California blackberry (Rubus ursinus) is well-known as a delicious and abundant fruit. The Indians ate it straight off the vine and sometimes dried it for the winter.
But did you know an infusion of its roots are effective at stopping diarrhea? The Little Lake Indians of Mendocino County were known to use its roots in this manner. Diarrhea can quickly kill one via dehydration, so in any survival situation, this would be a great herbal medicine to remember!