46 MONTANA EXPERIMENT STATION 



Prunus triloba Flowering Plum 28 



Rhus typhana var. laciniata. . . Staghorn Sumac 30 



Robina Pseudoaccacia Black Locust 31 



Rosa Carolina Swamp Rose 31 



Rubus artfutus Common Blackberry 32 



Rubus occidenlalis . Common Black Raspberry. . 32 



Rubus strisjosux Cultivated Red Raspberry . . 32 



Rubus villosus Northern Dewberry 32 



Spiraea Thunbergii Spiraea 35 



Spiraea Van Houttei. . . Spiraea . 35 



Ulwius Americana White Elm 37 



Viburnum dentatum Arrow Wood 37 



Viburnum Opulus var. sterile. .Snowball 38 



