Sarmentypnum exannulatum
| Sarmentypnum exannulatum | |
|---|---|
| Sarmentypnum exannulatum in Salzburg, Austria. | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Bryophyta |
| Class: | Bryopsida |
| Subclass: | Bryidae |
| Order: | Hypnales |
| Family: | Calliergonaceae |
| Genus: | Sarmentypnum |
| Species: | S. exannulatum |
| Binomial name | |
| Sarmentypnum exannulatum (Schimp.) Hedenäs | |
| Synonyms | |
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Sarmentypnum exannulatum, also known as ringless hook-moss, is a species of medium-sized wetland moss belonging to the family Amblystegiaceae. It was first described by Wilhelm Philipp Schimper in collaboration with his brother Wilhelm Philippe Schimper in 1854.