they therefore cross established taxonomic lines.a . californica is the predominant early season milkweed in california and may be important in providing chemical protection to the spring generation of monarchs in the western united states.a . speciosa , a. eriocarpa , anda . californica each imparts distinctive cardenolide fingerprints to the butterflies , so that ecological predictions are amenable to testing .
C0006754
california
C0041703
united states