38 DESCRIPTIONS OF FOSSIL PLANTS. 



No. 5. [2649.] 



Is in two fragments of a different leaf (figured, pi. ii, fig. 5/;, of Hall) 

 It has the pitted areolatiou like Dictyophyllum mentioned above. 



No. 6. [2650.] 



A small fragment of Dictyophyllum or Clathropteris. It has no secoucU 

 aries. but only large square areoles like Clathropteris. 



The specimen representing fig. 4, of PI. n. of Hall T is part of an ovatei 

 leaf, lanceolate pointed above and dentate on the borders, the second-1 

 aries entering the teeth. The figure is really that of a dicotyledonous 

 leaf, but the specimen is not in the lot ! 



What seems to me to be conclusive of the Oolithic age of the plants, 

 is the number of fragments of small ferns referable to the genus Tin 

 sopteris, of which Heer has described a number of species from the* 

 Jurassic in Jura Flora of Siberia, Pis. I, ii; also in Portugal flora, andi 

 which are also described as Hymenophyllites lechenbyi in Zigno, PI. ix.c 

 figs. 3-5, and PI. xi, figs. 1, 2. Plate i, fig. 4, of Hall, is like Cycadopterh 

 heterophylla Zigno, and fig. 3 of PI. n is like C. heerii Ziguo. Thos€> 

 small ferns mixed upon small specimens are really Oolithic type. 



No. 7. [2651.] Sphenopteris trifoliata Hall. Plate II, figs. 2, 2d. It is a Thyrsopteris,- 

 No. 8. [2652.] Thrysopteris, with rootlets of ferns, named by Hall Trichopterib 



gracilis. Plate i, fig. 5. 

 No. 9. [2653.] Fragment of Thrysopteris, named by Hall Sj)henoj)teris triloba. Pla^c i, 



fig. 8. 

 Nos. 10, 11. [2854.] Pecopteris undulata Hall. They are not Pecopteris : nervation 



obsolete. 

 No. 12. [2655.] Glossopteris phillipsii Hall. 

 No. 13. Fragment; racbis of fern. 

 No. 14. Fragment; probably like 4a. 



19. 

 " Fortieth parallel collection." Collector not known. 



Acu trilobatum Sternb. 



Eight specimens; Museum number, 2410. 



20. 



Miscellaneous localities. 



Ilex longifolia Heer. Cascades, Oregon. A. Haque, collector. 



One specimen ; Museum number, 24S4. 

 Cinnamonium affine Lx. Carbon Station, Wyoming. A. Haque, collector. 



One specimen ; Museum number, 2449. 

 Cissus lobato-crenato ? Lx. Carbon Station, Wyoming. A. Haque, collector. 



One specimen; Museum number, 2451. 

 Salix G-rcenlandica Heer. Carbon Station, Wyoming. A. Haque, collector. 



One specimen; Museum number, 2591. 

 Sequoia R3ica3uba3lii He^r. Rock Creek, Wyoming. Collector unknown. 



