138 DESCRIPTION OF SPECIES. 



LASTR-2EA, Presl. 

 Lastrsea (Goniopteris) intermedia, Lesqx. 



"U. S. Geol. Rep.," vii, p. 50, pi. iv, fig. 14. 



PTERIS, Linn. 

 Pteris pseudo-peiina^foriuis, Lesqx. 



I bill., p. 52. pi. iv, figs. 3, 4. 



DIPLAZIUM, Swartz. 

 Diplaziuiu Muelleri, Heer. 



Ibid., p. 55, pi. iv, figs. 10, 10a. 



LYGODIUM, Sw. 



Lygodium neuropteroides, Lesqx. 

 Ibid., p. 01, pi. v, figs. 4-7; vi, fig. 1. 



Li y g o d i n in D e n t o n i , Lesqx. 

 Ibid., p. 6:1, pi. Ixv, figs. 12, 13. 



CONIFERS. 



PINUS, Linn. 



Pinus Florissanti, sp. nov. 



Plate XXI, Fig. 13. 



Strobile large, conical, 12 centimeters long or more, centimeters in diameter at 

 the broken base; scales large, 4| centimeters long, li broad; apophyses conical, trans- 

 versely rhoinboidal when flattened. 



This fine cone is related to Piyius ponderosa, Douglas, a fine species of 

 California and New Mexico, by the large size of the scales, not or scarcely 

 enlarged under the apophyses. 



Hab.— Florissant. U. S. Geol. Expl. Dr. F. V. Hayden. 



Pinus palseostrobus ?, Ett. 

 " U. S. Geol. Rep.," vii, p. 83, pi. vii, figs. 25, 31. 



SEQUOIA, Torr. 

 Sequoia angustifolia, Lesqx. 

 Ibid, p. 77, pi. vii, figs. 6-10. 



Sequoia Langsdoriii, Brgt. 



Ibid., p. 76. 



Sequoia Heerii, Lesqx. 



Ibid., p. 77, pi. vii, figs. 11-13. 



Sequoia afi'inis, Lesqx. 



Ibid., p. 75, pi. vii, figs. 3-5; lxv, figs. 1-4. 



