J. M., Geology of Tennessee, 



p. 428, pi. K, figa. 4a, 4b, 1869. 

 Loughridge, Report on the geological and economic 

 fealure.s of the Jackson's purchase region, p. 196, 

 figs. 4a. 4b. 1888. 



Description. — Leaflets different in size and 

 outline, ovate-lanceolate to elliptical-lanceolate, 

 with a cuneatc base and an equally and legu- 



larly narrowed, bluntly pointed apex; or the 

 distal part of the leaflet may be gi'adually 

 narrowed and more or less extended and tlie 

 tip narrowly rounded: or the tip nuiy be aiul 

 conunonly is ennirginate. Length ranges from 

 ;^.75 to 6 centimeters, averaging about 4.75 

 centimetcis. ifjixinuun widtli, at or generally 

 Ix'low tiie middle, ranges from 1.75 to 2.5 

 centimeters, averaging al)out 1.95 centimeters. 

 Petiolule short, not over 1.5 millimeters in 

 length, so that leaflets are ]iraotically sessile. 

 Leaf substance thin and niendiranaccous. 

 Blade slightly inequilateral. Margins nor- 

 nuilly full and entire, al)normally imdulate 

 like one specimen figured. Midril) relatively 

 stout and prouiinent. Secondaries tliin, si.\ or 

 seven subopiiositc to alternate pairs, branching 

 from the midrib at angles of more tlum 45°, 

 pursuing a rather straight course, at length 

 upward and cam])todromc. 



This species is very comnu)n at tlie locality 

 discovered halfway between Grand Junction 

 and La Grange, Tenn. The species is named 

 for Prof. L. C. Glenn, of Vanderbilt University, 

 who collected the type material in ino.i. It is 

 quite variable and the figured material illus- 

 trates this variability, which, however, is not 

 at all confusing, since the narrow rounded or 

 more or less emarginate tip and th(^ thin stiff 

 texture, together with the sharply impressed 

 but very fine tertiary venation, only visible 

 with a lens, give the leaflets a perfectly char- 

 acteristic appearance. 



It may b(> matched l)y a number of tlu^ abun- 

 dant <'xistiug species of Cassia from the ^\jneri- 

 can tropics. Among fossil forms it shows great 

 similarity to c<'rtain European Tertiary species, 

 especially to the al)undant and widespread 

 Cassia herenices Unger ' and Cassia hyperborea 

 Unger,- both so common in the 01igocen<' of 

 southern EiU'ope. Some of th<' forms of tliese 

 species, especially the suite of Cassia herenices 

 figured by Heer ^ from the Swiss Miocene, only 

 lack the slight emargination of the tip to be 

 identi(^al with Cassia glenni in all its variations. 

 It also suggests a form from tlie Tertiary of 

 Bolivia described by Engelliardt ' as Sweetia 

 tertiaria CMunosaceie) , but is larger and not 

 generically identical. 



■ Uii;;iT, Franz, Die fo.isile Flora von Sotzka, p. oS, pi. 43, figs. 4-10, 1850. 

 -Idem, pi. 4:J, fif^s. 1-3. 



2 TIcer, Oswald , Flora tertiaria Helvetian, vol. :i, pi. 137, flgs. 42-50, 1S59. 

 < Kn^'elharill, Hermann, Xaturwiss. Gesell. Isis in Dresden .\bh., IS.S7, 

 p. .■)8, pi. I, rif.'. 11; idem, 1,S94, p. 9, pi. 1, fig. 20. 



