Your red berried thing:
http://www.discoverlife.org/20/q?sea...icera+morrowii
or
http://www.invasive.org/species/subject.cfm?sub=3040
Hard to tell without seeing the flower or knowing if the berries are on stems. More likely the second one. Was it growing in deep shade? That would explain the small number of berries. I didn't look up whether or not you could eat it.
I'm a little concerned about your reliance on a single source book and your determination to eat things. That purple flower for instance, just because you couldn't find any other purple flower in your book other than Iris, doesn't mean it is the plant you think it is. It looks more like some form of Lily and not at all like this CA plant called Brodiaea.
http://www.laspilitas.com/nature-of-...iaea-pulchella
And the Stinging Nettle, you can eat that. But you have to harvest it young (wear gloves) and boil it to deactivate the stinging hairs before you do.
I'm not sure whereabouts in CA you are, but there are tons of exotic tropical escapees that will not be in a native flora book. You might want to see if you can find a local plantsman who could help you out. Or an agricultural extension service as YCC mentioned. Or others that wild forage in your area who know what is safe.