периплазмодий(a multinucleate mass of protoplasm in various anthers that surrounds the sporocytes and pollen grains and is formed by fusion of tapetal cells following breakdown of their walls)
перигоний(1. botany: any organ inclosing the essential organs of a flower; a perianth; 2. zoology: a sac which surrounds the generative bodies in the gonophore of a hydroid)