British sea-weeds, London, Bell and Daldy, 1872, algae, Great Britain, marine algae, This illustration showcases a collection of marine algae, featuring four distinct species. The first species, labeled 191, is Sphacelococus coronopifolius, characterized by its branching, delicate fronds. The second, Gelidium cartilaginaceum, noted for its gelatinous texture and intricate structure, is displayed alongside its detailed features. The third specimen, Gracilaria compressa, appears with elongated branches that are somewhat flattened, indicative of its adaptability. Lastly, the fourth species, Gigartina mamillosa, presents a bushy appearance with small, rounded projections. Each organism is vividly rendered, highlighting their unique forms and textures, making this illustration a valuable reference