| # A Popular History of British Sea-Weeds by ## Rev. D. Landsborough, A.L.S. 1849

| ## Fructification of Sea-Weeds I |

Fig. A. | Polysiphonia urceolata Fig. 1. Portion of a branch. Fig. 2. Capsule moe highly magnified.
Fig. B. | Polysiphonia urceolata Fig. 1. Portion of a branchlet, showing granular fruit (tetraspores). Fig. 2. Tetraspor, highly magnified.
Fig. C. | Ptilota plumosa Fig. 1. Involucre containing favellae. Fig. 2. Lacinia with tetraspores on short pedicels.
Fig. D. | Plocamium coccineum Fig. 1. Branchlet with a lateral tubercle containg spores. Fig. 2. Branchlet with stichidia containing tetraspores.

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