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Sisymbrium altissimum L.

3 photos.
The "tall mustard" or "tumble mustard", another weedy species introduced into the western hemisphere
from Europe.

 

 

 

 

 

 

 


1.  Late June.  Entire plant growing on
streambed material which was pushed
up for a dam.


2.  Upper section of plant.

3.  Terminal cluster of flowers with
developing seed pods.
All photos taken on Upper Half Dollar Creek
65°  25.51' N,   144°  46.67' W
Elev. 2000 ft.