Abstract
THE phenomenon to which Mr. Bennett alludes is, I presume, well known; but it is not universal, though common. He will find illustrations in Hassal's “British Freshwater Algæ,” where the zygospores are formed in both filaments simultaneously; e.g., plate 19, Zygnema (Spirogyra); plate 38, several species of Tyndaridea. But in those genera in which the Zygospore is formed between the filaments it would seem impossible to decide which is male and which is female, e.g., plate 39, Tyndaridea conspicua, immersa, Ralfsii, and decussata; or in the genera Mesocarpus, plates 42-47, and Stenocarpus plates 47-49.
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HENSLOW, G. Reproduction by Conjugation. Nature 16, 397 (1877). https://doi.org/10.1038/016397b0
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DOI: https://doi.org/10.1038/016397b0
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