`foliolate' is combined with the prefix `bi' to form the word `bifoliolate'.    From Wordnet, Princeton University. 

Hence it becomes possible to discern the most promising individuals in early youth, and this conclusion leads to a very easy and reliable method of selection, which may be expressed simply as follows: the seedlings which commence earliest with the production of four - and five-foliolate leaves are the best and should be selected for the continuance of the race.    From Wordnik.com.  [Species and Varieties, Their Origin by Mutation] Reference

foliolate Bearing leaflets (e.g. trifoliolate = bearing.    From Wordnik.com.  [Chapter 9] Reference