10 CONTENTS. 



Plants poisonous to stock in Montana, or so reputed — Continued. Page. 

 Most important poisonous species — -Continued. 



Tall larkspur {Delphmium glaucum S. Wats.) — Continued. 



Experiments 67 



Symptoms 71 



Remedial and preventive measures 72 



Summary 73 



Purple larkspur {Delphiniuin bicolur Nutt. ) 73 



Description, habitat, and distribution 73 



History as a poisonous plant 74 



Experiments 76 



Symptoms of poisoning 79 



Remedial and preventive measures 80 



Summary 80 



Wyoming water hemlock ( Olcata uccidentuUti Greene) 80 



Description, habitat, and distribution 80 



History as a poisonous plant 81 



Experiments 82 



Symptoms of poisoning 84 



Remedial and preventive measures 85 



Summary 86 



White loco weed {Aragallus spicaias (Hook. ) Rydberg) 86 



Description, habitat, and distribution : 86 



History as a poisonous plant 87 



■ Experiments 90 



Symptoms of poisoning 93 



Remedial and preventive measures 97 



Summary 99 



Other loco weeds {Aragallus spp.) 99 



Lupines {Lupinus spp. ) 100 



Description, habitat, and distribution 100 



^ History as poisonous plants 101 



Experiment 108 



Symptoms of poisoning 109 



Remedial and preventive measures 109 



Summary 110 



Poisonous species of less importance Ill 



Ergot ( Ckwiceps purpurea { Fr. ) Tul. j Ill 



Cow cockle ( Vaccaria vaccaria (L. ) Britton. ) 113 



Swamp camas ( Zygadenus elegans Pursh ) 117 



Showy milkweed {Asdepias speciosa Torr. ) ^ 118 



California swamp hellebore ( Veratrum califurn'icam Durand) 119 



Aconite {Aconitum columbianum Nutt. ) 121 



Psoralea ( Psoralea tenuiflora Pursh) '. 122 



Tall coneflower ( Rudbeckia laciniata L. ) 123 



Henbane ( Jlyoscyamus niger Ij. ) 124 



Black nightshade {Solarium nigrum L. ) 124 



Potato {Solarium tuberomm L. ) 124 



Spreading nightshade {Solanuni (rijlorum Nutt.) 125 



Plants suspected of being poisonous 125 



Prairie fennels {Lomatium and Maaineon spp. ) - 125 



False lupine ( Therviopsis spp. ) 127 



Synthyris {Synthyris rubra Benth. ) 129 



