- Bryum pseudotriquetrum var. pseudotriquetrum
- Bryum pseudotriquetrum var. bimum
David Holyoak’s book contains keys, detailed morphological, ecological and taxonomic descriptions and diagrams showing key features – and is highly recommended for anyone wishing to get to know Bryum species.
The Bryophyte identification page under Resources contains additional information on the genus Bryum, including an early version of the keys now published in David Holyoak’s book.Bryophyte identification resources