. An introduction to the study of seaweeds. Algae. PH^OPHYCE^ 67 a protoplasmic layer which is connected by fine threads with the layer lining the wall. The chro- matophores vary slightly in shape, being flat discs usually round but frequently elongated. Tlu Ecproductive Organs.—The larger unilocular bodies which occur in all three genera contain but one oosphere each, unprovided with cilia, and having in the. Fig. 10.—a, Scaphospora speeiosa, with antlieridia and presumptive oogonia. &, Ilaplospora globosa, with presumptive oogonia; highly magnified. case of Scaphospora one nucleus, Haplo
. An introduction to the study of seaweeds. Algae. PH^OPHYCE^ 67 a protoplasmic layer which is connected by fine threads with the layer lining the wall. The chro- matophores vary slightly in shape, being flat discs usually round but frequently elongated. Tlu Ecproductive Organs.—The larger unilocular bodies which occur in all three genera contain but one oosphere each, unprovided with cilia, and having in the. Fig. 10.—a, Scaphospora speeiosa, with antlieridia and presumptive oogonia. &, Ilaplospora globosa, with presumptive oogonia; highly magnified. case of Scaphospora one nucleus, Haplospora four, and Tilopteris two or more. In Tilopteris and Haplosporn it is clothed with a membrane before emission, but in Scaphospora the wall is not secreted until after it is set free. In Tilop)teris these bodies are intercalary in the filaments, and occur in pairs or in fours; in Haplospora, they are shortly stalked ; and in Scapho- spora they are partly immersed in the branches, one of the cells of which acts as a basal cell. If we F 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Murray, George Robert Milne, 1858-1911. London, New York, Macmillan
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