174 THE FLORA OP THE DAKOTA GROUP. 



ill tlic upper pnrt, bciuti' In-oken lu'ar the base and partly eovered near the 

 roundtMl ai)ex. It lias six ])airs of secondaries at a ver}' acute an<^le of 

 diverf>-enc(i (10° to 15"), either straight or slig'htly curved in ascendinj!;-, 

 camptodroiiie, some of the secondaries being connected by a short branch 

 transversely anastomosing as seen in the secondary nervation of Crliistj-u.s 

 I'l/rrhce Ett./ the only leaf to which I am able to compare the Cretaceous 

 leaf. 



Habitat: Near Fort Marker, Kansas. No. 2S11 of the U. S. National 

 Museum. 



CELiSTROPHYLLUM MYRSINOIDES, Sp. nOV. 



PI. LVII, Figs. 8, 9. 



Leaves subcoriaceous, lanceolate, entire or obtusely serrulate near tlie 

 apex, narrowed to the base and decnrring to a short enlarged petiole; second- 

 aries numerous, caniptodrome, parallel, at an acute angle of divergence. 



These leaves vary from 4™ to G""" in length, l"" to 1.5''"' broad in the 

 widest part above the middle, have seven to eight pairs of secondaries, the 

 lowest diverging from the midrib at an angle of 25° to 30°, the upj)er 

 gradually less oblique; the surface is somewhat undulate by the impression 

 of the secondaries, but the borders are apparently entire. 



In general form and nervation the leaves are closely related to those 

 figm-ed and <lescribed by Heer as Mi/rsine salicoides Al. Br., in his Fl. Tert. 

 Helv. (vol. 3, p. 17, PI. cm, Figs. 16-16b), but differ in the entire borders, 

 and in having a broader, shorter petiole bordered by the base of the decur- 

 rent leaves. Of the two leaves communicated by Prof. Al. Braun, as species 

 of Myrica, Heer remarks that the distribution of the secondaries prevents 

 their reference to the genus. They have, indeed, by all their characters a 

 more marked degree of relation with some species of Celastrus, such as 

 C. Acherontis Ett.,- described Ijy Heer (loc. cit.), PI. cxxi, Figs. 51, 52. 

 The Dakota Group leaves are most like those figured in the Bilin Flora. 



Habitat: Kansas. 



Celasteophyllum crassipes, sp. nov. 

 PI. LVII, Figs. 6, 7. 



Leaves small, broadly oval or suborbicular, entire, short petioled; mid- 

 rib stout; secondaries parallel, curved and caniptodrome. 



Two leaves of this species, one 4"'" the other 2.5*"" in size both ways, 



I Flora V. Bilin, pt. 3, p. 33, PI. XLVIU, Fig. 21. "Ibid., Fig. 9. 



