The Collaborative International Dictionary
Plantal
Plantal \Plant"al\, a. [L. planta a plant.]
Belonging to plants; as, plantal life. [Obs.]
--Dr. H. More.
Wiktionary
plantal
a. 1 (context obsolete English) Belonging to plants. 2 (context obsolete English) Of the nature of implanting or uniting.
WordNet
plantal
adj. of or relating to plants