hastate
adjective
has·tate ˈha-ˌstāt 
1
: triangular with sharp basal lobes spreading away from the base of the petiole
hastate leaves
see leaf illustration 2
: shaped like a spear or the head of a spear
a hastate spot of a bird
Word History
Etymology
New Latin hastatus, from Latin hasta spear — more at yard
First Known Use
1788, in the meaning defined at sense 1