偶数 ぐうすう羽状 うじょう複葉 ふくようであれば
gūsūujō fuku yōdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 偶数羽状複葉

1. If it were an even-pinnate compound leaf.; If it is an even-pinnate compound leaf.

Ba Conditional
Botany