Crenate

crenate \ˈkrē-ˌnāt\ or crenated \ˈkrē-ˌnā-təd\ adjective: having the margin or surface cut into rounded scallops {a crenate leaf}

Etymology: New Latin crenatus, from Medieval Latin crena notch

Here’s another case where a word can have two adjectival forms — one a past participle of the verb form, and one that looks exactly like the verb form. Yesterday’s entry had two such words (the entry word itself, crenulate, and a descriptor in the definition, serrate).