. British fresh-water algae, exclusive of Desmidieae and Diatomaceae. Algae -- Great Britain. ZYGNEMACE/E PL. 1. Spiroer^ra quadrata. Hass. 2. "a, We- .->J,tz. 8. Spirog-yra tenuisairna. 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 Cooke, M. C. (Mordecai Cubitt), b. 1825. London, New York, Williams and Norgate

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Keywords: ., bookauthorcookemcmordecaicubitt, bookcentury1800, bookdecade1880