a. Bot. [f. prec. + -ACEOUS.] Of the nature of or allied to the genus Conferva; belonging to the Nat. Ord. Confervaceæ, which some algologists have constituted for that genus and its allies.
1853. Phillips, Rivers Yorksh., iv. 125. Siliceous parts of confervaceous plants.
1861. H. Macmillan, Footn. Page Nat., 164. The most singular of the confervaceous algæ.
