परिस्तोम इसके अंग्रेजी अर्थ का उदाहरण

The capsules lack the peristome mechanism and dehisce longitudinally to release the spores, resulting in a paper-lantern appearance.

The opening thus revealed is called the stoma (meaning "mouth") and is surrounded by one or two peristomes.

A peristome is a ring of triangular "teeth" formed from the remnants of specially thickened cell walls.

There are usually 16 such teeth in a single peristome, and in the Bryopsida the teeth are separate from each other and able to both fold in to cover the stoma as well as fold back to open the stoma.

There are two basic arthrodontous peristome types.

The first type is termed haplolepidous and consists of a single circle of 16 peristome teeth.

This type of peristome is characteristic of subclass Dicranidae.

The second type is the diplolepidous peristome found in subclasses Bryidae, Funariidae, and Timmiidae.

In this type, there are two rings of peristome teeth—an inner endostome (short for endoperistome) and an exostome.

There are a few mosses in the Bryopsida that have no peristome in their capsules.