The botany of the Antarctic voyage of H.M. discovery ships Erebus and Terror in the Years 1839-1843. London, Reeve Brothers, 1844-1860, Walter Hood Fitch, williamarcher, pterostylis cucullata, pterostylis dubia, pterostylis bryophila, pterostylis obtusa, The illustration showcases detailed botanical studies of three orchid species, each meticulously labeled. The first species, P. cucullata, is depicted with its characteristic cup-shaped flowers and distinct stem structure. The second, P. dubia, features unique floral arrangements and leaf designs, emphasizing its reproductive features. The final species, P. debilis, highlights its slender profile and elongated petals. Above each plant, parts of the flowers are shown in a close-up view, offering insight into their intricate structures. Overall, the illustration emphasizes the beauty and complexity of these orchid varieties, with careful attention to detail in both the shapes and textures of the plants.