124 Brassicaceae 



sharply dentate or rarely entire, the upper 

 smaller, narrower, often acute. Flowers 

 white or pink J of an inch or more broad, 

 pedicels erect, J of an inch long in fruit; 

 pods nearly terete, narrowly linear, J-f 

 of an inch long, valves finely nerved. 



In moist gravelly or stony ground through- 

 out the Rockies at the lower altitudes, 

 flowering in June. 



Aquatic, smooth, branched, float- 

 Ronps. 



Nasturtium in g or creeping, rooting from 

 (L.) Rusby. the joints. Leaves odd pinnate 

 Water-cress. o f 3 _ 9 segments, the terminal 

 one larger than the lateral, all obtuse, 

 ovate or oval or the terminal one near- 

 ly orbicular Racemes elongated in fruit; 

 flowers white, J of an inch or more broad ; pod 

 J-iJ inches long, spreading and slightly 

 curved upwards, on pedicels of about their 

 length. 



In ditches and shallow pools through 

 the Rockies, especially abundant at 

 Banff in the warm water at the outlet 



