Rho·do·sperm n. Bot. Any seaweed with red spores.
Note: ☞ As the name of a subclass, Rhodosperms, or Rhodospermeae, is synonymous with Florideae (which see.)
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Flo·rid·e·æ prop. n. pl. Bot. A subclass of algæ including all the red or purplish seaweeds; the Rhodospermeæ of many authors; -- so called from the rosy or florid color of most of the species.
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