This is a vintage botanical illustration, likely an engraving or sketch, depicting a type of algae or aquatic plant. The image is rendered in black ink on a cream-colored, aged paper. The main subject is a long, curving stem that appears to be rooted in water. The stem is thick at the base and gradually tapers as it extends upwards. From the stem, several layers of filamentous, hair-like structures extend outwards, resembling a mass of tangled algae or seaweed. These structures are densely packed and create a cloud-like appearance. There are several numbered labels pointing to different parts of the plant, indicating a scientific or educational purpose. The labels are small and handwritten, adding to the vintage aesthetic. The top of the image features the text "Conferva" and "TAB. II", while the text "Fig. 1" is located below. The overall style is detailed and precise, characteristic of botanical illustrations from the 18th or 19th century.