Abstract
Preliminary analysis of the lipids of the sperm masses of 3 mosses was accomplished by TLC. The components in Mnium affine Bland. differ from those in Atrichum undulatum Hedw. P.-Beauv. and Polytrichum attenuatum Mentz., which resemble each other. This situation corresponds to a difference in the physical cindition of the extruded sperm masses (coherent in Mnium, dispersed in Atrichum and Polytrichum).

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