a. [f. as prec. + -OSE.] = FILAMENTOUS.
1848. in Craig.
1854. Woodward, Mollusca, II. 194. Gills filamentose, arranged along the sides of the back, on the wavy margins of the mantle.
1874. M. Cooke, Fungi (1875), i. 15. Nylander writes, The anatomical filamentose elements of lichens are distinguished by various characters from the hyphæ of fungi.