118 THE FLORA OF THE DAKOTA GEOUP. 



and parallel, mucli curved in coming near the liorders, Avliich they follow in 

 simple areheis; intervals reticulate by thin nervilles. 



The specimens are mere fragments of leaves with the apex destroyed. 

 The form of the leaves and the nervation refer them evidently to some 

 species of Ericacejie, being especially in close relation to A. varcmifolia Ung.,' 

 for the size and form of the leaf (Fig. 5), and to A. protocfcea Ung., as figured 

 (loc. cit, PI. CI, Fig. 26d). The affinity to this last species, even by the 

 form of the leaf, is really very close, the difference being merely in tlie less 

 enlarged middle part of the Cretaceous leaves. In Figs. 17 and 18 of oiu- 

 Plate XVII the leaves are smaller, the secondaries are more distant, at a 

 more acute angle of divergence, and form longer bows nearer to the borders. 

 The fragments may represent a different species. Biit still more striking 

 variations in the angle of divergence of the secondaries, their distance and 

 their relative position along the border are often to be observed in leaves 

 of the same species of Andromeda. 



Habitat : Ellsworth County, Kansas. Nos. 548a and 689 of the museum 

 of the University of Kansas; E. P. West, collector. No. 4060, from ten 

 miles northeast of Delphos, Kansas, is of the collection of Mr. R. D. Lacoe. 



Andromeda affinis Lesq. 

 PI. XXXVIII, Fig. 11. 



Gret. and Tert. Fl., p. 60, PI. ii, Pig. 5. 



A leaf more fragmentary than that in Cret. and Tert. Fl. (loc. cit.), but 

 with the same characters. 



Andromeda linifolia, sp. nov. 

 PI. LII, Fig. 5. 



Leaf small, coriaceous, rigid, equally and gradually narrowed upward 

 to a long acumen, and decurring downward to a short, slender petiole; mid- 

 rib narrow; secondaries obsolete, oblique, Oj)posite or alternate, st)mewhat 

 curved and canq)todrome. 



The leaf is slender, 6*"" long, broken near the apex, scarcely 1°"' broad 

 below the middle, gradually narrowed upward and downward, apparently 

 rigid and solid; surface polished; secondaries parallel. 



None of the fossil species of this genus have leaves so rigid, so slender, 

 and so gradually and equally tapering both ways, or so exactlv lanceolate- 

 acuininate. In its general form and size the leaf is comparable to that of 



»Heer iu Fl. Tert. Holv., vol. 3, p. 7, PI. ci, Fig. a.'i. 



