tripinnate - a compound leaf with leaflets attached to secondary rachillae that are in turn attached to rachillae, which are borne on the rachis (Hickey 1999).
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith