Field of Yerba Mansa
Despite its scientific name (Anemopsis californica), yerba mansa is native to the American southwest, primarily in New Mexico. It now grows well in wet, marshy areas like the Delta. Though there is no documentation of it having a sedative effect, it is sold as a tincture similar to echinacea by some herbal remedy companies.
Don't be fooled: the large white petals aren't part of the yerba mansa flower, but rather its inflorescence, a flower-like structure that's really a collection of small flowers. The true buds are made of the tiny white petals that make a small tower of flowers in the center.
Also known as seaside heliotrope or quail plant, salt heliotrope likes briny soils, which makes it a good candidate for this area where two rivers meet the sea.
Tiny purple and yellow flowers bloom in rows on the salt heliotrope, and the plant sports thick, spade-shaped leaves.
The marsh monkey flower, also known as seep monkey flower (Mimulus guttatus) is one of many monkey flowers found in California. This species in distinguished by its love of wetlands. Without adequate water, the flowers dry up and disappear.
A close up of the marsh monkeyflower (Mimulus guttatus) reveals its characteristic red freckles along the outer sides of its yellow petals.
This invasive species is referred to as a pest by many wildlife biologists, and its prockly flowers only add to its lack of desirability. Starthisle often takes root after soil has been disturbed, and then grows quickly, blocking out chances for other species to regain a foothold.
When you see this weedy-looking plant with its forked leaves, steer clear to avoid scraping your legs on its spikes.