150 THE FLORA OF THE DAKOTA GKOIJP. 



LEGUMINOSITES DAKOTKNSIS. SJ). 00%'. 



PI, XXXVIII, Fig. 5. 



Leaflets oval-oblonsr, rounded to the l^ase, constricted above into a 

 short, pointed acumen (broken); median nerve strong; secondaries oblique, 

 ahernate, equidistant, parallel, camptodrome. 



The leaflet is 4.5*^'" long- and 2.5""' broad a little above the middle, its 

 broadest part. It has six pairs of thin secondaries which are nearly straight 

 in traversing the blade and diverge at an angle of 40°, curving and anas- 

 tomosing in simple bows near the borders. 



The leaflet, bv its size, form, and nervation, is related to species of 

 Cassia and other Leguminosse described from the' European Tertiary, such 

 as C. Berenices Heer or C. Fischeri Heer.' Leaves of this type are described 

 by Ettingshansen (Kreideflora von Niederschoena) as Palseocassia. From 

 the Cretaceous flora of Greenland, Heer has described eleven Leguminosites, 

 besides nine leaflets referred to the genera Cassia, Dalbergia, and Colutea. 



Habitat: Ellsworth County, Kansas. No. 552 of the museum of the 

 University of Kansas; E. P. West, collector. 



Leguminosites truncatus, sp. nov.* 

 PL XXI, Fig. 7. 



Leaflet membranous, linear, obtuse, emarginate, by inflexion of the 

 border at the apex of the thick, percurrent median nerve; secondaries 

 oblique, close, parallel, curving in passing to the borders, camptodrome, 

 nervilles strong. 



This fragment of a. leaflet has a broad, flat, median nerve, preserving 

 the same thickness for its whole length. The lateral nervation has some 

 analogy to that of species of Podogonium, especially of P. LijrUlmuim Heer,^ 

 which represents a leaflet broadly emarginate at the apex. The secondaries 

 are, however, more curved, and ascend higher along the borders. 



Habitat: Ten miles northeast of Delphos, Kansas. No. 4075 of the col- 

 lection of Mr R. D. Lacoe. 



' Fl. Tcit. Helv., vol. 3, p. 123, PI. cxxxvii, Figs. 42-4fi, 62-65. 



"This species was called "Leguminosites emaryiiia'm, sp. nov.," in the uiauuscript by Prof. Les- 

 quereux, but tbis name i.s preoccupiod by Heel's Legiimiiiosites eniaryiiiiifiis ( Fl. Tert Helv., vol. 3, IS.'iy, 

 p. 125, PI. CXL, Fig. 3:5). I have therefore changed it to L. Iniiicatua. — F. H. K. 



'Fl. Tert. Helv., vol. :J, p. 117, PI. cxxxvi, Fig. 42. 



