Datura wrightii
Solanaceae
At last, I found a native jimson weed. Perhaps the reason why I haven't noticed this before is because it blooms in the evening through to the next morning. Unless I'm camping, I usually don't hike in the evenings. Descriptions of its scent range from "sweetly fragrant" flowers to "rank smelling" foliage. Like it's non-native cousin D. stramonium that I've seen at Fort Ord, extracts are narcotic. Native Americans used preparations in ceremonies.