HARDY HERBACEOUS PLANTS. 155 



Arrow Head (Sagitfaria variabilis). — Aquatic, with 

 pretty leaves. 



Pitcher-Plant, Side-Saddle Flower {Sarracenia pur- 

 purea). — Purple ; 1 foot. There are several other in- 

 teresting species of Sarracenia. 



Pig. 12. — ABBOW HEAD {Sagittaria vandbUis), 



Globe Flower, American {Trollius laxiis). — Greenish- 

 yellow; May; 1 foot. 



Cat-tail, or Reed Mace {Typha latifolia). — Brown; 

 summer; 3 to 5 feet. 



Cat-tail, Narrow-leaved {T. angustifolia). — More 

 slender and smaller. 

 Pickerel Weed {Pontederia caudata). — Blue ; July ; a 

 fine water-plant. 



