Word Study
rhodosperm
CIDE DICTIONARY
rhodosperm, n. [Gr. "ro`don the rose + spe`rma a seed.].
Any seaweed with red spores. [1913 Webster]
" As the name of a subclass, Rhodosperms, or Rhodospermeæ , is synonymous with Florideæ (which see.)" [1913 Webster]
For further exploring for "rhodosperm" in Webster Dictionary Online