O que (quem) é Peristome - definição
Nectar roll
![Peristome of ''[[Bryum capillare]]''](https://commons.wikimedia.org/wiki/Special:FilePath/Bryum capillare peristome.jpg?width=200 "Peristome of ''[[Bryum capillare]]''")
![The ventral surface of a shell of ''[[Cepaea nemoralis]]''. The peristome is thickened and dark in an adult snail.](https://commons.wikimedia.org/wiki/Special:FilePath/Cepaea nemoralis unten.jpeg?width=200 "The ventral surface of a shell of ''[[Cepaea nemoralis]]''. The peristome is thickened and dark in an adult snail.")
![Arthrodontous capsule of the [[moss]] ''Dicranella varia''](https://commons.wikimedia.org/wiki/Special:FilePath/Dicranella varia sporogon.jpeg?width=200 "Arthrodontous capsule of the [[moss]] ''Dicranella varia''")
![The earthstar ''[[Geastrum pectinatum]]'' showing a beaked peristome](https://commons.wikimedia.org/wiki/Special:FilePath/Geastrum pectinatum 135825.jpg?width=200 "The earthstar ''[[Geastrum pectinatum]]'' showing a beaked peristome")
![Diagram showing the location of the peristome on a ''[[Sarracenia]]'' ([[North America]]n [[pitcher plant]])](https://commons.wikimedia.org/wiki/Special:FilePath/Sarracenia pitcher anatomy basic.jpg?width=200 "Diagram showing the location of the peristome on a ''[[Sarracenia]]'' ([[North America]]n [[pitcher plant]])")
peristome
['p?r?st??m]
¦ noun
1. Zoology the parts surrounding the mouth of various invertebrates.
2. Botany a fringe of small projections around the mouth of a capsule in mosses and certain fungi.
Origin
C18: from mod. L. peristoma, from Gk peri- 'around' + stoma 'mouth'.
Peristome
·noun The lip, or edge of the aperture, of a spiral shell.
II. Peristome ·noun The membrane surrounding the mouth of an invertebrate animal.
III. Peristome ·noun The fringe of teeth around the orifice of the capsule of mosses. It consists of 4, 8, 16, 32, or 64 teeth, and may be either single or double.
Peristome
Peristome (from the Greek peri, meaning 'around' or 'about', and stoma, 'mouth') is an anatomical feature that surrounds an opening to an organ or structure. Some plants, fungi, and shelled gastropods have peristomes.
Wikipédia
Peristome
Peristome (from the Greek peri, meaning 'around' or 'about', and stoma, 'mouth') is an anatomical feature that surrounds an opening to an organ or structure. Some plants, fungi, and shelled gastropods have peristomes.
