Common Extinguisher-moss

<em>Encalypta vulgaris</em>, the common extinguisher moss, is a acrocarpous moss in the family Encalyptaceae, classified as Vulnerable by the IUCN Red List, indicating a concerning decline in populations across parts of its European range. The species is documented in Belgium, Denmark, Luxembourg, Norway, and Portugal, where it is native to European calcareous habitats. <em>Encalypta vulgaris</em> typically grows on dry to moist calcareous rocks, soil banks, old walls, and disturbed ground with base-rich substrates, often in open or semi-shaded microhabitats. The common name refers to the distinctive elongated calyptra, a cap-like structure that covers the developing sporophyte and resembles an old-fashioned candle snuffer or extinguisher. The calyptra is persistent and fringed at its base, a diagnostic feature of the genus <em>Encalypta</em>. This moss is sensitive to nitrogen pollution and habitat disturbance, and its Vulnerable status reflects the loss and degradation of calcareous grasslands and rock habitats across Europe due to agricultural intensification, urban development, and changing land management. It plays a role in soil stabilization and moisture retention in the rocky and disturbed habitats it colonizes. Conservation of calcareous habitats is essential for maintaining populations of this and many other specialist plant and lichen species. Biological traits of this species remain poorly documented in the scientific literature.