Definitions

1. noun

The part of a flower, especially a grass or sedge, that bears the scales or bracts enclosing the flower, often resembling a leafy bract or an involucre.

“The perigonium of the flower had a distinctive leafy shape, attracting pollinators to the bloom.”

2. noun

A bract or scale-like structure on a grass or sedge flower, often resembling a leaf or a sheath.

“The perigonium of the sedge plant was difficult to distinguish from the true leaves.”