There are many little inlets along this part of the river, where water flows in and is cut off from the current, forming gigantic, motionless puddles.
The path wound between trees.
And sometimes under them.
The lower portions of this mound of foliage contained mostly California grape (Vitis californica) and poison oak (Toxicodendron diversilobum). This unfortunate combination meant that it would be a very bad idea to try to eat any of the grapes. Not that there were any grapes ripe yet anyway, in April.
There were a few wild carrots (Daucus pusillus) and sedges mixed in with the grapes as well.
Applying mugwort leaves (Artemisia douglasii) to skin is rumored to help prevent poison oak from causing a rash. I don't think there's any scientific evidence to support that idea, though.
Many cottonwood trees (Populus fremontii) had recently dropped large, cotton-covered branches during winter storms.
Some of the trees had huge growths on the bark.
This vine is called manroot or wild cucumber.
These are the flowers of a blue elderberry (Sambucus mexicana). I have a tiny blue elderberry in our back yard.
The most dominant groundcover was American vetch (Vicia americana).
All the purple flowers all over the place are American vetch.
The vetch is native. However, the white flowers mixed in here and there are wild radish (Raphanus raphanistrum), which is an invasive alien.
There was a patch of invasive periwinkle (Vinca major) taking over some of the area as well.