peristome

• Substantivo que designa a franja de dentes ou apêndices que circunda a abertura da cápsula dos musgos, ou a região ao redor da boca em diversos invertebrados.

A noun referring to a fringe of toothlike appendages surrounding the mouth of a moss capsule, or the region around the mouth in various invertebrates.

1. Botanical structureC2formalscientific

   A fringe of tooth-like appendages that surrounds the opening of a moss capsule, aiding in spore dispersal.

   Peristoma

   • The peristome of the moss capsule opens when conditions are dry.
   • Botanists study the peristome to classify different moss species.
   • The teeth of the peristome move in response to humidity changes.

2. Zoological structureC2formalscientific

   The area or structures surrounding the mouth in various invertebrates, such as echinoderms or insects.

   Peristoma

   • The sea urchin's peristome contains its feeding apparatus.
   • In some insects, the peristome is modified for specialized feeding.
   • The peristome of the starfish is located on its underside.