DESCRIPTION OF SPECIES. 97 



to the petiole; tripliuerved; lateral primary nerves supra basilar, eiiieroiiifi- 

 at an acute angle of divergence, ascending close and parallel to the Ijorders 

 and like the secondaries anastomosing in festoons and ascending higli up 

 along the borders; secondaries alternate, the lower one-sided from near the 

 primaries, the upper in four pairs, very distant, all connected by strong 

 nervilles at right angles to the median nerve. 



The only leaf I have seen of this species is the one figured. It is 

 13"'"' long, 3"™ broad below the middle, the base and apex being broken. 

 The texture is thick, the median nerve strong, the lateral primaries and 

 secondaries thin, and all of the same thickness. 



Species comparable to L. expansa Sap. & Mar. (Revision Fl. de Gelin- 

 den, p. 68, PI. xi. Figs. 1, 2), and to L. elatinervis Sap. & Mar. (ibid., p. 70, 

 PI. XI, Fig. 4), and also, but in less degree of likeness, to L. laurinoides 

 Hosius and v. d. Marck (Fl. Westfal. Kreidef , p. 65, PI. xl, Fig. 157). 



Habitat: Ten miles northeast of Delphos, Kansas. No. 4014 of the 

 collection of Mr. R. D. Lacoe. 



LiTSBA FALCIFOLIA, sp. nov. 



PI. XI, Fig. 5. 



Leaves small, entire, coriaceous, lanceolate-acuminate, curved to one 

 side, granulose on the surface, tripliuerved from above the base; median 

 nerve thin, lateral primaries very oblique, ascending high, nearly parallel to 

 the borders, simple and very thin; secondaries, two pairs, far distant from 

 the jirimaries, all simple and parallel, the lower opposite, the upper one-sided. 



This leaf I'esembles somewhat the one described as C'nuKimomnm SrhcitcJi- 

 zeri Heer (Lesquereux, Cret. Fl., p. 83, PI. xxx. Fig. 2), ditferiug-, how- 

 ever, greatly by its falcate form and its veiy thin, simple nerves, not only 

 from the last species but from all those attributed to the genus Cinnamomum. 

 The nervation has more analogy to that of the living L. f/Jaiiro Siel)old of 

 Japan, though the aflfiuity is not complete. But the leaves from the Dakota 

 Group rarely show a perfect accordance of characters with those of the 

 present time. It is especially the case with the Laurinese, to which a nmn- 

 ber of leaves from the Dakota Group are refei'able, but whose generic rela- 

 tion remains as yet unsettled. 



Habitat: Ten miles northeast of Delphos, Kansas. No. 4205 of the 

 collection of Mr. R. D. Lacoe. 

 MON xvn 7 



