cryptogamic

From cryptogam +‎ -ic.

cryptogamic (not comparable)

1. Of or pertaining to the cryptogams.

   Synonym: cryptogamous

   • 1826, James L[awson] Drummond, “Of the Root (Radix)”, in First Steps to Botany, Intended as Popular Illustrations of the Science, Leading to Its Study as a Branch of General Education, 2nd edition, London: Printed for Longman, Rees, Orme, Brown, and Green, […], →OCLC, page 31:

     A number of cryptogamic plants swim about at random in the waters, among which the most interesting, perhaps, in our present state of knowledge, is the sargasso, or gulf-weed of voyagers (Fucus natans), which is found in the Gulph of Florida, and some other parts of the ocean floating in masses or fields, many miles in length.