140 



MESOZOIC FLORAS OF UNITED STATES. 



Jur 



CONCLUSIONS. 



The following is the complete list of the plants found in the Oregon 

 assic : 



10. 



11. 

 12. 

 13. 

 14. 

 15. 

 16. 

 17. 

 18. 

 19. 

 20. 



21. 



24. 



25. 

 26. 



28. 



Alarchantites erectus (Bean) Sew.1 

 Dicksonia oregonensis Font. n. sp. 

 Coniopteris hymenophylloides 



(Brongn.) Sew. ? 

 Thyrsopteris Murraj^ana (Brongn.) 



Heer. 

 PolyiJodium oregonense Font. n. sp. 

 Cladophlebis vaccensis Ward n. sp. 

 Cladophlebis denticulata (Brongn.) 



Nath. non Font. 

 Cladophlebis haiburnensis (L. & H.) 



Brongn. ? 

 Cladophlebis acutiloba (Heer) Font. 



n. comb. 

 Cladophlebis pecojateroides Font. n. 



sp. 

 Scleropteris oregonensis Font. n. sp. 

 Ruffordia Goepperti (Dunk.) Sew. 

 Adiantites Nympharum Heer? 

 Tseniopteris orovillensis Font. 

 Tseniopteris major L. & H. 

 Tseniopteris vittata Brongn. 

 Tseniopteris ? oregonensis Font. n. sp. 

 Macrotaeniopteris californica Font. 

 Sagenopteris Gceppertiana Zigij. 

 Sagenopteris pauci folia (Phill.) 



Ward n. comb. 

 Sagenopteris grandifolia Font. n. sp. 

 Danffiopsis Storrsii Font. n. sp. 

 Ecjuisetum sp. Font. 

 Pt^lozamites Leckenbyi (Bean) 



Nath. 

 Nilsonia orientalis Heer. 

 Nilsonia orientalis minor Font. n. 



var. 

 Nilsonia parvula (Heer) Font. n. 



comb. 

 Nilsonia nipponensis Yok. 



29. Nilsonia compta (Phill.) Gopp. 



30. Nilsonia pterophjdloides Nath. non 



Yok. 



31. Pierophyllum Nathorsti Schenk. 



32. Pterophyllum contiguum Schenk. 



33. Pterophyllum £ec|uale (Brongn.) 



Nath. 



34. Pterophyllum rajmahalense Morr. 



35. Pterophyllum minus Brongn. ? 



36. Ctenophjdlum angustifolium Font. 



37. Ctenophyllum pachj-nerve Font. n. 



sp. 



38. Ctenophyhum Wardii Font. 



39. Podozamites pulchellus Heer. 



40. Podozamites pachyphyllus Font. n. 



sp. 



41. Podozamites lanceolatus (L. & H.) 



Fr. Br. non Emm. 



42. Podozamites lanceolatus minor 



(Schenk) Heer. 



43. Podozamites lanceolatus latifolius 



(Fr. Br.) Heer. 



44. Podozamites ? pachjaiervis Font. n. 



sp. 



45. Ctenis sulcicaulis (Phill.) Ward n. 



comb. 



46. Ctenis orovillensis Font. 



47. Ctenis grandifolia Font. 



48. Ctenis auriculata Font. ? 



49. Encephalartopsis ? oregonensis Font. 



n. sp. 



50. Cycadeospermum oregonense Font. 



n. sp. 



51. Cj^cadeospermum ovatum Font. n. 



sp. 



52. Williamsonia oregonensis Font. n. sp. 



53. Williamsonia ? sp. Font. Bract of 



Williamsonia ? No. 1. 



