Sargassum pallidum

''Sargassum pallidum'' is a species of seaweed native to East Asia and Southeast Asia. It belongs to the subgenus ''Bactrophycus'', section ''Teretia'' of the genus ''Sargassum''. Along with ''Sargassum fusiforme'', ''S. pallidum'' is often dried and processed into a traditional Chinese medicine known as ''Hai Zao'' or ''Herba Sargassi''.