What are the best answers for “of or pertaining to the series cryptogamia, or to plants of that series.”?

cryptogamian, cryptogamic, cryptogamous.

How many letters does the top answer for “of or pertaining to the series cryptogamia, or to plants of that series.” have?

The most common answer is cryptogamian (12 letters).

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

cryptogamian 12 letters web-def

Of or pertaining to the series Cryptogamia, or to plants of that series.

cryptogamic 11 letters web-def

of or relating to a cryptogam

cryptogamous 12 letters web-def

of or relating to a cryptogam