where is it found?
In California
Postelsia
California 
what is postelsia? The sea palm from where does it get its name? From geologist Alexander Philipov Postels and artist who worked with Ruprecht, while the specific name, "palmaeformis", describes the alga's superficial similarity in appearance to true palms.
wiki:15430615
Postelsia [SEP] History
The sea palm was known by the natives of California by the name of kakgunu-chale before any Europeans entered the region. "Postelsia" was first scientifically described by Franz Josef Ruprecht (1814–1870) in 1852 from a specimen found near Bodega Bay in California. Ruprecht, an Austro-Hungarian who became curator of botany at the Academy of Sciences in St. Petersburg in 1839, studied seaweed specimens collected by botanist Ilya Vosnesensky, and published a paper describing one seagrass and five seaweeds, one of which was "Postelsia". The sea palm has been used by several textbooks, such as the Campbell–Reece Biology textbook, as an example of multicellular protists, as well as an example of the class Phaeophyceae.