Letter | Published:

Hydrodictyon in the Eastern Counties


IT may interest some of your readers to know that Hydrodictyon utriculatum (Roth), reckoned by Dillwyn among the rarest of the fresh-water Algæ, and now generally described as confined to the ditches and pools of the Midland and Southern Counties of England (W. J. Hooker, 1833; Harvey, 1841; Hassall, 1845; and Griffith's “Micrographical Dictionary,” 1883), can again be claimed as an inhabitant of the Eastern Counties. A few days ago I found a fine and well-grown specimen in the river just above the well known sluice at Denver.

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