92 



KEY TO THE SPECIES 



Mallow Family, 48. 

 Malva, 49. 

 Malvaoese, 48. 

 Malvastrum, 49. 

 Maple, 47. 

 Maple ramily, 47. 

 Mariposa Lily, 10. 

 Marsh Marigold, 23. 



Medicago, 42. 



Medick, 42. 



Melanthacese, 8. 



Melilotus, 42. 



Mentha, 70. 



Mentzelia, 50. 



Merlolix, 54. 



Mertensia, 67. 



Milk Vetch, 43. 



Milkweed, 62. 



Milkweed Family, 62. 



Mimulus, 76. 



Mint, 70. 



Mint Family, 69. 



Monarda, 70. 



Monkey-flower, 76. 



Monkshood, 34. 



Moraoeae, 17. 



Morning-glory, 63. 



Morning-glory Family, 6 



Mountain Mustard, 39. 

 Mountain Parsley, 56. 

 Mulberry Family, 17. 

 Mullein, 74. 

 Musineon, 55. 

 Mustard Family, 28. 



Nightshade, 72. 

 Nightshade Family, 71. 

 Nine-bark, 35. 

 Nuttall's Buttercup, 26. 

 Nyctaginacese, 20. 

 Nyctelea, 66. 



Oak, 16. 



Oleaster Family, 52. 

 Onagra, 53. 

 Onagraceae, 53. 

 Onion, 10. 

 Opulaster, 35. 

 Opuntia, 51. 

 Orchidaceae, 12. 

 Orchis Family, 12. 

 Oreocarya, 67. 



Orpine Family, 32. 

 Orthocarpus, 77. 

 OxalidacesB, 47. 

 Oxalis, 47. 

 Oxygraphis, 26. 



Pachylophus, 64. 

 Papaveracese, 37. 

 Papilionaceee, 40. 

 Parnassia, 33. 

 Parsnip, 57. 

 Parthenocissus, 48. 

 Pasque Flower, 3B. 

 Pea, 45. 

 Pedicularis, 77. 

 Penny Cress, 39. 

 Pennyroyal, 70. 

 Pentstemon, 75. 

 Pepper-^grass, 39. 

 Petalostemon, 42. 

 Petasites, 86. 

 Phacelia, 66. 

 Phellopterus, 56. 

 Phlox, 63. 

 Physalis, 72. 

 Physaria, 30. 

 Physostegia, 71. 

 Picea, 6. 



Pinacese, 5. 



Pine, 5. 



Pine Family, 5. 



Pink Family, 21. 



Pinus, 5. 



Pipsissewa, 57. 



Plantaginace*, 78. 



Plantago, 78. 



Plantain, 78. 



Plantain Family, 78. 



Plum, 40. 



Plum Family, 40. 



Polanisia, 31. 



Polemoniacese, 63. 



Polemonium, 65. 



Polemonium Family, 63. 



Polygonacese, 18. 



Polygonum, 19. 

 Pomaceae, 39. 

 Poppy Family, 37. 

 Populus, 15. 

 Portulaoa, 30. 

 Portulacaceae, 30. 

 Potentilla, 37. 



