I saw a little creek on the side of High Way 84 in Livermore, and stopped to check for any aquatic plants. These are what I found.
Plant 1:
Plant 2:
Plant 3:
Plant 4:
Plant 5: (I'm hoping it's Lobelia cardinalis)
Most of these plants were growing emersed with roots/bottoms in the water.
Can someone also take a guess at the left most middle plant in that picture?
Thanks,