runcinate

adjective

run·​ci·​nate ˈrən(t)-sə-ˌnāt 

: pinnately cut with the lobes pointing downward

runcinate leaves of the dandelion

see leaf illustration

Word History

Etymology

Latin runcinatus, past participle of runcinare to plane off, from runcina plane

First Known Use

1776, in the meaning defined above