1) Membranous 
thin and semi-transluscent
• (a.) Same as Membranous. • (a.) Thin and rather soft or pliable, as the leaves of the rose, peach tree, and aspen poplar.
Mem`bra·na'ceous adjective [ Latin membranaceus .] 1. Same as Membranous . Arbuthnot. 2. (Botany) Thin and rather soft or pliable, as the leaves of the rose, peach tree, and aspen poplar. 
Type: Term Pronunciation: mem′bră-nā′shŭs Synonyms: membranous
thin and semi-transluscent