143 



Although there are no undescribed species, several have been but 

 recently discovered during tlie Pacific Railroad Exj)loring Expe- 

 ditions, and are described in the Government Reports of those 

 Expeditions. 



1. Tlialictnim dioicum, L. ? 



2. Ranunculus Californicus, Bentli. 



3. " repens, L. var. 



4. Aquilegia Canadensis, L. 



5. Delphinium nudicaule, Tovr. (.f Gr. 46 



6. Delphinium azureum, Mx. 47 



42. Vicia exigua, Nutt 



43. 



44. 



45. 



7. 



S. 



patens, Bentli. 

 simplex, Doug. var. 



" truncata, Nutt. 



" gigantea, Hook. 

 Lathyrus venosus, ^fuhl. 



" polymorphus, Nuit. 

 Psoralea physodes, Dourjl. 



48. " orbicularis, Lindl. 



49. Trifolium albopurpureum, Torr. 



# 



9 

 10 

 11 

 12 



strictum. Gr. 



Delphinium decorum, Flsch. tf Mey. 50. Trifolium ciliolatum, Benth. 



Eschscholtzia Californica, Cham. 

 Platystemon Californicum, Benth. 

 Nasturtium Ijn-atum, Xult. 



13. Turritis glabra, L. 



14. Cardamine paucisecta, Benth. 



15. " tenuisecta, Benth. 



16. Sisymbrium deflexum, Harvey f 



17. Tropidocarpum scabriusculum, 



Hook. 



18. Erysimum asperum, DC. 

 18 a. Erysimum elatum, Nutt. 



19. Lepidium nitidum, Nutt. 



20. Viola pedunculata, Torr. <^ Gr. 



21. " sarmentosa, Doug. 



22. " adunca, Sm. 



23. Silene Gallica, L. 



24. Alsine Douglasii, Fenzl. 



25. Sagine procumbens, L. 



26. Calandrinia Menziesii, Hook. 



27. Claytonia perfoliata, Don. 



28. Lewisia rediviva, Pursh. 



29. Sidalcea diploscypha, Gray. 



30. " malvseflora, Gray. 



31. " humilis, Gray. 



32. Linum Californicum, Benth. 



33. Geranium Carolinianum, L. 



34. Erodium macrophyllum, Hook. ^" 



Arn. 



35. Erodium cicutarium, VHer. 



36. Oxalis corniculata, L. 



37. " stricta, L. 



38. Limnanthes Douglasii, R. Br. 



39. Rhus Californica, Nutt. 



40. " diversiloba, Torr. cf Gr. 



41. Mesembryanthemum dimidiatum, 



Harvey. 



u 



51. " tridentatum, Lindl. 



52. " variegatum, Nutt. 



53. " fucatum, Lindl. 



54. Hosackia bicolor, Doug. <^ Benth. 



var. gracilis. 



55. Hosackia parviflora, Benth. 



56. " subpinnata, Torr. (f- Gr. 



57. " Pursliiana, Benth. 



58. " gracilis, Benth. 



59. Lupinus nanus, Dougl. 

 micranthus, Dougl. 

 densifiorus, Benth. 



" latifolius, Agardh. 



" ? 



Thermopsis fabacea, DC. var. 

 tomentosa. 



65. Nuttallia cerasiformis, Torr. ^' Gr. 



66. Acaena trifida, Ruiz 4' Rav. 



67. Potentilla anserina, L. 



68. " glandulosa, Lindl. 



69. Fragaria Chilensis, Ehi'h. 



70. Rubus vitifolius, Cliam. cf Schlecht. 



71. Crataegus sanguinea, Pallas, var. 



Douglassii, Torr. ^' Gr. 

 (Enotliera densi flora, Sm. 

 " dentata, Cav. 



" ovata, Nutt. 

 " cheiranthifolia, Hornem. 

 " Lindleyi, Dougl. 



60, 

 61, 

 62, 

 63 

 64, 



72. 

 73. 

 74. 

 75. 

 76. 

 77. 

 78. 

 79. 



purpurea, Curtis. 



" decurabens, Dougl. 

 Clarkia elegans, Lindl. 



80. Megarrhiza Californica, Torrey. 



81. Tillsea minima, Miers. 



82. Lithophragma parviflora, Nutt. 



