The botany of the Antarctic voyage of H.M. discovery ships Erebus and Terror in the Years 1839-1843. London, Reeve Brothers, 1844-1860, William Henry Harvey, Artist, Wrangelia Setigera, Spyridia Tasmanica, Wrangelia Mucronata, Wollastoniella Mucronata, This detailed illustration features two distinct species of marine algae from the genus Wrangelia. On the left side, labeled 'A,' various forms of Wrangelia soligera are depicted, showcasing its intricate branched structures and reproductive features, including delicate fronds and clusters that hint at its complexity. On the right side, labeled 'B,' Wrangelia mucronata is illustrated, highlighting its elongated and feathery appearance, as well as its distinctive branching patterns and reproductive components. The overall presentation emphasizes the fine details and natural forms of these organisms, contributing to the study of marine botany.