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| Spore capsule |  | - Large (72 Kb)
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1 spore capsule
3 operculum
4 calyptra
2 peristome
| | English name: Undulate atrichum moss
Scientific name: Atrichum undulata
Familia: Polytrichaceae
Classis: Bryopsida (= Musci)
Phylum: Bryophyta
Regnum: Plantae
| | The spores in the spore capsule of a moss are haploid. As a result of desiccation of the peristome the capsule shears and the operculum opens, allowing the spores to spread around. The calyptra is a remnant of the (haploid) gametophyt |
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